Notable Holders of Biogen Idec, Inc. (BIIB)
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Expand Research on BIIB
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| PRIMECAP | COM | 24,706,226 | 10.17% | 13F |
| Fidelity Investments | COM | 17,631,870 | 7.26% | 13F |
| Clearbridge Advisors, LLC | COM | 13,302,596 | 5.48% | 13F |
| JPMORGAN CHASE & CO | COMMON | 10,196,893 | 4.20% | 13F |
| VANGUARD GROUP INC | COM | 9,467,716 | 3.90% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 6,567,866 | 2.70% | 13F |
| AMERIPRISE FINANCIAL INC | COM | 6,143,613 | 2.53% | 13F |
| MARSICO CAPITAL MANAGEMENT LLC | COM | 5,890,076 | 2.42% | 13F |
| PRICE T ROWE ASSOCIATES INC /MD/ | COMM STK | 5,420,678 | 2.23% | 13F |
| Wellington | COM | 4,691,299 | 1.93% | 13F |
| BLACKROCK ADVISORS LLC | COM | 3,199,723 | 1.32% | 13F |
| NORTHERN TRUST CORP | COM | 2,799,430 | 1.15% | 13F |
| BlackRock Fund Advisors | COM | 2,566,214 | 1.06% | 13F |
| Viking Global Investors | COM | 2,529,322 | 1.04% | 13F |
| JANUS CAPITAL MANAGEMENT LLC | COM | 2,259,420 | 0.93% | 13F |
| TIAA CREF INVESTMENT MANAGEMENT LLC | COM | 2,151,891 | 0.89% | 13F |
| BlackRock Group LTD | COM | 1,934,695 | 0.80% | 13F |
| MORGAN STANLEY | COM | 1,867,121 | 0.77% | 13F |
| Invesco Ltd. | COMMON | 1,767,485 | 0.73% | 13F |
| FRANKLIN RESOURCES INC | 1,590,108 | 0.65% | 13F | |
| GEODE CAPITAL MANAGEMENT LLC | COM | 1,452,248 | 0.60% | 13F |
| SECTORAL ASSET MANAGEMENT INC | COMMON | 1,409,603 | 0.58% | 13F |
| BlackRock Investment Management, LLC | COM | 1,273,200 | 0.52% | 13F |
| RAINIER INVESTMENT MANAGEMENT INC/ | COM | 1,239,340 | 0.51% | 13F |
| HUSSMAN ECONOMETRICS ADVISORS, INC. | COM | 1,192,000 | 0.49% | 13F |
| Goldman Sachs Asset Management, L.P. | CMN | 1,095,335 | 0.45% | 13F |
| LEGAL & GENERAL GROUP PLC | COM | 1,009,389 | 0.42% | 13F |
| Adage Capital | COM | 971,324 | 0.40% | 13F |
| Investec Asset Management LTD | COMMON STOCK | 890,707 | 0.37% | 13F |
| BARCLAYS PLC (CALL) | OPT | 850,900 | 0.35% | 13F |
| NEW YORK STATE COMMON RETIREMENT FUND | COMMON STOCK | 831,349 | 0.34% | 13F |
| DEUTSCHE BANK AG\ | COM | 824,973 | 0.34% | 13F |
| BlackRock Inc. | COM | 811,620 | 0.33% | 13F |
| CITIGROUP INC (CALL) | COM | 795,800 | 0.33% | 13F |
| Sumitomo Mitsui Trust Holdings, Inc. | COM | 778,727 | 0.32% | 13F |
| FIL Ltd | COM | 745,740 | 0.31% | 13F |
| UBS GLOBAL ASSET MANAGEMENT AMERICAS INC | EQTY US OTC | 712,711 | 0.29% | 13F |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 700,379 | 0.29% | 13F | |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM | * BIOGEN IDEC INC COM | 671,166 | 0.28% | 13F |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | COM | 667,047 | 0.27% | 13F |
| BANK OF AMERICA CORP /DE/ | 662,767 | 0.27% | 13F | |
| PGGM Investments | COM | 658,632 | 0.27% | 13F |
| RENAISSANCE TECHNOLOGIES LLC | COM | 640,361 | 0.26% | 13F |
| BMO FINANCIAL CORP | COM | 636,591 | 0.26% | 13F |
| MANAGED ACCOUNT ADVISORS LLC | 589,810 | 0.24% | 13F | |
| BlackRock Japan Co. Ltd | COM | 552,427 | 0.23% | 13F |
| CREDIT SUISSE AG/ | COM | 550,759 | 0.23% | 13F |
| AQR CAPITAL MANAGEMENT LLC | COM | 520,455 | 0.21% | 13F |
| SCHWAB CHARLES INVESTMENT MANAGEMENT INC | COM | 510,876 | 0.21% | 13F |
| RUSSELL FRANK CO/ | COMMON STOCKS | 503,850 | 0.21% | 13F |
| VIRGINIA RETIREMENT SYSTEMS ET AL | COM | 494,876 | 0.20% | 13F |
| ROOSEVELT INVESTMENT GROUP INC | COM | 486,080 | 0.20% | 13F |
| Mitsubishi UFJ Trust & Banking Corp | COM | 478,347 | 0.20% | 13F |
| ING INVESTMENT MANAGEMENT CO | COM | 474,233 | 0.20% | 13F |
| STATE OF WISCONSIN INVESTMENT BOARD | COM | 469,581 | 0.19% | 13F |
| PARAMETRIC PORTFOLIO ASSOCIATES | Common Stock | 415,247 | 0.17% | 13F |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | COM | 398,803 | 0.16% | 13F |
| Mizuho Trust & Banking Co., Ltd. | COM | 393,193 | 0.16% | 13F |
| SAC Capital | COMMON | 387,014 | 0.16% | 13F |
| Visium Asset Management, LP | COMMON STOCK | 385,993 | 0.16% | 13F |
| TEACHERS ADVISORS INC | COM | 385,314 | 0.16% | 13F |
| Origin Asset Management LLP | COM | 328,259 | 0.14% | 13F |
| MARVIN & PALMER ASSOCIATES INC | COM | 324,600 | 0.13% | 13F |
| MADISON SQUARE INVESTORS LLC. | COM | 317,800 | 0.13% | 13F |
| ANALYTIC INVESTORS INC/CA | 317,298 | 0.13% | 13F | |
| ARGENT CAPITAL MANAGEMENT LLC | 305,876 | 0.13% | 13F | |
| CAISSE DE DEPOT ET PLACEMENT DU QUEBEC | COMMON | 291,878 | 0.12% | 13F |
| GUGGENHEIM CAPITAL LLC | COM | 286,918 | 0.12% | 13F |
| Timber Hill LLC (PUT) | PUT | 267,200 | 0.11% | 13F |
| TWO SIGMA INVESTMENTS LLC | COM | 264,573 | 0.11% | 13F |
| PRINCIPAL FINANCIAL GROUP INC | COM | 262,017 | 0.11% | 13F |
| WELLS FARGO & CO/MN | CMNSTOCK | 242,345 | 0.10% | 13F |
| DIMENSIONAL FUND ADVISORS LP | COM | 239,389 | 0.10% | 13F |
| Manulife Asset Management (North America) Ltd | COM | 232,529 | 0.10% | 13F |
| Partner Fund Management, L.P. | COM | 230,846 | 0.10% | 13F |
| Alyeska Investment Group, L.P. | COM | 225,347 | 0.09% | 13F |
| Spot Trading L.L.C (CALL) | COM | 202,300 | 0.08% | 13F |
| KINGDON CAPITAL MANAGEMENT LLC | COM | 200,200 | 0.08% | 13F |
| LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC | COM | 192,323 | 0.08% | 13F |
| TD ASSET MANAGEMENT INC | COM | 191,097 | 0.08% | 13F |
| CAXTON ASSOCIATES LP | COM | 189,750 | 0.08% | 13F |
| OrbiMed Advisors | COM | 189,300 | 0.08% | 13F |
| ARROWSTREET CAPITAL LIMITED PARTNERSHIP | COM | 185,825 | 0.08% | 13F |
| UNITED SERVICES AUTOMOBILE ASSOCIATION | COMMON | 184,682 | 0.08% | 13F |
| Euclid Advisors LLC | COM | 183,000 | 0.08% | 13F |
| TIRSCHWELL & LOEWY INC | COM | 180,979 | 0.07% | 13F |
| SEI TRUST CO | 180,190 | 0.07% | 13F | |
| FIRST QUADRANT L P/CA | COM | 177,600 | 0.07% | 13F |
| Citadel | CMN | 177,159 | 0.07% | 13F |
| GREAT WEST LIFE ASSURANCE CO /CAN/ | COM | 170,709 | 0.07% | 13F |
| Grantham, Mayo, Van Otterloo & Co. LLC | COM | 170,610 | 0.07% | 13F |
| Antipodean Advisors LLC | COM | 159,000 | 0.07% | 13F |
| ROYAL BANK OF CANADA \ | COM | 148,568 | 0.06% | 13F |
| UBS AG | COM | 146,715 | 0.06% | 13F |
| OZ MANAGEMENT LP (PUT) | COM | 138,200 | 0.06% | 13F |
| MCKINLEY CAPITAL MANAGEMENT LLC /DELAWARE | COM | 137,043 | 0.06% | 13F |
| Hambrecht & Quist Capital Management LLC | COMMON | 133,154 | 0.05% | 13F |
| IBM Retirement Fund | 09062X103 | 127,675 | 0.05% | 13F |
| MILLENNIUM MANAGEMENT LLC | COM | 126,476 | 0.05% | 13F |
| COMERICA BANK | COM | 124,026 | 0.05% | 13F |
| KBC Group NV | COM | 123,275 | 0.05% | 13F |
| Employees Retirement System of Texas | COM | 121,800 | 0.05% | 13F |
| HSBC HOLDINGS PLC | 114,729 | 0.05% | 13F | |
| MANUFACTURERES LIFE INSURANCE CO | COM | 109,453 | 0.05% | 13F |
| Numeric Investors LLC | COMM | 108,870 | 0.04% | 13F |
| STATE TREASURER STATE OF MICHIGAN | COM | 108,849 | 0.04% | 13F |
| AMERICAN INTERNATIONAL GROUP INC | COM | 106,355 | 0.04% | 13F |
| CREDIT AGRICOLE S A | COM | 104,249 | 0.04% | 13F |
| SAMLYN CAPITAL, LLC | COM | 98,000 | 0.04% | 13F |
| JEFFERIES GROUP INC /DE/ (CALL) | COM | 97,600 | 0.04% | 13F |
| Irish Life Investment Managers | COM | 96,769 | 0.04% | 13F |
| OMERS ADMINISTRATION CORP | COM | 93,650 | 0.04% | 13F |
| GABELLI FUNDS LLC | COM | 93,500 | 0.04% | 13F |
| BAM Capital, LLC | COM | 93,000 | 0.04% | 13F |
| PUBLIC SECTOR PENSION INVESTMENT BOARD | COMMON | 89,406 | 0.04% | 13F |
| Partner Investment Management, L.P. | COM | 89,209 | 0.04% | 13F |
| HealthCor Management, L.P. | COMMON STOCK | 87,326 | 0.04% | 13F |
| ZWEIG ADVISERS LLC | 84,000 | 0.03% | 13F | |
| SHELL ASSET MANAGEMENT CO | COM | 83,812 | 0.03% | 13F |
| ARONSON & JOHNSON & ORTIZ, LP | COM | 83,200 | 0.03% | 13F |
| DIAMONDBACK CAPITAL MANAGEMENT, LLC | COM | 82,460 | 0.03% | 13F |
| KNIGHT CAPITAL GROUP, INC. (PUT) | PUT | 79,500 | 0.03% | 13F |
| HighVista Strategies LLC | COM | 78,234 | 0.03% | 13F |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 76,319 | 0.03% | 13F | |
| SCHRODER INVESTMENT MANAGEMENT GROUP | COM | 75,987 | 0.03% | 13F |
| Lingohr & Partner North America. Inc. | CS | 75,279 | 0.03% | 13F |
| Lingohr & Partner Asset Management GmbH | CS | 75,279 | 0.03% | 13F |
| Highbridge Capital | COMMON | 73,528 | 0.03% | 13F |
| WOLVERINE ASSET MANAGEMENT LLC | COM | 69,982 | 0.03% | 13F |
| RAYMOND JAMES & ASSOCIATES | COM | 69,095 | 0.03% | 13F |
| LEUTHOLD WEEDEN CAPITAL MANAGEMENT | COM | 67,344 | 0.03% | 13F |
| PUTNAM FL INVESTMENT MANAGEMENT CO | COM | 65,312 | 0.03% | 13F |
| BRAUN STACEY ASSOCIATES INC | COMMON | 63,991 | 0.03% | 13F |
| ING Investment Management (Europe) B.V. | COM | 63,458 | 0.03% | 13F |
| APG All Pensions Group NV | COM | 58,993 | 0.02% | 13F |
| MACQUARIE GROUP LTD | COMMON STOCK | 57,340 | 0.02% | 13F |
| Robeco Institutional Asset Management B.V. | COM | 57,023 | 0.02% | 13F |
| BNP Paribas Investment Partners S.A. | COM | 56,645 | 0.02% | 13F |
| SG Americas Securities, LLC | 55,602 | 0.02% | 13F | |
| THRIVENT FINANCIAL FOR LUTHERANS | COM | 55,130 | 0.02% | 13F |
| Parallax Volatility Advisers, LLC (PUT) | COM | 55,100 | 0.02% | 13F |
| OAK ASSOCIATES LTD /OH/ | COM | 53,600 | 0.02% | 13F |
| UNIONBANCAL CORP | COM | 53,180 | 0.02% | 13F |
| Korea Investment CORP | COM | 52,700 | 0.02% | 13F |
| GLENMEDE TRUST CO NA | COMMON | 51,750 | 0.02% | 13F |
| Boston Advisors | COM | 50,083 | 0.02% | 13F |
| Dynamic Capital Management Ltd | COM | 49,209 | 0.02% | 13F |
| ING GROEP NV | COM | 48,380 | 0.02% | 13F |
| DAI ICHI LIFE INSURANCE CO., LTD. | COM | 48,100 | 0.02% | 13F |
| DIAM Co., Ltd. | COM | 47,594 | 0.02% | 13F |
| World Asset Management Inc | COM | 47,358 | 0.02% | 13F |
| F&C Asset Management plc | USD0.0005 | 47,180 | 0.02% | 13F |
| MASON STREET ADVISORS LLC | COM | 46,955 | 0.02% | 13F |
| CIBC Global Asset Management Inc | COM | 45,884 | 0.02% | 13F |
| GOLDEN CAPITAL MANAGEMENT LLC | 45,450 | 0.02% | 13F | |
| NOMURA ASSET MANAGEMENT CO LTD | 45,252 | 0.02% | 13F | |
| FIRST INVESTORS MANAGEMENT CO INC | CSD | 42,100 | 0.02% | 13F |
| ROYAL LONDON ASSET MANAGEMENT LTD | COM | 41,269 | 0.02% | 13F |
| PEAK6 Investments, L.P. | COM | 41,100 | 0.02% | 13F |
| TWO SIGMA ADVISERS, LLC | COM | 38,200 | 0.02% | 13F |
| IG INVESTMENT MANAGEMENT LTD | COM | 36,623 | 0.02% | 13F |
| Artisan Partners Limited Partnership | COM | 36,303 | 0.01% | 13F |
| Winton Capital Management Ltd | COM | 35,800 | 0.01% | 13F |
| HANCOCK HOLDING CO | COM | 34,868 | 0.01% | 13F |
| RCM CAPITAL MANAGEMENT LLC | COM | 34,750 | 0.01% | 13F |
| D. E. Shaw & Co., INC. | COM | 34,301 | 0.01% | 13F |
| Gargoyle Services L.L.C. | COM | 31,947 | 0.01% | 13F |
| JD CAPITAL MANAGEMENT LLC (CALL) | COM | 31,700 | 0.01% | 13F |
| Weiss Multi-Strategy Advisers LLC (PUT) | COM | 31,300 | 0.01% | 13F |
| Counsel Portfolio Services Inc. | BIOGEN IDEC INC | 30,776 | 0.01% | 13F |
| TRAXIS PARTNERS LP | COM | 30,300 | 0.01% | 13F |
| EULAV ASSET MANAGEMENT, LLC | COM | 30,000 | 0.01% | 13F |
| Decatur Capital Management, Inc. | COM | 29,600 | 0.01% | 13F |
| Walleye Trading LLC (CALL) | COM | 29,600 | 0.01% | 13F |
| PARADIGM ASSET MANAGEMENT CO LLC | COM | 27,900 | 0.01% | 13F |
| Aperio Group, LLC | COMMON | 26,818 | 0.01% | 13F |
| COMMONWEALTH BANK OF AUSTRALIA | COM | 26,496 | 0.01% | 13F |
| ALLSTATE CORP | COMMON | 26,060 | 0.01% | 13F |
| Nottinghill Investment Advisers, Ltd. | COM | 26,011 | 0.01% | 13F |
| Horizon Kinetics LLC | 25,560 | 0.01% | 13F | |
| TWIN CAPITAL MANAGEMENT INC | COM | 25,450 | 0.01% | 13F |
| GW CAPITAL MANAGEMENT LLC | COMMON STOCK | 24,613 | 0.01% | 13F |
