Switch & Data Facilities Company, Inc. (SDXC) [Rocket]

Ownership

Switch & Data Facilities Company, Inc. (SDXC)

Portfolio as of:

Name	Shares	Change	Value	% Port	% OS	Hist	Date
COLUMBIA WANGER ASSET MANAGEMENT LLC	3,533,600	-330,400	62,757,000	0.31		Hist	03/31/2010
ALPINE ASSOCIATES ADVISORS	1,407,974	337,774	26,259,000	0.92		Hist	03/31/2010
Empire Capital Management, L.L.C.	1,300,000	1,300,000	23,088,000	2.69		Hist	03/31/2010
WESTCHESTER CAPITAL MANAGEMENT INC /NY/	1,231,411	-1,167,289	22,068,000	1.09		Hist	03/31/2010
JENNISON ASSOCIATES LLC	1,384,024	-108,280	18,837,000	0.04		Hist	09/30/2009
WATER ISLAND CAPITAL LLC	1,027,636	-223,098	18,251,000	1.74		Hist	03/31/2010
GLAZER CAPITAL, LLC	975,828	691,187	17,330,705	5.52		Hist	03/31/2010
AQR CAPITAL MANAGEMENT LLC	915,495	145,496	16,259,000	0.18		Hist	03/31/2010
VANGUARD GROUP INC	882,521	20,771	15,674,000	0.00		Hist	03/31/2010
WOLVERINE ASSET MANAGEMENT LLC	855,406	34,584	15,192,000	0.39		Hist	03/31/2010
First Eagle Investment Management, LLC	700,000	-244,000	12,432,000	0.09		Hist	03/31/2010
MASON STREET ADVISORS, LLC	612,795	-169,850	10,883,000	0.10		Hist	03/31/2010
SYMPHONY ASSET MANAGEMENT LLC	777,338	1,139	10,580,000	0.54		Hist	09/30/2009
Allianz Asset Management of America L.P.	664,406	-26,845	9,043,000	0.02		Hist	09/30/2009
NEXT CENTURY GROWTH INVESTORS LLC	652,600	-53,590	8,882,000	0.42		Hist	09/30/2009
BlackRock Institutional Trust Company, N.A.	459,754	-14,148	8,165,000	0.00		Hist	03/31/2010
AMERICAN INTERNATIONAL GROUP, INC.	442,624	0	7,861,000	0.08		Hist	03/31/2010
JPMORGAN CHASE & CO	384,643	-493,394	7,775,000	0.00		Hist	12/31/2009
BlackRock Fund Advisors	420,815	-16,693	7,474,000	0.00		Hist	03/31/2010
STATE STREET CORP	418,641	26,029	7,435,000	0.00		Hist	03/31/2010
Del Mar Asset Management, LP	400,000	-3,846	7,104,000	0.63		Hist	03/31/2010
CHARTWELL INVESTMENT PARTNERS/PA	335,494	-394,704	6,780,000	0.21		Hist	12/31/2009
EAGLE BOSTON INVESTMENT MANAGEMENT INC	358,557	37,360	6,367,972	0.93		Hist	03/31/2010
DIMENSIONAL FUND ADVISORS LP	356,279	0	6,328,000	0.01		Hist	03/31/2010
FRONTIER CAPITAL MANAGEMENT CO LLC	287,799	9,700	5,111,000	0.07		Hist	03/31/2010
ACT II MANAGEMENT, LP	325,056	-158,755	4,424,000	1.52		Hist	09/30/2009
CHESAPEAKE PARTNERS MANAGEMENT CO INC/MD	225,000	0	3,996,000	0.19		Hist	03/31/2010
CREDIT AGRICOLE S A	200,819	102,704	3,566,000	0.01		Hist	03/31/2010
TWO SIGMA INVESTMENTS, LP	193,701	173,501	3,440,000	0.04		Hist	03/31/2010
BLACKTHORN INVESTMENT GROUP LLC	160,000	160,000	3,234,000	1.08		Hist	12/31/2009
JET CAPITAL INVESTORS L P	150,000	150,000	3,032,000	1.08		Hist	12/31/2009
HAVENS ADVISORS LLC	160,300	0	2,847,000	1.09		Hist	03/31/2010
BENNETT LAWRENCE MANAGEMENT L L C/NY	205,800	-228,550	2,801,000	0.37		Hist	09/30/2009
AQR Arbitrage LLC	157,302	0	2,794,000	0.22		Hist	03/31/2010
SUSQUEHANNA INTERNATIONAL GROUP, LLP	154,909	-24,080	2,751,000	0.01		Hist	03/31/2010
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