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Notable Holders of Thoratec Corp (THOR)

  |   Expand Research on THOR   |   * Does Not Fully Represent All Holders
Fund Title Shares % Owned Source
CADIAN CAPITAL MANAGEMENT, LLC COM NEW 3,754,355 6.26% 13F
VANGUARD GROUP INC COM NEW 2,859,022 4.77% 13F
ORACLE INVESTMENT MANAGEMENT INC COM NEW 2,815,912 4.70% 13F
Passport Capital, LLC COM 2,568,200 4.29% 13F
JPMORGAN CHASE & CO COMMON 2,201,052 3.67% 13F
Maverick Capital COM NEW 1,661,138 2.77% 13F
BlackRock Institutional Trust Company, N.A. COM NEW 1,555,906 2.60% 13F
ROYCE & ASSOCIATES LLC COM NEW 1,525,000 2.54% 13F
BlackRock Fund Advisors COM NEW 1,425,504 2.38% 13F
FRONTIER CAPITAL MANAGEMENT CO LLC COM 1,161,550 1.94% 13F
RAINIER INVESTMENT MANAGEMENT INC/ COM NEW 1,028,210 1.72% 13F
ALGER FRED MANAGEMENT INC COMMON 939,995 1.57% 13F
FRANKLIN RESOURCES INC 837,760 1.40% 13F
WELLS FARGO & CO/MN EQUITY 812,725 1.36% 13F
EXPO CAPITAL MANAGEMENT LLC COM 775,000 1.29% 13F
PALISADE CAPITAL MANAGEMENT LLC/NJ COM NEW 766,112 1.28% 13F
THRIVENT FINANCIAL FOR LUTHERANS COM NEW 718,600 1.20% 13F
SECTORAL ASSET MANAGEMENT INC COMMON 711,014 1.19% 13F
CS MCKEE LP COMMON 623,620 1.04% 13F
ING INVESTMENT MANAGEMENT CO COM NEW 614,215 1.02% 13F
US BANCORP \DE\ COMMON 607,900 1.01% 13F
AMERIPRISE FINANCIAL INC COM 600,038 1.00% 13F
Cortina Asset Management, LLC COM 553,574 0.92% 13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ COM NEW 541,820 0.90% 13F
DEUTSCHE BANK AG\ COM NEW 482,768 0.81% 13F
Alyeska Investment Group, L.P. COM NEW 479,209 0.80% 13F
NORTHERN TRUST CORP COM 470,159 0.78% 13F
DIMENSIONAL FUND ADVISORS LP COM 464,752 0.78% 13F
LORD ABBETT & CO LLC COM 420,257 0.70% 13F
CASTLEROCK ASSET MANAGEMENT INC COM NEW 417,806 0.70% 13F
Bluefin Investment Management LLC COMMON 385,200 0.64% 13F
BLACKROCK ADVISORS LLC COM NEW 364,312 0.61% 13F
AQR CAPITAL MANAGEMENT LLC COM NEW 353,741 0.59% 13F
Visium Asset Management, LP COMMON STOCK 351,230 0.59% 13F
MANNING & NAPIER ADVISORS LLC COM NEW 347,980 0.58% 13F
TEACHERS ADVISORS INC COM NEW 344,328 0.57% 13F
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ COMMON STOCK 333,425 0.56% 13F
S Squared Technology, LLC COM 327,000 0.55% 13F
Invesco Ltd. COMMON 319,680 0.53% 13F
KING INVESTMENT ADVISORS INC/TX COMMON 314,350 0.52% 13F
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC EQTY US OTC 313,923 0.52% 13F
TIAA CREF INVESTMENT MANAGEMENT LLC COM NEW 270,151 0.45% 13F
NEW YORK STATE COMMON RETIREMENT FUND COMMON STOCK 241,774 0.40% 13F
ARONSON & JOHNSON & ORTIZ, LP COM 236,400 0.39% 13F
GUGGENHEIM CAPITAL LLC COM NEW 206,915 0.35% 13F
GEODE CAPITAL MANAGEMENT LLC COM NEW 204,108 0.34% 13F
PRICE T ROWE ASSOCIATES INC /MD/ COMM STK 197,592 0.33% 13F
BMO FINANCIAL CORP COM NEW 189,155 0.32% 13F
Artisan Partners Limited Partnership COM NEW 189,000 0.32% 13F
MFC GLOBAL INVESTMENT MANAGEMENT (U.S.), LLC COM 188,116 0.31% 13F
DIAMONDBACK CAPITAL MANAGEMENT, LLC COM NEW 181,557 0.30% 13F
Stephens Investment Management Group LLC COM NEW 172,068 0.29% 13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM * THORATEC CORP COM NEW 169,968 0.28% 13F
MANAGED ACCOUNT ADVISORS LLC 159,212 0.27% 13F
BlackRock Investment Management, LLC COM NEW 156,619 0.26% 13F
Perella Weinberg Partners Capital Management LP COM NEW 148,574 0.25% 13F
SCHWAB CHARLES INVESTMENT MANAGEMENT INC COM NEW 143,662 0.24% 13F
TOCQUEVILLE ASSET MANAGEMENT LP COM 135,550 0.23% 13F
AMERICAN INTERNATIONAL GROUP INC COM 130,432 0.22% 13F
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO COM 129,502 0.22% 13F
HSBC HOLDINGS PLC 122,574 0.20% 13F
BAIRD ROBERT W & CO INC /WI/ COMMON 122,113 0.20% 13F
UBS AG COM NEW 121,520 0.20% 13F
Goldman Sachs Asset Management, L.P. CMN 120,587 0.20% 13F
STATE OF WISCONSIN INVESTMENT BOARD COM NEW 110,571 0.18% 13F
PRINCIPAL FINANCIAL GROUP INC COM NEW 106,735 0.18% 13F
Citadel CMN 106,721 0.18% 13F
CITIGROUP INC (CALL) COM NEW 101,600 0.17% 13F
LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC COM 98,235 0.16% 13F
NEW YORK STATE TEACHERS RETIREMENT SYSTEM COM NEW 98,200 0.16% 13F
CAXTON ASSOCIATES LP COM NEW 95,802 0.16% 13F
Manulife Asset Management (North America) Ltd COM NEW 95,062 0.16% 13F
FIRST TRUST ADVISORS LP COM NEW 94,476 0.16% 13F
DENVER INVESTMENT ADVISORS LLC COMMON 91,182 0.15% 13F
AH Lisanti Capital Growth, LLC COM NEW 80,500 0.13% 13F
CREDIT SUISSE AG/ COM NEW 78,623 0.13% 13F
ROYAL BANK OF CANADA \ COM NEW 69,394 0.12% 13F
Timber Hill LLC (PUT) PUT 69,000 0.12% 13F
CNH PARTNERS LLC COM NEW 68,538 0.11% 13F
MORGAN STANLEY COM 67,746 0.11% 13F
BlackRock Group LTD COM NEW 65,909 0.11% 13F
Employees Retirement System of Texas COM NEW 65,480 0.11% 13F
CHICAGO EQUITY PARTNERS LLC COM NEW 65,345 0.11% 13F
MCKINLEY CAPITAL MANAGEMENT LLC /DELAWARE COM 64,102 0.11% 13F
KOPP INVESTMENT ADVISORS LLC COM NEW 63,217 0.11% 13F
PARAMETRIC PORTFOLIO ASSOCIATES Common Stock 55,687 0.09% 13F
COMERICA BANK COM 52,222 0.09% 13F
TFS CAPITAL LLC COM NEW 47,209 0.08% 13F
MILLENNIUM MANAGEMENT LLC COM NEW 46,293 0.08% 13F
BARCLAYS PLC (CALL) OPT 43,800 0.07% 13F
ALGERT COLDIRON INVESTORS LLC COM NEW 42,200 0.07% 13F
BANK OF OKLAHOMA NATIONAL ASSOCIATION / COM NEW 41,690 0.07% 13F
SAC Capital COMMON 41,581 0.07% 13F
Bay Hill Capital Management, LLC (PUT) COM NEW 40,500 0.07% 13F
TWIN CAPITAL MANAGEMENT INC COM 39,480 0.07% 13F
Wellington COM NEW 35,930 0.06% 13F
BANK OF AMERICA CORP /DE/ 34,993 0.06% 13F
JEFFERIES GROUP INC /DE/ COM NEW 34,934 0.06% 13F
FIFTH THIRD BANCORP COM NEW 33,863 0.06% 13F
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 33,727 0.06% 13F
MindShare Capital Management, LLC common 32,655 0.05% 13F
DEERE & CO COM NEW 32,120 0.05% 13F
LOEWS CORP COMMON 32,000 0.05% 13F
PAX WORLD MANAGEMENT LLC COM NEW 31,814 0.05% 13F
JANUS CAPITAL MANAGEMENT LLC COM 31,100 0.05% 13F
STATE TREASURER STATE OF MICHIGAN COM 31,100 0.05% 13F
HIGHLAND CAPITAL MANAGEMENT LP COM NEW 30,000 0.05% 13F
IBM Retirement Fund 885175307 29,466 0.05% 13F
BNP Paribas Investment Partners S.A. CS 29,462 0.05% 13F
JACOBS LEVY EQUITY MANAGEMENT INC COM NEW 29,300 0.05% 13F
CONTINENTAL ADVISORS LLC COMMON STOCK 27,900 0.05% 13F
Liberty Mutual Group Asset Management Inc. COM NEW 24,604 0.04% 13F
Spot Trading L.L.C (CALL) COM NEW 22,800 0.04% 13F
MASON STREET ADVISORS LLC COM NEW 22,700 0.04% 13F
GAGNON SECURITIES LLC COM 21,788 0.04% 13F
BlackRock Inc. COM NEW 20,597 0.03% 13F
TWO SIGMA INVESTMENTS LLC COM NEW 18,848 0.03% 13F
EMERALD ADVISERS INC/PA COM 16,762 0.03% 13F
Gotham Asset Management, LLC COM NEW 15,478 0.03% 13F
RENAISSANCE TECHNOLOGIES LLC COM NEW 15,400 0.03% 13F
1st Global Advisors, Inc. COM NEW 15,194 0.03% 13F
FIDUCIARY TRUST CO COMMON 13,550 0.02% 13F
KBC Group NV COM NEW 13,503 0.02% 13F
PEAK6 Investments, L.P. (PUT) COM NEW 13,000 0.02% 13F
GSA CAPITAL PARTNERS LLP COM NEW 12,965 0.02% 13F
NOMURA HOLDINGS INC CMN 12,723 0.02% 13F
KNIGHT CAPITAL GROUP, INC. COM NEW 12,039 0.02% 13F
World Asset Management Inc COM 11,673 0.02% 13F
Wellington Shields & Co., LLC COM 11,437 0.02% 13F
RUSSELL FRANK CO/ COMMON STOCKS 10,500 0.02% 13F
BLUESTEIN R H & CO COM 9,000 0.02% 13F
Placemark Investments, Inc. COM NEW 8,950 0.01% 13F
ALLIANZ GLOBAL INVESTORS OF AMERICA L P COM NEW 7,600 0.01% 13F
ALLSTATE CORP COMMON 6,860 0.01% 13F
ELLINGTON MANAGEMENT GROUP LLC COM NEW 6,400 0.01% 13F