ArcSight Inc (ARST) [Rocket]

Ownership

ArcSight Inc (ARST)

Portfolio as of:

Name	Shares	Change	Value	% Port	% OS	Hist	Date
VANGUARD GROUP INC	1,093,610	125,744	47,638,000	0.01	3.16	Hist	09/30/2010
UBS AG	809,405	772,085	35,247,970	0.05	2.34	Hist	09/30/2010
BARCLAYS PLC	707,774	669,496	30,822,000	0.04	2.04	Hist	09/30/2010
BlackRock Institutional Trust Company, N.A.	678,076	-38,667	29,529,000	0.01	1.96	Hist	09/30/2010
WASATCH ADVISORS LP	1,291,132	281,347	28,908,000	0.55	3.80	Hist	06/30/2010
Calamos Advisors LLC	1,179,888	0	26,418,000	0.13	3.47	Hist	06/30/2010
ALPINE ASSOCIATES ADVISORS	533,600	533,600	23,244,000	0.80	1.54	Hist	09/30/2010
DEUTSCHE BANK AG\	449,271	132,489	19,563,000	0.00	1.30	Hist	09/30/2010
TIG Advisors, LLC	427,983	427,983	18,638,000	2.75	1.24	Hist	09/30/2010
WATER ISLAND CAPITAL LLC	393,933	393,933	17,160,000	1.26	1.14	Hist	09/30/2010
GENERAL ELECTRIC CO	385,131	-291,275	16,772,000	0.07	1.11	Hist	09/30/2010
WADDELL & REED FINANCIAL INC	727,800	190,250	16,295,000	0.06	2.14	Hist	06/30/2010
CHESAPEAKE PARTNERS MANAGEMENT CO INC/MD	369,766	369,766	16,102,000	0.74	1.07	Hist	09/30/2010
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	359,150	308,150	15,640,000	0.07	1.04	Hist	09/30/2010
Copper Rock Capital Partners, LLC	647,930	290,040	15,596,000	1.01		Hist	09/30/2009
TCW GROUP INC	583,590	-238,901	14,928,000	0.06		Hist	12/31/2009
Tygh Capital Management, Inc.	656,644	92,451	14,702,000	0.71	1.93	Hist	06/30/2010
CADENCE CAPITAL MANAGEMENT LLC	519,495	38,125	14,624,000	0.28	1.54	Hist	03/31/2010
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	585,420	274,130	13,107,554	0.02	1.72	Hist	06/30/2010
HHR Asset Management, LLC	436,100	17,100	12,276,000	1.14	1.29	Hist	03/31/2010
RIVERBRIDGE PARTNERS LLC	532,879	302,520	11,931,000	0.69	1.57	Hist	06/30/2010
HIGHBRIDGE CAPITAL MANAGEMENT LLC	270,500	247,952	11,780,000	0.13	0.78	Hist	09/30/2010
Ranger Investment Management, L.P.	521,690	53,190	11,681,000	1.38	1.54	Hist	06/30/2010
MORGAN STANLEY	264,423	193,378	11,515,000	0.01	0.76	Hist	09/30/2010
DRIEHAUS CAPITAL MANAGEMENT LLC	475,152	389,192	11,437,000	0.55	1.40	Hist	06/30/2010
CARLSON CAPITAL L P	260,000	260,000	11,322,000	0.25	0.75	Hist	09/30/2010
CRITERION CAPITAL MANAGEMENT LLC	375,000	255,000	10,556,000	1.49	1.10	Hist	03/31/2010
RUSSELL FRANK CO/	445,542	30,179	9,975,000	0.02	1.31	Hist	06/30/2010
MANNING & NAPIER ADVISORS LLC	220,340	220,340	9,597,000	0.05	0.64	Hist	09/30/2010
DIMENSIONAL FUND ADVISORS LP	216,722	-78,522	9,440,000	0.01	0.63	Hist	09/30/2010
Champlain Investment Partners, LLC	378,950	-715	8,484,691	0.28	1.12	Hist	06/30/2010
KINGDON CAPITAL MANAGEMENT, L.L.C.	300,000	300,000	7,224,000	0.22		Hist	09/30/2009
SG Americas Securities, LLC	152,973	143,071	6,662,000	0.05	0.44	Hist	09/30/2010
TIAA CREF INVESTMENT MANAGEMENT LLC	150,902	-19,910	6,573,000	0.01	0.44	Hist	09/30/2010
Stephens Investment Management Group LLC	268,683	132,853	6,016,000	0.79	0.79	Hist	06/30/2010
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