Koppers Holdings Inc (NY: KOP )

Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	33.96	34.47	32.98	33.32	174,261	-0.70(-2.05%)
May 23, 2011	34.72	34.77	33.95	34.02	67,705	-1.38(-3.90%)
May 20, 2011	34.98	35.78	34.40	35.40	97,808	+0.24(+0.69%)
May 19, 2011	35.74	36.01	34.77	35.16	127,281	-0.26(-0.73%)
May 18, 2011	35.23	35.53	34.94	35.42	102,585	+0.39(+1.10%)
May 17, 2011	35.42	35.89	34.80	35.03	104,748	-0.72(-2.00%)
May 16, 2011	36.31	36.70	35.73	35.75	82,122	-0.85(-2.33%)
May 13, 2011	37.26	37.40	36.37	36.60	129,347	-0.55(-1.47%)
May 12, 2011	37.27	37.70	36.82	37.14	92,133	-0.33(-0.88%)
May 11, 2011	37.66	37.88	37.19	37.48	109,667	-0.40(-1.06%)
May 10, 2011	37.59	38.10	37.27	37.88	130,633	+0.60(+1.60%)
May 09, 2011	36.52	37.50	36.25	37.28	102,269	+0.60(+1.63%)
May 06, 2011	37.84	38.08	35.46	36.68	359,796	-0.79(-2.12%)
May 05, 2011	37.70	38.80	37.19	37.48	154,247	-1.27(-3.27%)
May 04, 2011	39.25	39.48	38.03	38.74	149,968	-0.55(-1.41%)
May 03, 2011	39.83	39.91	38.98	39.29	105,071	-0.64(-1.61%)

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