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Institutional Holdings of QUESTCOR PHARMACEUTICALS, INC. (QCOR) on 12/31/2011

1. Company Information

Company/StockQUESTCOR PHARMACEUTICALS, INC. (stock symbol: QCOR)
Funds Ownership217 out of total 3028 funds (7%) own this stock
Funds own total 56,797,041 shares, 91.28% of all outstanding shares
Funds BOUGHT 1,287,527 more shares (+2.32%) in the quarter ended on 12/31/2011

2. Top 20 Funds Held QCOR in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)FMR LLC8,755,081Added 0.65%0.07%14.07%
2.)BROADWOOD CAPITAL INC3,578,660Unchanged39.53%5.75%
3.)VANGUARD GROUP INC3,337,563Added 0.74%0.02%5.36%
4.)BLACKROCK FUND ADVISORS3,018,082Added 3.70%0.07%4.85%
5.)AMERICAN CENTURY COMPANIES INC2,261,565Added 20.61%0.16%3.63%
6.)OPPENHEIMER FUNDS INC1,687,476Cut -4.30%0.13%2.71%
7.)BANK OF NEW YORK MELLON CORP1,576,540Cut -2.31%0.03%2.53%
8.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,535,915Added 3.19%0.02%2.47%
9.)STATE STREET CORP1,534,988Cut -0.44%0.01%2.47%
10.)NEXT CENTURY GROWTH INVESTORS LLC1,512,802Added 5.78%2.76%2.43%
11.)PALO ALTO INVESTORS LLC1,348,449Cut -18.87%6.29%2.17%
12.)OAK RIDGE INVESTMENTS LLC1,112,863Cut -1.25%1.83%1.79%
13.)FIRST PACIFIC ADVISORS LLC1,052,400Cut -20.55%0.73%1.69%
14.)TURNER INVESTMENT PARTNERS INC1,033,731Cut -8.43%0.39%1.66%
15.)CENTURY CAPITAL MANAGEMENT LLC1,021,644Added 76.56%1.76%1.64%
16.)DIMENSIONAL FUND ADVISORS INC968,151Cut -3.67%0.05%1.56%
17.)INVESCO LTD815,309Cut -6.37%0.02%1.31%
18.)POLARIS CAPITAL MANAGEMENT INC743,316Cut -2.08%2.63%1.19%
19.)GOODMAN & COMPANY INVESTMENT COUNSEL LTD740,100New0.16%1.19%
20.)NEW AMSTERDAM PARTNERS LLC NY736,911Cut -5.62%1.23%1.18%



3. Top 20 Funds Held QCOR in this Quarter (By % of Portfolio) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)BROADWOOD CAPITAL INC3,578,660Unchanged39.53%5.75%
2.)BLACK HORSE CAPITAL MANAGEMENT LLC130,015Unchanged9.49%0.21%
3.)PALO ALTO INVESTORS LLC1,348,449Cut -18.87%6.29%2.17%
4.)FITZGERALD THOMAS H JR CT 115,800New5.77%0.19%
5.)THINKEQUITY LLC130,254New5.23%0.21%
6.)NEUMEIER POMA INVESTMENT COUNSEL LLC177,700Cut -15.14%3.50%0.29%
7.)NEXT CENTURY GROWTH INVESTORS LLC1,512,802Added 5.78%2.76%2.43%
8.)POLARIS CAPITAL MANAGEMENT INC743,316Cut -2.08%2.63%1.19%
9.)OAK RIDGE INVESTMENTS LLC1,112,863Cut -1.25%1.83%1.79%
10.)OLD MUTUAL ASSET MANAGERS UK LTD60,395New1.81%0.10%
11.)CENTURY CAPITAL MANAGEMENT LLC1,021,644Added 76.56%1.76%1.64%
12.)MIURA GLOBAL MANAGEMENT LLC340,000New1.67%0.55%
13.)PIER CAPITAL LLC280,624Cut -2.55%1.63%0.45%
14.)PEREGRINE ASSET ADVISERS INC26,650New1.60%0.04%
15.)INSIGHT CAPITAL RESEARCH & MANAGEMENT INC106,658Cut -21.89%1.50%0.17%
16.)WALL STREET ASSOCIATES360,190Cut -26.79%1.30%0.58%
17.)NEW AMSTERDAM PARTNERS LLC NY736,911Cut -5.62%1.23%1.18%
18.)BUFORD DICKSON HARPER & SPARROW INC22,060New1.16%0.04%
19.)DRIEHAUS CAPITAL MANAGEMENT LLC473,798Added 33.38%1.00%0.76%
20.)FIDUCIARY MANAGEMENT ASSOCIATES LLC288,210Cut -37.69%0.95%0.46%

4. Top 20 Funds BOUGHT NEW QCOR in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)GOODMAN & COMPANY INVESTMENT COUNSEL LTD740,1000.16%1.19%
2.)BAMCO INC NY 486,6000.13%0.78%
3.)WADDELL & REED FINANCIAL INC362,6800.04%0.58%
4.)ORBIMED ADVISORS LLC345,2000.47%0.55%
5.)MIURA GLOBAL MANAGEMENT LLC340,0001.67%0.55%
6.)TWO SIGMA INVESTMENTS LLC170,5140.08%0.27%
7.)MILLENNIUM MANAGEMENT LLC147,5990.05%0.24%
8.)THINKEQUITY LLC130,2545.23%0.21%
9.)ZURCHER KANTONALBANK (ZURICH CANTONALBANK)128,9500.25%0.21%
10.)FITZGERALD THOMAS H JR CT 115,8005.77%0.19%
11.)PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT LP100,7200.43%0.16%
12.)HBK INVESTMENTS L P64,8060.08%0.10%
13.)OLD MUTUAL ASSET MANAGERS UK LTD60,3951.81%0.10%
14.)CREDIT SUISSE 50,9760.00%0.08%
15.)CAPITAL GROWTH MANAGEMENT LP50,0000.05%0.08%
16.)BANK OF AMERICA CORP DE 50,000PUT0.00%0.08%
17.)HUTCHIN HILL CAPITAL LP50,0000.40%0.08%
18.)TWO SIGMA ADVISERS LLC36,8000.09%0.06%
19.)EMPLOYEES RETIREMENT SYSTEM OF TEXAS33,0000.02%0.05%
20.)UBS OCONNOR LLC32,1000.02%0.05%

5. Top 20 Funds SOLD OUT QCOR in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)VISIUM ASSET MANAGEMENT LP448,1570.60%0.72%
2.)CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM212,8630.02%0.34%
3.)PARK WEST ASSET MANAGEMENT LLC100,4040.58%0.16%
4.)LEUTHOLD WEEDEN CAPITAL MANAGEMENT LLC89,5430.15%0.14%
5.)GW CAPITAL MANAGEMENT LLC83,6860.08%0.13%
6.)ASCEND CAPITAL LLC82,400PUT0.18%0.13%
7.)QS INVESTORS LLC40,1000.02%0.06%
8.)PEAK6 INVESTMENTS LP31,2960.00%0.05%
9.)JD CAPITAL MANAGEMENT LLC27,4010.06%0.04%
10.)VOLEON CAPITAL MANAGEMENT LP13,2000.24%0.02%
11.)BECKER CAPITAL MANAGEMENT INC12,6500.02%0.02%
12.)AXA FINANCIAL INC12,3870.00%0.02%
13.)SHEETS SMITH & ASSOCIATES INC10,7620.17%0.02%
14.)GAM HOLDING LTD10,0000.01%0.02%
15.)ROYCE & ASSOCIATES LLC5,2000.00%0.01%
16.)PEAK6 INVESTMENTS LP2,800CALL0.00%0.00%
17.)ATIVO CAPITAL MANAGEMENT LLC2,4350.08%0.00%
18.)FAN ASSET MANAGEMENT LLC1,0000.02%0.00%
19.)CTC FUND MANAGEMENT LLC3000.00%0.00%
20.)SMITH ASSET MANAGEMENT GROUP LP2380.00%0.00%