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

Institutional Holders (2015Q3)
Portfolio Summary: 9 Institutional holders with a total value of $285,020,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 452,900 132,161,000 46.37% Put
2 Timber Hill LLC 211,100 61,601,000 21.61% Put
3 SABBY MANAGEMENT, LLC 1,419 41,408,000 14.53% Put
4 Allianz Asset Management GmbH 67,400 19,668,000 6.90% Put
5 Virtu KCG Holdings LLC 30,500 8,900,000 3.12% Put
6 JPMORGAN CHASE & CO 24,247 7,076,000 2.48% Put
7 SIMPLEX TRADING, LLC 2,508 6,144,000 2.16% Put
8 SG Americas Securities, LLC 85,200 5,873,000 2.06%
9 GROUP ONE TRADING LLC 7,500 2,189,000 0.77% Put

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.