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Sunday, November 29, 2009, 5:15PM ET - U.S. Markets Closed. Dow Down 1.48% Nasdaq Down 1.73%
Cubist Pharmaceuticals Inc. (CBST)On Nov 27: 16.61  Down 0.22 (1.31%)  
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 0%
% of Shares Held by Institutional & Mutual Fund Owners: 104%
% of Float Held by Institutional & Mutual Fund Owners: 104%
Number of Institutions Holding Shares: 206

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
BONNEY MICHAEL W59,74130-Jun-09
MARTIN DAVID W JR018-Jun-08
MAUPAY WALTER R JR27,15726-Aug-09
PEREZ ROBERT J12,30630-Jun-09
GUIFFRE CHRISTOPHERD T5,35931-Mar-08


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
Barclays Global Investors UK Holdings Ltd4,929,2538.51$99,570,91030-Sep-09
VANGUARD GROUP, INC. (THE)2,940,7835.07$59,403,81630-Sep-09
PRICE (T.ROWE) ASSOCIATES INC2,090,1003.61$42,220,02030-Sep-09
STATE STREET CORPORATION2,053,0903.54$41,472,41830-Sep-09
MAZAMA CAPITAL MANAGEMENT, INC1,762,2603.04$35,597,65230-Sep-09
ORBIMED ADVISORS LLC.1,753,8003.03$35,426,76030-Sep-09
MORGAN STANLEY1,623,8302.80$32,801,36630-Sep-09
FEDERATED INVESTORS, INC.8,096,17713.97$163,542,77530-Sep-09
WELLINGTON MANAGEMENT COMPANY, LLP7,791,06213.45$157,379,45230-Sep-09
LORD ABBETT & CO1,059,2701.83$21,397,25430-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
FEDERATED KAUFMANN FUND7,400,00012.77$146,890,00031-Jul-09
EATON VANCE WORLDWIDE HEALTH SCIENCES FD1,153,1001.99$23,292,62030-Sep-09
SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF953,2451.65$17,472,98030-Jun-09
PRICE (T.ROWE) SMALL CAP STOCK FUND901,5001.56$18,210,30030-Sep-09
ISHARES RUSSELL 2000 INDEX FD847,0731.46$17,110,87430-Sep-09
ISHARES S&P SMALLCAP 600 INDEX FD748,5121.29$12,679,79331-Oct-09
FEDERATED KAUFMANN SMALL CAP FUND722,3761.25$14,339,16331-Jul-09
PRICE (T.ROWE) HEALTH SCIENCES FUND701,2001.21$12,852,99630-Jun-09
VANGUARD SMALL-CAP INDEX FUND701,0241.21$12,849,76930-Jun-09
FIDELITY CONTRAFUND INC669,6501.16$13,526,93030-Sep-09

View Transactions for Insiders & Institutional Holders
* Value shown is computed using the security's price on the report date given.


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