Edgar Filing: BLACKROCK CORE BOND TRUST

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-10543

Name of Fund: BlackRock Core Bond Trust (BHK)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Donald C. Burke, Chief Executive Officer, BlackRock Core Bond Trust, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 10/31/2008

Date of reporting period: 05/01/2008 – 07/31/2008

Item 1 – Schedule of Investments

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
	Asset-Backed Securities		(000)	Value
	Bank of America Credit Card Trust Series 2008-
	A9 Class A9, 4.07%, 7/16/12	$	2,485	$	2,484,752
	Chase Issuance Trust Series 2007-A17 Class A,
	5.12%, 10/15/14		2,300		2,310,695
	Chase Issuance Trust Series 2008-A9 Class A9,
	4.26%, 5/15/13		2,525		2,504,661
	Chase Manhattan Auto Owner Trust Series
	2005-B Class A4, 4.88%, 6/15/12		2,703		2,721,385
	Citibank Credit Card Issuance Trust Series
	2006-A2 Class A2, 4.85%, 2/10/11		2,825		2,847,834
	Citibank Omni Master Trust Series 2007-A9A
	Class A9, 3.558%, 12/23/13 (a)		2,720		2,736,708
	Daimler Chrysler Auto Trust Series 2006-A
	Class A3, 5%, 5/08/10		1,014		1,020,890
	Ford Credit Auto Owner Trust Series 2006-A
	Class A4, 5.07%, 12/15/10		2,850		2,893,670
	Harley-Davidson Motorcycle Trust Series 2005-
	2 Class A2, 4.07%, 2/15/12		1,610		1,617,639
	Home Equity Asset Trust Series 2007-2 Class
	2A1, 2.571%, 7/25/37 (a)		879		826,431
	JPMorgan Mortgage Acquisition Corp. Series
	2007-CH5 Class A3, 2.571%, 6/25/37 (a)		3,635		2,854,929
	MBNA Credit Card Master Note Trust Series
	2006-A1 Class A1, 4.90%, 7/15/11		2,825		2,849,624
	SLM Student Loan Trust Series 2005-5 Class
	A1, 4.10%, 1/25/18 (a)		289		288,344
	SLM Student Loan Trust Series 2008-5 Class
	A2, 3.90%, 10/25/16 (a)		3,200		3,203,936
	SLM Student Loan Trust Series 2008-5 Class
	A3, 2.80%, 1/25/18 (a)		810		827,342
	SLM Student Loan Trust Series 2008-5 Class
	A4, 4.50%, 7/25/23 (a)		2,180		2,245,160
	Small Business Administration Series 2003-
	P10B Class 1, 5.136%, 8/10/13		1,023		1,023,457
	Small Business Administration Series 2004-
	P10B Class 1, 4.754%, 8/10/14		591		574,941
	Sterling Bank Trust Series 2004-2 Class Note,
	2.081%, 3/30/30 (b)		7,262		372,187
	Sterling Coofs Trust Series 1, 2.362%, 4/15/29 (b)		9,987		745,897
	USAA Auto Owner Trust Series 2006-1 Class
	A4, 5.04%, 12/15/11		2,725		2,773,033
	Total Asset-Backed Securities - 11.5%				39,723,515

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)	Value
Aerospace & Defense - 1.1%	CHC Helicopter Corp., 7.375%, 5/01/14	$	405	$	420,694
	DRS Technologies, Inc., 6.875%, 11/01/13		70		70,350
	DRS Technologies, Inc., 7.625%, 2/01/18		80		83,200
	Hexcel Corp., 6.75%, 2/01/15		140		135,450
	Honeywell International, Inc., 5.70%, 3/15/37		975		900,229
	Northrop-Grumman Corp., 7.875%, 3/01/26		960		1,112,413
	TransDigm, Inc., 7.75%, 7/15/14		120		117,000
	United Technologies Corp., 4.875%, 5/01/15		1,125		1,121,264
					3,960,600
Air Freight & Logistics - 0.5%	Park-Ohio Industries, Inc., 8.375%, 11/15/14		120		99,000
	United Parcel Service, Inc., 6.20%, 1/15/38		1,650		1,636,683
					1,735,683
Airlines - 0.0%	American Airlines, Inc. Series 99-1, 7.324%, 4/15/11		115		106,088
Auto Components - 0.1%	Lear Corp., 8.75%, 12/01/16		360		284,400
	Metaldyne Corp., 10%, 11/01/13		250		102,500
					386,900
Automobiles - 0.2%	Ford Capital BV, 9.50%, 6/01/10		600		504,000
Building Products - 0.1%	CPG International I, Inc., 10.50%, 7/01/13		200		158,000
	Momentive Performance Materials, Inc., 11.50%,
	12/01/16		405		311,850
					469,850
Capital Markets - 3.1%	Credit Suisse Guernsey Ltd., 5.86% (a)(c)		1,550		1,260,396
	The Goldman Sachs Group, Inc., 6.75%, 10/01/37		975		861,752
	Lehman Brothers Holdings, Inc., 4.476%,
	9/15/22 (a)		525		483,411
	Lehman Brothers Holdings, Inc. Series MTN,
	7%, 9/27/27		1,250		1,104,795
	Morgan Stanley, 3.041%, 1/09/12 (a)		1,340		1,226,955
	Morgan Stanley, 6.25%, 8/28/17		1,700		1,537,444
	Morgan Stanley, 6.25%, 8/09/26		525		449,141
	Morgan Stanley Series F, 5.55%, 4/27/17		1,375		1,201,410
	UBS AG Series DPNT, 5.875%, 12/20/17 (n)		2,575		2,504,875
					10,630,179
Chemicals - 0.7%	American Pacific Corp., 9%, 2/01/15		250		241,875
	Ames True Temper, Inc., 6.791%, 1/15/12 (a)		650		516,750
	Huntsman LLC, 11.50%, 7/15/12		66		68,805
	Ineos Group Holdings Plc, 7.875%, 2/15/16 (d)	EUR	285		283,404
	Innophos, Inc., 8.875%, 8/15/14	$	885		885,000
	Key Plastics LLC, 11.75%, 3/15/13 (d)		515		180,250
	Terra Capital, Inc. Series B, 7%, 2/01/17		80		79,000
					2,255,084
Commercial Banks - 4.2%	Barclays Bank Plc, 7.434% (a)(c)(d)		1,975		1,700,125
	Credit Agricole SA, 6.637% (a)(c)(d)		250		197,375

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	DEPFA ACS Bank, 5.125%, 3/16/37 (d)	$	3,775	$	3,497,228
	HBOS Treasury Services Plc, 3.75%, 9/30/08 (d)		825		823,384
	HSBC Bank USA NA, 5.875%, 11/01/34		775		670,618
	HSBC Finance Corp., 6.50%, 5/02/36		300		273,557
	Royal Bank of Scotland Group Plc Series
	MTN, 7.64% (a)(c)(n)		2,200		1,837,704
	SunTrust Banks, Inc., 4%, 10/15/08		995		994,660
	SunTrust Bank Series CD, 4.415%, 6/15/09		1,265		1,268,832
	Wachovia Bank NA, 6.60%, 1/15/38		1,925		1,513,033
	Wells Fargo & Co., 3.12%, 8/15/08		1,031		1,030,656
	Wells Fargo & Co., 4.20%, 1/15/10		230		230,112
	Wells Fargo & Co., 4.875%, 1/12/11		435		440,392
					14,477,676
Commercial Services &	DI Finance Series B, 9.50%, 2/15/13		598		592,768
Supplies - 0.7%	FTI Consulting, Inc., 7.75%, 10/01/16		100		102,250
	Sally Holdings LLC, 10.50%, 11/15/16		281		270,463
	Waste Services, Inc., 9.50%, 4/15/14		590		592,950
	West Corp., 11%, 10/15/16		1,100		874,500
					2,432,931
Communications	Nortel Networks Ltd., 7.041%, 7/15/11 (a)		670		631,475
Equipment - 0.4%	Nortel Networks Ltd., 10.75%, 7/15/16 (d)		750		735,000
					1,366,475
Computers & Peripherals - 0.9%	International Business Machines Corp.,
	5.70%, 9/14/17 (n)		3,125		3,171,341
Consumer Finance - 0.1%	SLM Corp. Series A, 3.10%, 1/27/14 (a)		550		443,185
Containers & Packaging - 0.7%	Berry Plastic Holdings, 8.875%, 9/15/14		95		76,000
	Crown Americas LLC, 7.75%, 11/15/15		150		154,875
	Impress Holdings BV, 5.916%, 9/15/13 (a)(d)		300		265,500
	Owens-Brockway Glass Container, Inc.,
	8.25%, 5/15/13		1,500		1,537,500
	Pregis Corp., 12.375%, 10/15/13		545		523,200
					2,557,075
Diversified Financial	Bank of America Corp., 6%, 9/01/17		1,590		1,530,567
Services - 9.1%	Bank of America Corp., 5.75%, 12/01/17 (n)		2,355		2,209,689
	Bank of America Corp., Series K, 8% (a)(c)		1,360		1,254,600
	Bank of America NA, 6.10%, 6/15/17		1,975		1,895,637
	Citigroup, Inc., 3.625%, 2/09/09 (e)		3,950		3,941,504
	Citigroup, Inc., 4.25%, 7/29/09 (n)		1,020		1,020,299
	Citigroup, Inc., 4.125%, 2/22/10 (e)		4,790		4,728,894
	Citigroup, Inc., 8.30%, 12/21/77 (a)		2,225		2,031,596
	Citigroup, Inc., 6.875%, 2/15/98		525		444,550
	Ford Motor Credit Co. LLC, 5.538%, 1/13/12 (a)		125		90,627
	Ford Motor Credit Co. LLC, 7.80%, 6/01/12		340		255,355
	General Electric Capital Corp., 6.15%, 8/07/37 (n)		6,855		6,475,493
	General Electric Capital Corp., 5.875%, 1/14/38		1,525		1,369,497

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	JPMorgan Chase & Co., 6%, 1/15/18	$	125	$	121,280
	JPMorgan Chase Capital XXV, 6.80%, 10/01/37 (n)		2,780		2,348,939
	Structured Asset Repackaged Trust, 3.761%,
	1/21/10		1,749		1,722,940
					31,441,467
Diversified Telecommunication	AT&T, Inc., 6.45%, 6/15/34		780		737,309
Services - 5.9%	AT&T, Inc., 6.50%, 9/01/37 (n)		2,875		2,764,014
	AT&T, Inc., 6.30%, 1/15/38		600		564,470
	BellSouth Telecommunications, Inc., 6.03%,
	12/15/95 (f)		1,700		824,527
	Cincinnati Bell, Inc., 7.25%, 7/15/13		210		202,650
	Comcast Cable Holdings LLC, 7.875%, 8/01/13		10		10,767
	Deutsche Telekom International Finance BV,
	5.75%, 3/23/16 (n)		3,000		2,909,598
	Qwest Communications International, Inc.,
	7.50%, 2/15/14		180		166,050
	Qwest Corp., 6.026%, 6/15/13 (a)		470		435,925
	Telecom Italia Capital SA, 4.95%, 9/30/14		1,075		984,813
	Telecom Italia Capital SA, 6%, 9/30/34		1,550		1,276,510
	Telefonica Emisiones SAU, 7.045%, 6/20/36		1,975		1,996,291
	Telefonica Europe BV, 7.75%, 9/15/10		725		763,083
	Verizon Communications, Inc., 6.40%, 2/15/38		2,125		1,982,653
	Verizon Global Funding Corp., 7.75%, 12/01/30		70		72,755
	Verizon Maryland, Inc. Series B, 5.125%, 6/15/33		125		94,518
	Verizon New Jersey, Inc., 5.875%, 1/17/12		335		338,646
	Verizon New Jersey, Inc., 7.85%, 11/15/29		230		237,061
	Verizon Virginia, Inc. Series A, 4.625%, 3/15/13 (n)		3,150		3,017,511
	Wind Acquisition Finance SA, 10.75%, 12/01/15 (d)		350		362,250
	Windstream Corp., 8.125%, 8/01/13		500		505,000
	Windstream Corp., 8.625%, 8/01/16		230		232,875
					20,479,276
Electric Utilities - 4.3%	DTE Energy Co., 6.35%, 6/01/16		725		723,109
	Duke Energy Carolinas LLC, 6.10%, 6/01/37		315		293,017
	Duke Energy Carolinas LLC, 6%, 1/15/38		825		796,707
	E.ON International Finance BV, 6.65%, 4/30/38 (d)		1,525		1,479,502
	EDP Finance BV, 6%, 2/02/18 (d)		1,125		1,112,120
	Edison Mission Energy, 7.50%, 6/15/13		115		115,575
	Elwood Energy LLC, 8.159%, 7/05/26		118		114,184
	Energy East Corp., 6.75%, 7/15/36		1,500		1,418,120
	Florida Power & Light Co., 4.95%, 6/01/35		950		805,897
	Florida Power Corp., 6.40%, 6/15/38		875		880,035
	Midwest Generation LLC Series B, 8.56%, 1/02/16		75		77,574
	PacifiCorp., 6.25%, 10/15/37		575		552,175

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	Progress Energy Florida, Inc., 6.35%,
	9/15/37	$	1,325	$	1,318,615
	Public Service Co. of Colorado, 6.25%, 9/01/37		1,200		1,192,607
	Southern California Edison Co., 5.625%, 2/01/36		625		581,266
	Southern California Edison Co. Series 05-E,
	5.35%, 7/15/35		125		111,974
	Southern California Edison Co. Series 08-A,
	5.95%, 2/01/38		1,075		1,045,034
	The Toledo Edison Co., 6.15%, 5/15/37		350		299,012
	Virginia Electric and Power Co. Series A, 6%,
	5/15/37		2,000		1,856,646
					14,773,169
Electrical Equipment - 0.3%	Superior Essex Communications LLC, 9%, 4/15/12		945		963,900
Electronic Equipment &	Sanmina-SCI Corp., 8.125%, 3/01/16		1,190		1,059,100
Instruments - 0.3%
Energy Equipment &	Compagnie Generale de Geophysiques-Veritas, 7.50%,
Services - 0.6%	5/15/15		55		54,450
	Compagnie Generale de Geophysiques-Veritas, 7.75%,
	5/15/17		90		89,325
	Grant Prideco, Inc. Series B, 6.125%, 8/15/15		80		79,379
	North American Energy Partners, Inc.,
	8.75%, 12/01/11		85		85,425
	SemGroup LP, 8.75%, 11/15/15 (d)(g)		315		42,525
	Transocean, Inc., 6.80%, 3/15/38		1,100		1,131,848
	Weatherford International, Inc., 6.80%, 6/15/37		625		624,144
					2,107,096
Food & Staples Retailing - 1.4%	CVS Caremark Corp., 6.25%, 6/01/27		775		747,534
	The Pantry, Inc., 7.75%, 2/15/14		1,000		780,000
	Rite Aid Corp., 7.50%, 3/01/17		775		627,750
	Wal-Mart Stores, Inc., 6.50%, 8/15/37		1,900		1,909,855
	Wal-Mart Stores, Inc., 6.20%, 4/15/38		850		830,742
					4,895,881
Food Products - 0.4%	Kraft Foods, Inc., 7%, 8/11/37		1,455		1,418,020
Gas Utilities - 0.2%	El Paso Natural Gas Co., 8.625%, 1/15/22		265		293,387
	El Paso Natural Gas Co., 8.375%, 6/15/32		225		246,525
	Targa Resources, Inc., 8.50%, 11/01/13		320		304,000
					843,912
Health Care Equipment &	Biomet, Inc., 10.375%, 10/15/17 (h)		340		358,700
Supplies - 0.6%	Biomet, Inc., 11.625%, 10/15/17		340		359,125
	ReAble Therapeutics Finance LLC, 10.875%,
	11/15/14 (d)		1,380		1,380,000
					2,097,825

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
Health Care Providers &	Tenet Healthcare Corp., 6.50%, 6/01/12	$	1,020	$	990,675
Services - 0.5%	UnitedHealth Group, Inc., 5.80%, 3/15/36		870		686,823
	WellPoint, Inc., 5.95%, 12/15/34		85		71,560
					1,749,058
Hotels, Restaurants &	American Real Estate Partners LP, 8.125%, 6/01/12		3,165		3,022,575
Leisure - 1.6%	American Real Estate Partners LP, 7.125%, 2/15/13		320		286,400
	Circus and Eldorado Joint Venture, 10.125%,
	3/01/12		1,000		910,000
	Gaylord Entertainment Co., 6.75%, 11/15/14		150		133,125
	Greektown Holdings, LLC, 10.75%, 12/01/13 (d)(g)		315		226,800
	Harrah's Operating Co., Inc., 10.75%,
	2/01/18 (d)(h)		880		551,100
	Seneca Gaming Corp. Series B, 7.25%, 5/01/12		260		237,250
	Wynn Las Vegas LLC, 6.625%, 12/01/14		40		36,200
					5,403,450
Household Durables - 0.6%	Belvoir Land LLC Series A-1, 5.27%, 12/15/47		350		248,416
	Irwin Land LLC Series A-1, 5.03%, 12/15/25		525		458,047
	Irwin Land LLC Series A-2, 5.40%, 12/15/47		1,500		1,208,235
	Ohana Military Communities LLC Series 04I,
	6.193% (c)		350		321,171
					2,235,869
Household Products - 0.3%	Kimberly-Clark, Corp., 6.625%, 8/01/37		850		879,640
IT Services - 0.4%	iPayment, Inc., 9.75%, 5/15/14		240		201,000
	iPayment Investors LP, 12.75%, 7/15/14 (d)(h)		904		903,915
	SunGard Data Systems, Inc., 9.125%, 8/15/13		205		209,613
					1,314,528
Independent Power Producers &	NRG Energy, Inc., 7.25%, 2/01/14		50		48,750
Energy Traders - 0.1%	NRG Energy, Inc., 7.375%, 2/01/16		285		276,450
					325,200
Industrial	Sequa Corp., 11.75%, 12/01/15 (d)		690		600,300
Conglomerates - 0.6%	Sequa Corp., 13.50%, 12/01/15 (d)(h)		1,590		1,450,214
					2,050,514
Insurance - 4.1%	The Allstate Corp., 6.50%, 5/15/57 (a)		1,950		1,679,165
	American International Group, Inc., 8.175%,
	5/15/58 (a)(d)		1,230		1,101,980
	Berkshire Hathaway Finance Corp., 4.75%, 5/15/12		1,075		1,094,190
	Chubb Corp., 6%, 5/11/37		1,100		975,522
	Hartford Life Global Funding Trusts, 2.946%,
	9/15/09 (a)		925		924,667
	Lincoln National Corp., 6.05%, 4/20/67 (a)		675		543,080
	MetLife, Inc., 5.70%, 6/15/35		1,525		1,318,067
	Metropolitan Life Global Funding I, 4.25%,
	7/30/09 (d)		1,150		1,139,973
	Monument Global Funding Ltd., 2.646%,
	6/16/10 (a)(d)		1,810		1,794,410

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	New York Life Global Funding, 3.875%,
	1/15/09 (d)	$	850	$	851,491
	Progressive Corp., 6.70%, 6/15/37 (a)		605		513,591
	Prudential Financial, Inc., 5.70%, 12/14/36		675		542,293
	Prudential Financial, Inc. Series D, 5.90%, 3/17/36		500		415,770
	The Travelers Cos., Inc., 6.25%, 3/15/67 (a)		675		569,572
	ZFS Finance (USA) Trust V, 6.50%, 5/09/67 (a)(d)		675		578,437
					14,042,208
Leisure Equipment &	Quiksilver, Inc., 6.875%, 4/15/15		175		137,375
Products - 0.0%
Machinery - 0.4%	AGY Holding Corp., 11%, 11/15/14		360		322,200
	Accuride Corp., 8.50%, 2/01/15		265		180,200
	Sunstate Equipment Co. LLC, 10.50%, 4/01/13 (d)		950		745,750
					1,248,150
Marine - 0.3%	Nakilat, Inc. Series A, 6.067%, 12/31/33 (d)		1,050		899,787
	Navios Maritime Holdings, Inc., 9.50%, 12/15/14		141		137,828
					1,037,615
Media - 6.1%	Affinion Group, Inc., 10.125%, 10/15/13		515		517,575
	Affinion Group, Inc., 11.50%, 10/15/15		180		179,100
	CMP Susquehanna Corp., 9.875%, 5/15/14		645		406,350
	Cablevision Systems Corp. Series B, 7.133%,
	4/01/09 (a)		180		181,125
	Charter Communications Holdings I, LLC, 11%,
	10/01/15		400		303,000
	Charter Communications Holdings II, LLC, 10.25%,
	9/15/10		1,450		1,380,800
	Comcast Corp., 6.50%, 1/15/17		1,750		1,763,347
	Comcast Corp., 7.125%, 2/15/28		200		192,565
	Comcast Corp., 6.50%, 11/15/35		625		583,077
	Comcast Corp., 6.45%, 3/15/37		790		723,300
	Comcast Corp., 6.95%, 8/15/37		25		24,078
	Dex Media West LLC, 9.875%, 8/15/13		75		58,875
	DirecTV Holdings LLC, 8.375%, 3/15/13		125		129,063
	EchoStar DBS Corp., 5.75%, 10/01/08		175		175,219
	EchoStar DBS Corp., 7%, 10/01/13		43		40,850
	EchoStar DBS Corp., 7.125%, 2/01/16		75		69,188
	Network Communications, Inc., 10.75%, 12/01/13		155		117,025
	News America Holdings, Inc., 7.70%, 10/30/25		825		856,303
	News America Holdings, Inc., 8.45%, 8/01/34		625		695,569
	News America, Inc., 7.625%, 11/30/28		985		1,037,106
	Nielsen Finance LLC, 10%, 8/01/14		965		972,238
	R.H. Donnelley Corp., 11.75%, 5/15/15 (d)		1,720		1,272,800
	Rainbow National Services LLC, 8.75%, 9/01/12 (d)		200		202,250
	Rainbow National Services LLC, 10.375%,
	9/01/14 (d)		943		998,401

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	Sirius Satellite Radio, Inc., 9.625%, 8/01/13	$	70	$	57,400
	TCI Communications, Inc., 7.875%, 2/15/26		610		634,512
	TL Acquisitions, Inc., 10.50%, 1/15/15 (d)		1,000		880,000
	Time Warner Cable, Inc., 7.30%, 7/01/38		2,525		2,524,442
	Time Warner Cos., Inc., 7.57%, 2/01/24 (n)		3,040		3,032,829
	Time Warner Cos., Inc., 6.95%, 1/15/28		70		65,709
	Time Warner Cos., Inc., 6.625%, 5/15/29		90		81,272
	Time Warner, Inc., 7.625%, 4/15/31		205		203,197
	Time Warner, Inc., 7.70%, 5/01/32		85		84,929
	Windstream Regatta Holdings, Inc., 11%,
	12/01/17 (d)		823		534,950
					20,978,444
Metals & Mining - 1.6%	AK Steel Corp., 7.75%, 6/15/12		995		1,019,875
	Falconbridge Ltd., 6%, 10/15/15		825		788,693
	Falconbridge Ltd., 6.20%, 6/15/35		1,250		1,038,833
	Freeport-McMoRan Copper & Gold, Inc.,
	5.883%, 4/01/15 (a)		490		492,362
	Freeport-McMoRan Copper & Gold, Inc.,
	8.375%, 4/01/17		790		827,525
	Teck Cominco Ltd., 6.125%, 10/01/35		1,430		1,209,521
					5,376,809
Oil, Gas & Consumable	Amerada Hess Corp., 7.125%, 3/15/33		425		451,388
Fuels - 5.6%	Anadarko Petroleum Corp., 6.45%, 9/15/36		2,350		2,261,497
	Berry Petroleum Co., 8.25%, 11/01/16		140		137,900
	Burlington Resources Finance Co., 7.40%,
	12/01/31		875		982,440
	Canadian Natural Resources, Ltd., 6.25%, 3/15/38		375		354,001
	Canadian Natural Resources, Ltd., 6.75%, 2/01/39		1,025		1,021,570
	Chaparral Energy, Inc., 8.50%, 12/01/15		320		276,000
	Chesapeake Energy Corp., 6.375%, 6/15/15		150		141,750
	Compton Petroleum Finance Corp., 7.625%, 12/01/13		115		112,125
	Conoco Funding Co., 7.25%, 10/15/31		125		140,850
	ConocoPhillips Canada Funding Co., 5.95%,
	10/15/36		535		525,618
	ConocoPhillips Holding Co., 6.95%, 4/15/29		650		699,976
	Devon Energy Corp., 7.95%, 4/15/32		625		730,323
	EXCO Resources, Inc., 7.25%, 1/15/11		130		128,700
	EnCana Corp., 6.50%, 8/15/34		670		645,924
	EnCana Corp., 6.625%, 8/15/37		700		683,167
	EnCana Corp., 6.50%, 2/01/38		325		312,414
	Encore Acquisition Co., 6%, 7/15/15		40		36,200
	MidAmerican Energy Holdings Co., 5.80%, 10/15/36		700		636,454
	MidAmerican Energy Holdings Co., 5.95%, 5/15/37		800		732,702

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	MidAmerican Energy Holdings Co., 6.50%,
	9/15/37	$	1,525	$	1,504,080
	Nexen, Inc., 6.40%, 5/15/37		550		509,546
	OPTI Canada, Inc., 8.25%, 12/15/14		450		453,375
	Pemex Project Funding Master Trust,
	9.375%, 12/02/08		833		851,743
	Sabine Pass LNG LP, 7.50%, 11/30/16		330		283,800
	Suncor Energy, Inc., 6.50%, 6/15/38		645		618,276
	TransCanada PipeLines Ltd., 5.85%, 3/15/36		550		475,741
	Valero Energy Corp., 6.625%, 6/15/37		495		439,859
	Whiting Petroleum Corp., 7.25%, 5/01/12		40		39,300
	Whiting Petroleum Corp., 7.25%, 5/01/13		335		327,463
	XTO Energy, Inc., 6.75%, 8/01/37		1,925		1,863,267
	XTO Energy, Inc., 6.375%, 6/15/38		900		834,062
					19,211,511
Paper & Forest	Bowater, Inc., 5.776%, 3/15/10 (a)		80		65,600
Products - 0.5%	Domtar Corp., 7.125%, 8/15/15		60		56,400
	NewPage Corp., 10%, 5/01/12		1,625		1,555,938
					1,677,938
Pharmaceuticals - 1.8%	Bristol-Myers Squibb Co., 5.875%, 11/15/36		340		315,100
	Eli Lilly & Co., 5.55%, 3/15/37 (n)		2,275		2,104,680
	Schering-Plough Corp., 6.55%, 9/15/37		1,125		1,068,199
	Teva Pharmaceutical Finance LLC, 6.15%, 2/01/36		1,445		1,311,268
	Wyeth, 6%, 2/15/36		675		646,970
	Wyeth, 5.95%, 4/01/37		925		875,192
					6,321,409
Real Estate Investment Trusts	AvalonBay Communities, Inc., 6.625%, 9/15/11		350		357,791
(REITs) - 0.1%
Road & Rail - 0.1%	Canadian National Railway Co., 6.25%, 8/01/34		350		338,831
Semiconductors &	Amkor Technology, Inc., 7.75%, 5/15/13		80		73,200
Semiconductor Equipment - 0.2%	Amkor Technology, Inc., 9.25%, 6/01/16		85		80,538
	Freescale Semiconductor, Inc., 8.875%, 12/15/14		200		169,500
	Freescale Semiconductor, Inc., 9.125%,
	12/15/14 (h)		290		234,900
					558,138
Software - 0.7%	BMS Holdings, Inc., 9.954%,
	2/15/12 (a)(d)(h)		102		63,113
	Oracle Corp., 5.75%, 4/15/18 (n)		2,225		2,219,858
					2,282,971
Specialty Retail - 0.9%	AutoNation, Inc., 4.713%, 4/15/13 (a)		150		123,750
	AutoNation, Inc., 7%, 4/15/14		150		129,188
	General Nutrition Centers, Inc., 7.199%,
	3/15/14 (a)(h)		500		409,846
	General Nutrition Centers, Inc., 10.75%, 3/15/15		400		337,000
	Lazy Days' R.V. Center, Inc., 11.75%, 5/15/12		314		208,810

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
			Par
Industry	Corporate Bonds		(000)		Value
	Michaels Stores, Inc., 10%, 11/01/14	$	380	$	304,950
	Michaels Stores, Inc., 11.375%, 11/01/16		110		77,550
	Sonic Automotive, Inc. Series B, 8.625%, 8/15/13		2,100		1,680,000
					3,271,094
Wireless Telecommunication	Cricket Communications, Inc., 9.375%, 11/01/14		100		98,000
Services - 1.8%	Digicel Group Ltd., 8.875%, 1/15/15 (d)		240		221,400
	Digicel Group Ltd., 9.125%, 1/15/15 (d)(h)		560		506,800
	MetroPCS Wireless, Inc., 9.25%, 11/01/14		80		77,600
	Nordic Telephone Co. Holdings ApS, 8.875%,
	5/01/16 (d)		770		743,050
	Rogers Communications, Inc., 7.50%, 8/15/38		1,150		1,154,612
	Sprint Capital Corp., 6.875%, 11/15/28		915		725,138
	Vodafone Group Plc, 7.75%, 2/15/10 (n)		2,504		2,617,531
					6,144,131
	Total Corporate Bonds - 64.2%				221,519,387
	Foreign Government Obligations
	Bundesrepublik Deutscheland Series 07,
	4.25%, 7/04/39	EUR	740		1,079,510
	France Government Bond, 3.15%, 7/25/32		1,170		2,147,093
	Israel Government AID Bond, 5.50%, 4/26/24	$	825		885,248
	Israel Government AID Bond, 5.50%, 9/18/33		845		912,494
	Total Foreign Government Obligations - 1.4%				5,024,345
	Non-Government Agency Mortgage-Backed Securities
Collateralized Mortgage	American Home Mortgage Assets Series 2006-6 Class
Obligations - 4.1%	A1A, 2.651%, 12/25/46 (a)		355		214,917
	Bear Stearns Adjustable Rate Mortgage Series 2004-8
	Class 14A1, 5.473%, 11/25/34 (a)		799		778,016
	Citigroup Mortgage Loan Trust, Inc. Series 2005-4
	Class A, 5.343%, 8/25/35 (a)		722		632,121
	Countrywide Alternative Loan Trust Series 2005-64CB
	Class 1A15, 5.50%, 12/25/35		1,600		1,164,311
	Countrywide Alternative Loan Trust Series 2006-01A0
	Class 1A1, 4.251%, 8/25/46 (a)		367		271,921
	Countrywide Alternative Loan Trust Series 2006-0A19
	Class A1, 2.638%, 2/20/47 (a)		533		328,308
	Countrywide Alternative Loan Trust Series 2006-0A21
	Class A1, 2.648%, 3/20/47 (a)		984		609,697
	Countrywide Home Loan Mortgage Pass-Through Trust
	Series 2006-0A5 Class 2A1, 2.661%,
	4/25/46 (a)		425		257,833
	Deutsche Alt-A Securities, Inc. Alternate Loan Trust
	Series 2003-3 Class 2A1, 5.50%, 10/25/33		1,300		1,100,325
	Deutsche Alt-A Securities, Inc. Alternate Loan Trust
	Series 2006-0A1 Class A1, 2.661%,
	2/25/47 (a)		520		329,471

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Non-Government Agency Mortgage-Backed		Par
	Securities		(000)		Value
	GSR Mortgage Loan Trust Series 2005-AR4
	Class 6A1, 5.25%, 7/25/35 (a)	$	724	$	598,628
	GSR Mortgage Loan Trust Series 2006-0A1
	Class 2A1, 2.651%, 8/25/46 (a)		1,120		795,364
	Harborview Mortgage Loan Trust Series 2006-
	9 Class 2A1A, 2.668%, 11/19/36 (a)		739		465,257
	Homebanc Mortgage Trust Series 2006-2 Class
	A1, 2.641%, 12/25/36 (a)		1,109		811,559
	Maryland Insurance Backed Securities Trust
	Series 2006-1A, 5.55%, 12/10/65		2,500		1,750,000
	Structured Asset Securities Corp. Series 2002-
	AL1 Class A2, 3.45%, 2/25/32		2,108		1,703,413
	WaMu Mortgage Pass-Through Certificates Series 2005-
	AR10 Class 1A3, 4.835%, 9/25/35 (a)		1,800		1,576,932
	WaMu Mortgage Pass-Through Certificates Series 2007-
	0A4 Class 1A, 4.061%, 5/25/47 (a)		506		318,509
	WaMu Mortgage Pass-Through Certificates Series 2007-
	0A5 Class 1A, 4.041%, 6/25/47 (a)		867		638,522
					14,345,104
Commercial Mortgage-Backed	Banc of America Commercial Mortgage, Inc. Series 2005-
Securities - 13.0%	1 Class 4A, 4.988%, 11/10/42 (a)		2,180		2,148,562
	CS First Boston Mortgage Securities Corp. Series 2002-
	CP5 Class A2, 4.94%, 12/15/35		2,720		2,646,210
	Citigroup Commercial Mortgage Trust Series 2008-C7
	Class A4, 6.096%, 12/10/49 (a)		1,370		1,309,012
	Citigroup/Deutsche Bank Commercial
	Mortgage Trust Series 2007-CD5 Class A4,
	5.886%, 11/15/44 (a)		2,500		2,330,383
	Commercial Mortgage Pass-Through
	Certificates Series 2004-LB3A Class A3, 5.09%,
	7/10/37 (a)		960		951,545
	First Union National Bank Commercial Mortgage Series
	2001-C3 Class A3, 6.423%, 8/15/33		2,934		2,995,898
	First Union National Bank Commercial Mortgage Series
	2001-C4 Class A2, 6.223%, 12/12/33		2,265		2,302,304
	GMAC Commercial Mortgage Securities, Inc. Series 1999-
	C3 Class A2, 7.179%, 8/15/36 (a)		1,313		1,337,316
	GMAC Commercial Mortgage Securities, Inc. Series 2002-
	C3 Class A2, 4.93%, 7/10/39		2,350		2,281,357
	Heller Financial Commercial Mortgage Asset Series 1999-
	PH1 Class A2, 6.847%, 5/15/31 (a)		1,074		1,076,856
	JPMorgan Chase Commercial Mortgage Securities Corp.
	Series 2001-C1 Class A3, 5.857%, 10/12/35		2,140		2,153,975
	JPMorgan Chase Commercial Mortgage Securities Corp.
	Series 2004-CB8 Class A1A, 4.158%, 1/12/39		978		916,717

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Non-Government Agency Mortgage-Backed		Par
	Securities		(000)		Value
	JPMorgan Chase Commercial Mortgage
	Securities Corp. Series 2004-CBX Class A4,
	4.529%, 1/12/37	$	2,180	$	2,120,014
	JPMorgan Chase Commercial Mortgage
	Securities Corp. Series 2006-LDP9 Class A3,
	5.336%, 5/15/47		960		883,588
	JPMorgan Commercial Mortgage Finance
	Corp. Series 2000-C10 Class A2, 7.371%,
	8/15/32 (a)		1,624		1,669,467
	LB-UBS Commercial Mortgage Trust Series
	2007-C6 Class A4, 5.858%, 7/15/40 (a)		1,816		1,693,613
	LB-UBS Commercial Mortgage Trust Series
	2007-C7 Class A3, 5.866%, 9/15/45 (a)		5,000		4,656,263
	Merrill Lynch Mortgage Trust Series 2007-C1
	Class AM, 5.829%, 6/12/50 (a)(i)		925		823,329
	Morgan Stanley Capital I Series 2005-HQ6
	Class A4A, 4.989%, 8/13/42		1,475		1,380,528
	Morgan Stanley Capital I Series 2007-IQ16
	Class A4, 5.809%, 12/12/49		618		572,325
	Morgan Stanley Capital I Series 2007-T27 Class
	A4, 5.65%, 6/13/42 (a)		995		921,352
	Morgan Stanley Capital I Series 2008-T29 Class
	A4, 6.28%, 1/11/43 (a)		1,370		1,320,483
	Salomon Brothers Mortgage Securities VII, Inc. Series
	2000-C1 Class A2, 7.52%, 12/18/09 (a)		3,291		3,375,869
	Wachovia Bank Commercial Mortgage Trust Series 2005-
	C21 Class A3, 5.209%, 10/15/44 (a)		910		908,466
	Wachovia Bank Commercial Mortgage Trust Series 2006-
	C25 Class A4, 5.74%, 5/15/43 (a)		1,190		1,139,888
	Wachovia Bank Commercial Mortgage Trust Series 2007-
	C33 Class A4, 5.90%, 2/15/51 (a)		995		938,235
					44,853,555
	Total Non-Government Agency
	Mortgage-Backed Securities - 17.1%				59,198,659
	U.S. Government Agency Mortgage-Backed Securities
	Fannie Mae Guaranteed Pass-Through
	Certificates:
	5.00%, 3/01/21 - 7/01/36 (j)		7,380		7,072,769
	5.50%, 8/15/23 - 8/15/38 (j)		51,679		50,717,886
	6.00%, 8/01/29 - 3/01/38		8,519		8,568,220
	7.00%, 1/01/31 - 7/01/32		219		230,472
	Freddie Mac Mortgage Participation
	Certificates:
	5.00%, 8/01/33		70		67,106
	5.50%, 11/01/34 - 5/01/36		4,512		4,423,909

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	U.S. Government Agency Mortgage-Backed		Par
	Securities		(000)		Value
	6.00%, 2/01/13 - 12/01/18	$	2,147	$	2,192,996
	6.848%, 5/01/32		47		47,223
	7.00%, 9/01/31		20		20,729
	Ginnie Mae MBS Certificates:
	5.50%, 8/15/33		190		189,582
	6.50%, 8/21/38 (j)		200		205,500
	Total U.S. Government Agency
	Mortgage-Backed Securities - 21.4%				73,736,392
	U.S. Government Agency Mortgage-Backed Securities -
	Collateralized Mortgage Obligations
	Fannie Mae Trust Series 378 Class 5, 5%,
	7/01/36 (b)		3,984		1,035,415
	Fannie Mae Trust Series 2004-90 Class JH,
	4.239%, 11/25/34 (a)(b)		20,918		1,690,606
	Fannie Mae Trust Series 2005-5 Class PK, 5%,
	12/25/34		2,294		2,311,229
	Freddie Mac Multiclass Certificates Series
	2579 Class HI, 5%, 8/15/17 (b)		1,814		202,538
	Freddie Mac Multiclass Certificates Series
	2611 Class QI, 5.50%, 9/15/32 (b)		5,250		936,317
	Freddie Mac Multiclass Certificates Series
	2684 Class SP, 5.043%, 1/15/33 (a)(b)		395		65,594
	Freddie Mac Multiclass Certificates Series
	2825 Class VP, 5.50%, 6/15/15		1,201		1,232,840
	Freddie Mac Multiclass Certificates Series
	3208 Class PS, 4.643%, 8/15/36 (a)(b)		1,979		212,723
	Freddie Mac Multiclass Certificates Series
	3316 Class SB, 4.743%, 8/15/35 (a)(b)		359		47,039
	Total U.S. Government Agency Mortgage-Backed Securities -
	Collateralized Mortgage Obligations - 2.2%				7,734,301
	U.S. Government Obligations
	Federal Housing Administration, Hebre Home Hospital,
	6.25%, 9/01/28		1,009		1,030,136
	Resolution Funding Corp., 6.30%, 7/15/18 (f)		525		335,931
	Resolution Funding Corp., 6.196%, 10/15/18 (f)		525		329,994
	U.S. Treasury Inflation Indexed Bonds,
	2.375%, 1/15/27 (n)		1,415		1,569,830
	U.S. Treasury Inflation Indexed Bonds, 1.75%,
	1/15/28		4,680		4,520,213
	U.S. Treasury Notes, 3.875%, 5/15/18 (n)		16,070		15,931,894
	U.S. Treasury Notes, 5%, 5/15/37 (n)		1,595		1,694,563
	Total U.S. Government Obligations - 7.4%				25,412,561

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Preferred Securities
			Par
Industry	Capital Trusts		(000)		Value
Commercial Banks - 0.8%	BAC Capital Trust XI, 6.625%, 5/23/36	$	545	$	478,929
	RBS Capital Trust IV, 3.496% (a)(c)		475		377,015
	Wachovia Corp. Series K, 7.98% (a)(c)(n)		2,550		1,959,548
					2,815,492
Diversified Financial	Bank of America Corp., Series M, 8.125% (a)(c)		1,050		976,721
Services - 0.8%	JPMorgan Chase & Co., 7.90% (a)(c)(n)		1,925		1,780,664
					2,757,385
Electric Utilities - 0.2%	PECO Energy Capital Trust IV, 5.75%, 6/15/33		790		644,532
	Total Capital Trusts - 1.8%				6,217,409
	Preferred Stocks		Shares
Commercial Banks - 0.1%	Wachovia Corp. Series J, 8%		25,000		479,500
Diversified Financial	Citigroup, Inc., Series AA, 8.125%		25,500		524,025
Services - 0.2%
Electrical Equipment - 0.0%	Superior Essex Holding Corp. Series A, 9.50%		45,000		33,750
	Total Preferred Stocks - 0.3%				1,037,275
	Total Preferred Securities - 2.1%				7,254,684
			Beneficial
			Interest
	Other Interest (k)		(000)
Health Care Providers	Critical Care Systems International, Inc.	$	2		637
& Services - 0.0%
	Total Other Interests - 0.0%				637
	Total Long-Term Investments
	(Cost - $461,678,401) - 127.3%				439,604,481
			Par
	Short-Term Securities		(000)
U.S. Government Agency	Federal Home Loan Bank, 1.82%, 8/01/08 (l)		1,300		1,300,000
Obligations - 0.4%
	Total Short-Term Securities
	(Cost - $1,300,000) - 0.4%				1,300,000
	Options Purchased		Contracts (m)
Call Swaptions Purchased	Receive a fixed rate of 5.12% and pay a floating rate
	based on 3-month LIBOR, expiring November
	2010		11		342,408
	Receive a fixed rate of 5.39% and pay a floating rate
	based on 3-month LIBOR, expiring March 2012		6		342,989
	Receive a fixed rate of 5.47% and pay a floating rate
	based on 3-month LIBOR, expiring May 2012		11		611,901
	Receive a fixed rate of 6.025% and pay a floating rate
	based on 3-month LIBOR, expiring June 2012		7		584,114
					1,881,412

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Options Purchased		Contracts (m)
Put Swaptions Purchased	Pay a fixed rate of 5.12% and receive a floating rate
	based on 3-month LIBOR, expiring November
	2010		11	$	256,443
	Pay a fixed rate of 5.39% and receive a floating rate
	based on 3-month LIBOR, expiring March 2012		6		302,128
	Pay a fixed rate of 5.47% and receive a floating rate
	based 3-month LIBOR, expiring May 2012		11		491,142
	Pay a fixed rate of 6.025% and receive a floating rate
	based on 3-month LIBOR, expiring June 2012		7		223,043
					1,272,756
	Total Options Purchased
	(Cost - $2,586,422) - 0.9%				3,154,168
	Total Investments Before TBA Sale Commitments and
	*Options Written (Cost - $465,564,823) -**
	128.6%				444,058,649
			Par
	TBA Sale Commitments		(000)
	Fannie Mae Guaranteed Pass Through Certificates:
	5.00%, 3/01/21 - 7/01/36 (n)	$	(4,100)		(3,896,202	)
	5.50%, 8/15/23 - 8/15/38 (n)		(19,300)		(18,903,578	)
	6.00%, 8/01/29 - 3/01/38		(2,700)		(2,714,866	)
	Freddie Mac Mortgage Participation Certificates, 5.50%,
	11/01/34 - 5/01/36		(4,500)		(4,403,358	)
	Ginnie Mae MBS Certificates, 5.50%, 8/15/33		(100)		(98,875	)
	Total TBA Sale Commitments
	(Proceeds Received - $30,268,824) - (8.7)%				(30,016,879	)
	Options Written		Contracts
Call Options Written	10-Year U.S. Treasury Bonds, expiring August
	2008 at $117		68		(12,750	)
	30-Year U.S. Treasury Bonds, expiring November 2008
	at $118		100		(110,937	)
					(123,687	)
Call Swaptions Written	Pay a fixed rate of 5.01% and receive a floating rate
	based on 3-month LIBOR, expiring November
	2008		4 (m)		(125,384	)
	Pay a fixed rate of 4.94% and receive floating rate
	based on 3-month LIBOR, expiring December 2008		14 (m)		(405,986	)
	Pay a fixed rated of 4.58% and received a floating rate
	based on 3-month LIBOR, expiring May 2009		9 (m)		(166,851	)

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Options Written	Contracts		Value
	Pay a fixed rated of 5.485% and receive a floating rate
	based on 3-month LIBOR, expiring October
	2009	4 (m)	$	(252,567	)
	Pay a fixed rated of 5.67% and receive a floating rate
	based on 3-month LIBOR, expiring January 2010	11 (m)		(747,684	)
	Pay a fixed rate of 5.0825% and receive a floating rate
	based on 3-month LIBOR, expiring July 2010	2 (m)		(98,892	)
	Pay a fixed rate of 5.05% and receive a floating rate
	based on 3-month LIBOR, expiring May 2011	10 (m)		(404,570	)
	Pay a fixed rate of 5.08% and receive a floating rate
	based on 3-month LIBOR, expiring May 2011	6 (m)		(252,052	)
	Pay a fixed rate of 5.325% and receive a floating rate
	based on 3-month LIBOR, expiring July 2013	8 (m)		(276,559	)
				(2,730,545	)
Put Options Written	10-Year U.S. Treasury Bonds, expiring August
	2008 at $113	68		(17,000	)
Put Swaptions Written	Receive a fixed rate of 3.10% and pay a floating rate
	based on 3-month LIBOR, expiring October 2008	19 (m)		(211,614	)
	Receive a fixed rate of 5.01% and pay a floating rate
	based on 3-month LIBOR, expiring November
	2008	4 (m)		(48,836	)
	Receive a fixed rate of 4.94% and pay a floating rate
	based on 3-month LIBOR, expiring December 2008	14 (m)		(246,848	)
	Receive a fixed rate of 4.58% and pay a floating rate
	based on 3-month LIBOR, expiring May 2009	9 (m)		(384,444	)
	Receive a fixed rate of 5.485% and pay a floating rate
	based on 3-month LIBOR, expiring October
	2009	4 (m)		(90,324	)
	Receive a fixed rate of 5.67% and pay a floating rate
	based on 3-month LIBOR, expiring January 2010	11 (m)		(210,485	)
	Receive a fixed rate of 5.0825% and pay a floating rate
	based on 3-month LIBOR, expiring July 2010	2 (m)		(107,708	)
	Receive a fixed rate of 5.05% and pay a floating rate
	based on 3-month LIBOR, expiring May 2011	10 (m)		(528,890	)
	Receive a fixed rate of 5.08% and pay a floating rate
	based on 3-month LIBOR, expiring May 2011	6 (m)		(314,199	)

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)		(Percentages shown are based on Net Assets)
	Options Written	Contracts		Value
	Receive a fixed rate of 5.325% and pay a floating rate
	based on 3-month LIBOR, expiring July 2013	8 (m)	$	(273,203	)
				(2,416,551	)
	Total Options Written
	(Premiums Received - $5,865,577) - (1.5)%			(5,287,783	)
	Total Investments, Net of TBA Sale Commitments
	and Options Written - 118.4%			408,753,987
	Liabilities in Excess of Other Assets - (18.4)%			(63,485,206	)
	Net Assets - 100.0%		$	345,268,781

*	The cost and unrealized appreciation (depreciation) of investments as of July 31, 2008, as computed for federal income tax purposes were as follows:

Aggregate cost	$	466,736,706
Gross unrealized appreciation	$	2,871,175
Gross unrealized depreciation		(25,549,232	)
Net unrealized depreciation	$	(22,678,057	)

(a)	Variable rate security. Rate shown is as of report date.
(b)	Represents the interest only portion of a mortgage-backed security and has either a nominal or a notional amount of principal.
(c)	Security is perpetual in nature and has no stated maturity date.
(d)	Security exempt from registration under Rule 144a of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional investors. Unless otherwise indicated, these securities are considered to be liquid.
(e)	All, or a portion of security pledged as collateral in connection with open financial futures contracts.
(f)	Represents a zero coupon bond. Rate shown reflects the effective yield at the time of purchase.
(g)	Non-income producing security; issuer filed for bankruptcy or is in default of interest payments.
(h)	Represents a pay-in-kind security which may pay interest/dividends in additional face/shares.
(i)	Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the investment Company Act of 1940, were as follows:

	Purchase	Sale	Realized		Interest
Affiliate	Cost	Cost	Gain		Income
Merrill Lynch Mortgage Trust Series
2007-C1 Class AM, 5.829%, 6/12/50	-	-	-	$	48,376

(j)	Represents or includes a to-be-announced transaction. The Trust has committed to purchasing securities for which all specific information is not available at this time.
(k)	Other interests represent beneficial interest in liquidation trusts and other reorganization entities and are non-income producing.
(l)	The interest rates shown reflect the discount rate paid at time of purchase.
(m)	One contract represents a notional amount of $1,000,000.

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

(n)	All, or a portion of security held as collateral in connection with open reverse repurchase agreements. Reverse repurchase agreements outstanding as of July 31, 2008 were as follows:

	Interest	Trade	Maturity		Net Closing	Face
Counterparty	Rate	Date	Date		Amount	Amount
Credit Suisse
Securities LLC	3.00%	6/26/08	TBD	$	12,368,045	$ 12,330,000
Credit Suisse
Securities LLC	2.50%	7/24/08	TBD		1,902,059	1,901,662
JPMorgan Securities
Inc.	2.10%	7/30/08	7/31/08		1,177,069	1,177,000
Lehman Brothers
International	2.10%	6/12/08	TBD		1,463,730	1,459,219
Lehman Brothers
International	2.75%	6/13/08	TBD		25,195,646	25,101,689
Lehman Brothers
International	2.40%	7/11/08	8/13/08		43,137,102	43,051,000
Lehman Brothers
International	1.55%	7/16/08	TBD		16,221,082	16,210,613
Total				$	101,464,733	$ 101,231,183

For Trust compliance purposes, the Trusts' industry classifications refer to any one or more of the industry sub- classifications used by one or more widely recognized market indexes or ratings group indexes, and/or as defined by Trust management. This definition may not apply for purposes of this report, which may combine industry sub-classifications for reporting ease.
Forward foreign currency contracts as of July 31, 2008 were as follows:


Currency		Currency		Settlement		Unrealized
Purchased		Sold		Date		Appreciation
$	964,232	EUR	611,500	10/23/08	$	14,715
$	1,081,352	EUR	683,500	10/23/08		20,036
$	5,479,338	EUR	3,501,040	10/23/08		43,039
Total					$	77,790

Financial futures contracts purchased as of July 31, 2008 were as follows:


		Expiration		Face		Unrealized
Contracts	Issue	Date		Value		Appreciation
1,070	30-Year U.S. Treasury Bond	September 2008	$	121,918,678	$	1,666,322
232	Euro Dollar	March 2009	$	56,160,528		50,172
Total					$	1,716,494

Financial futures contracts sold as of July 31, 2008 were as follows:


		Expiration		Face		Unrealized
Contracts	Issue	Date		Value		Depreciation
448	2-Year U.S. Treasury Bond	September 2008	$	94,519,280	$	(456,720)
2,011	5-Year U.S. Treasury Bond	September 2008	$	223,179,228		(717,343)
166	10-Year U.S. Treasury Bond	September 2008	$	18,870,979		(190,490)
Total					$	(1,364,553)

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

• Swaps outstanding as of July 31, 2008 were as follows:
		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)

Receive a fixed rate of 4.88% and pay a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires August 2009	$	40,200	$	769,324
Receive a fixed rate of 4.7709% and pay a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires August 2009	$	27,800		490,984
Receive a fixed rate of 4.62377% and pay a floating rate based on
3-month LIBOR
Broker, Credit Suisse First Boston
Expires September 2009	$	50,000		847,488
Receive a fixed rate of 5.00% and pay a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires November 2010	$	4,600		144,369
Pay a fixed rate of 4.922% and receive a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires March 2011	$	13,500		(415,590	)
Receive a fixed rate of 5.496% and pay a floating rate based on
3-month LIBOR
Broker, Bank of America NA
Expires July 2011	$	25,100		1,218,631
Receive a fixed rate of 5.496% and pay a floating rate based on
3-month LIBOR
Broker, UBS Warburg
Expires November 2011	$	2,200		74,679
Receive a fixed rate of 5.025% and pay a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires November 2011	$	3,000		107,780

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)
Pay a fixed rate of 5.0016% and receive a floating rate based on
3-month LIBOR
Broker, UBS Warburg
Expires January 2012	$	8,300	$	(296,689	)
Pay a fixed rate of 5.58875% and receive a floating rate based on
3-month LIBOR
Broker, Goldman Sachs & Co.
Expires July 2012	$	42,000		(2,449,388	)
Receive a fixed rate of 5.07625% and pay a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires August 2012	$	82,500		3,269,298
Receive a fixed rate of 5.10531% and pay a floating rate based on
3-month LIBOR
Broker, Goldman Sachs & Co.
Expires August 2012	$	19,500		793,476
Receive a fixed rate of 5.0565% and pay a floating rate based on
3-month LIBOR
Broker, Bank of America NA
Expires August 2012	$	49,300		1,667,408
Receive a fixed rate of 4.9034% and pay a floating rate based on
3-month LIBOR
Broker, Barclays Bank, PLC
Expires September 2012	$	30,000		998,846
Receive a fixed rate of 4.856% and pay a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires October 2012	$	9,400		296,092
Receive a fixed rate of 4.32% and pay a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires November 2012	$	10,500		108,811
Receive a fixed rate of 4.25% and pay a floating rate based on
3-month LIBOR
Broker, Goldman Sachs & Co.
Expires November 2012	$	2,625		19,928

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)
Pay a fixed rate of 4.2424% and receive a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires December 2012	$	45,000	$	(351,683	)
Receive a fixed rate of 3.66375% and pay a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires April 2013	$	7,300		(145,645	)
Receive a fixed rate of 5.29375% and pay a floating rate based on
6-month LIBOR
Broker, Deutsche Bank AG London
Expires April 2013	GBP	3,990		(51,390	)
Receive a fixed rate of 5.14% and pay a floating rate based on
6-month British Pound Sterling LIBOR
Broker, Deutsche Bank AG London
Expires April 2013	GBP	2,000		(62,357	)
Receive a fixed rate of 4.2825% and pay a floating rate based on
3-month LIBOR
Broker, Credit Suisse First Boston
Expires July 2013	$	82,500		426,943
Pay a fixed rate of 4.51% and receive a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires October 2014	$	41,205		(342,680	)
Receive a fixed rate of 5.005% and pay a floating rate based on
3-month LIBOR
Broker, JPMorgan Chase
Expires October 2014	$	9,500		336,749
Pay a fixed rate of 4.50% and receive a floating rate based on
3-month LIBOR
Broker, JPMorgan Chase
Expires May 2015	$	2,800		16,314
Receive a fixed rate of 4.725% and pay a floating rate based on
3-month LIBOR
Broker, Morgan Stanley Capital Services
Expires August 2015	$	6,200		101,829

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)
Receive a fixed rate of 4.87% and pay a floating rate based on
3-month LIBOR Muni Swap Index
Broker, Goldman Sachs & Co.
Expires January 2016	$	5,000	$	121,409
Receive a fixed rate of 5.723% and pay a floating rate based on
3-month LIBOR
Broker, JPMorgan Chase
Expires July 2016	$	4,800		383,588
Pay a fixed rate of 5.155% and receive a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires September 2017	$	10,900		(419,010	)
Pay a fixed rate of 5.04015% and receive a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires September 2017	$	12,500		(378,727	)
Pay a fixed rate of 5.30755% and receive a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires October 2017	$	13,800		(695,902	)
Pay a fixed rate of 5.115% and receive a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires March 2018	$	6,600		(233,234	)
Receive a fixed rate of 4.311% and pay a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires May 2018	$	6,600		(186,098	)
Receive a fixed rate of 4.7058% and pay a floating rate based on
3-month LIBOR
Broker, UBS Warburg
Expires July 2018	$	8,700		21,776
Pay a fixed rate of 4.52165% and receive a floating rate based on
3-month LIBOR
Broker, Goldman Sachs & Co.
Expires July 2018	$	12,300		151,377

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)
Pay a fixed rate of 5.411% and receive a floating rate based on
3-month LIBOR
Broker, JPMorgan Chase
Expires August 2022	$	8,545	$	460,192
Pay a fixed rate of 5.365% and receive a floating rate based on
3-month LIBOR
Broker, Deutsche Bank AG London
Expires September 2027	$	8,000		(373,650	)
Pay a fixed rate of 5.0605% and receive a floating rate based on
3-month LIBOR
Broker, Goldman Sachs & Co.
Expires November 2037	$	6,200		(37,111	)
Pay a fixed rate of 5.06276% and receive a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires December 2037	$	1,300		(7,981	)
Pay a fixed rate of 5.0639% and receive a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires December 2037	$	1,300		(8,201	)
Pay a fixed rate of 4.785% and receive a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires January 2038	$	2,000		73,758
Pay a fixed rate of 4.601% and receive a floating rate based on
3-month LIBOR
Broker, Lehman Brothers Special Financing
Expires January 2038	$	5,000		326,686
Pay a fixed rate of 4.8325% and receive a floating rate based on
3-month LIBOR
Broker, Morgan Stanley Capital services
Expires January 2038	$	6,000		172,478
Receive a fixed rate of 5.2975% and pay a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires February 2038	$	700		29,824

BlackRock Core Bond Trust
Schedule of Investments July 31, 2008 (Unaudited)

		Notional		Unrealized
		Amount		Appreciation
		(000)		(Depreciation)
Receive a fixed rate of 5.1575% and pay a floating rate based on
3-month LIBOR
Broker, Citibank NA
Expires June 2038	$	1,000	$	20,860
Total			$	6,995,561

Currency Abbreviations:
EUR Euro
GBP British Pound

Item 2 – Controls and Procedures

2(a) –	The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) –	There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3 –	Exhibits

	Certifications – Attached hereto

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	BlackRock Core Bond Trust

	By:	/s/ Donald C. Burke
		Donald C. Burke
		Chief Executive Officer of
		BlackRock Core Bond Trust

	Date: September 19, 2008

	Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

	By:	/s/ Donald C. Burke
		Donald C. Burke
		Chief Executive Officer (principal executive officer) of
		BlackRock Core Bond Trust

	Date: September 19, 2008

	By:	/s/ Neal J. Andrews
		Neal J. Andrews
		Chief Financial Officer (principal financial officer) of
		BlackRock Core Bond Trust

	Date: September 19, 2008