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

Institutional Holders (2015Q3)
Portfolio Summary: 934 Institutional holders with a total value of $60,632,357,398.
#
Manager Name
Shares
Value ($)
%
Options
Notes
201 NISA INVESTMENT ADVISORS, LLC 81,768 23,905,000 0.04%
202 Ashfield Capital Partners, LLC 81,435 23,764,000 0.04%
203 Mitsubishi UFJ Asset Management Co., Ltd. 80,597 23,519,000 0.04%
204 ASCEND CAPITAL, LLC 79,880 23,311,000 0.04%
205 Jefferies Group LLC 79,400 23,170,000 0.04% Call
206 SABBY MANAGEMENT, LLC 78,629 22,945,000 0.04%
207 ASCEND CAPITAL, LLC 75,000 21,884,000 0.04% Call
208 Connor, Clark & Lunn Investment Management Ltd. 73,775 21,528,000 0.04%
209 I.G. INVESTMENT MANAGEMENT, LTD. 73,603 21,478,000 0.04%
210 Paloma Partners Management Co 73,533 21,457,000 0.04%
211 EDMOND DE ROTHSCHILD HOLDING S.A. 73,080 21,325,000 0.04%
212 BELLEVUE ASSET MANAGEMENT AG 71,770 20,943,000 0.03%
213 Parallax Volatility Advisers, L.P. 70,000 20,427,000 0.03% Put
214 COMERICA BANK 69,934 20,408,000 0.03%
215 US BANCORP \DE\ 69,067 20,154,000 0.03%
216 Gulf International Bank (UK) Ltd 68,091 19,870,000 0.03%
217 MCKINLEY CAPITAL MANAGEMENT LLC 68,011 19,846,000 0.03%
218 GAM Holding AG 67,038 19,562,000 0.03%
219 Arizona State Retirement System 64,298 18,763,000 0.03%
220 EDMOND DE ROTHSCHILD ASSET MANAGEMENT (FRANCE) 64,180 18,728,000 0.03%
221 Zurcher Kantonalbank (Zurich Cantonalbank) 63,891 18,644,000 0.03%
222 Jefferies Group LLC 62,600 18,267,000 0.03% Put
223 BAIRD FINANCIAL GROUP, INC. 62,293 18,178,000 0.03%
224 VIRTUS CAPITAL ADVISERS, LLC 62,094 18,120,000 0.03%
225 PUBLIC SECTOR PENSION INVESTMENT BOARD 61,930 18,072,000 0.03%
226 CI INVESTMENTS INC. 61,800 18,034,000 0.03%
227 Fiera Capital Corp 61,407 17,919,000 0.03%
228 HARTFORD INVESTMENT MANAGEMENT CO 61,044 17,813,000 0.03%
229 CITY NATIONAL BANK 60,831 17,751,000 0.03%
230 QS Investors, LLC 60,628 17,692,000 0.03%
231 JANE STREET GROUP, LLC 60,500 17,655,000 0.03% Put
232 ING GROEP NV 60,213 17,533,000 0.03%
233 Twin Tree Management, LP 59,200 17,275,000 0.03% Put
234 ICON ADVISERS INC/CO 58,760 17,147,000 0.03%
235 IBM Retirement Fund 57,304 17,038,000 0.03%
236 JGP Global Gestao de Recursos Ltda. 57,898 16,895,000 0.03%
237 CAPITAL FUND MANAGEMENT S.A. 57,636 16,819,000 0.03%
238 PDT Partners, LLC 57,546 16,792,000 0.03%
239 OPPENHEIMER & CO INC 57,503 16,780,000 0.03%
240 ROTHSCHILD & CO ASSET MANAGEMENT US INC. 56,282 16,424,000 0.03%
241 EXXONMOBIL INVESTMENT MANAGEMENT INC /TX 53,985 15,753,000 0.03%
242 WEXFORD CAPITAL LP 53,805 15,701,000 0.03%
243 KLINGENSTEIN FIELDS & CO LP 53,318 15,558,000 0.03%
244 Nan Shan Life Insurance Co., Ltd. 52,800 15,408,000 0.03%
245 HBK INVESTMENTS L P 52,532 15,329,000 0.03%
246 Provident Investment Management, Inc. 51,250 14,955,000 0.02%
247 CADIAN CAPITAL MANAGEMENT, LP 50,000 14,591,000 0.02%
248 NOMURA ASSET MANAGEMENT CO LTD 49,836 14,543,000 0.02%
249 NATIXIS ADVISORS, LLC 49,644 14,487,000 0.02%
250 CULLEN/FROST BANKERS, INC. 48,231 14,074,000 0.02%
Page 5 of 19

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.