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BIOGEN IDEC INC
BIOGEN IDEC INC. Institutional holdings reported to the SEC.

Institutional Holders (2016Q1)
Portfolio Summary: 983 Institutional holders with a total value of $51,245,429,753.
#
Manager Name
Shares
Value ($)
%
Options
Notes
101 TEACHER RETIREMENT SYSTEM OF TEXAS 264,281 68,798,000 0.13%
102 CREDIT AGRICOLE S A 263,118 68,495,000 0.13%
103 BARCLAYS PLC 260,201 67,653,000 0.13%
104 TWO SIGMA ADVISERS, LP 256,969 66,894,000 0.13%
105 UBS Group AG 249,748 65,014,000 0.13%
106 VAN ECK ASSOCIATES CORP 245,976 64,032,000 0.12%
107 D. E. Shaw & Co., Inc. 244,800 63,726,000 0.12% Put
108 RAYMOND JAMES & ASSOCIATES 244,516 63,652,000 0.12%
109 TWO SIGMA INVESTMENTS, LP 243,912 63,495,000 0.12%
110 Korea Investment CORP 241,912 62,974,000 0.12%
111 SECTORAL ASSET MANAGEMENT INC 234,572 61,064,000 0.12%
112 Robeco Institutional Asset Management B.V. 234,381 61,015,000 0.12%
113 VIKING GLOBAL INVESTORS LP 230,947 60,120,000 0.12%
114 GOLDMAN SACHS GROUP INC 230,100 59,900,000 0.12% Put
115 State of Tennessee, Department of Treasury 226,836 59,049,000 0.12%
116 First Eagle Investment Management, LLC 224,585 58,464,000 0.11%
117 TD ASSET MANAGEMENT INC 205,208 53,420,000 0.10%
118 HONEYWELL INTERNATIONAL INC 204,600 53,261,000 0.10%
119 ProShare Advisors LLC 203,240 52,907,000 0.10%
120 BALYASNY ASSET MANAGEMENT L.P. 201,967 52,576,000 0.10%
121 FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ 200,507 52,196,000 0.10%
122 Senator Investment Group LP 200,000 52,064,000 0.10%
123 Retirement Systems of Alabama 199,900 52,038,000 0.10%
124 Chevy Chase Trust Holdings, LLC 197,606 51,441,000 0.10%
125 DekaBank Deutsche Girozentrale 194,401 49,439,000 0.10%
126 NN INVESTMENT PARTNERS HOLDINGS N.V. 189,801 49,410,000 0.10%
127 FIL Ltd 184,049 47,912,000 0.09%
128 Candriam S.C.A. 181,400 46,967,000 0.09%
129 Camber Capital Management LP 175,000 45,556,000 0.09%
130 UNITED SERVICES AUTOMOBILE ASSOCIATION 174,783 45,500,000 0.09%
131 STATE OF WISCONSIN INVESTMENT BOARD 172,991 45,033,000 0.09%
132 GATEWAY INVESTMENT ADVISERS LLC 172,519 44,910,000 0.09%
133 RUSSELL FRANK CO/ 171,852 44,730,000 0.09%
134 HSBC HOLDINGS PLC 171,808 44,532,000 0.09%
135 Nationwide Fund Advisors 188,548 44,338,000 0.09%
136 GMT CAPITAL CORP 170,000 44,254,000 0.09%
137 PANAGORA ASSET MANAGEMENT INC 167,371 43,570,000 0.09%
138 BNP Paribas Asset Management Holding S.A. 164,201 42,744,000 0.08%
139 VOLORIDGE INVESTMENT MANAGEMENT, LLC 162,564 42,319,000 0.08%
140 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 156,902 40,845,000 0.08%
141 CANADA LIFE ASSURANCE Co 143,811 37,406,000 0.07%
142 Paloma Partners Management Co 143,246 37,290,000 0.07%
143 Swedbank 139,806 36,394,000 0.07%
144 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 139,645 36,352,000 0.07%
145 PROFUND ADVISORS LLC 137,298 35,741,000 0.07%
146 FIRST TRUST ADVISORS LP 137,145 35,702,000 0.07%
147 PIEDMONT INVESTMENT ADVISORS INC 131,737 34,293,776 0.07%
148 CITIGROUP INC 130,100 33,867,000 0.07% Put
149 ROTHSCHILD & CO ASSET MANAGEMENT US INC. 129,402 33,686,000 0.07%
150 SEI INVESTMENTS CO 128,359 33,414,000 0.07%
Page 3 of 20

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.