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

Institutional Holders (2015Q1)
Portfolio Summary: 8 Institutional holders with a total value of $274,508,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 315,300 133,132,000 48.50% Put
2 Timber Hill LLC 180,800 76,341,000 27.81% Put
3 Allianz Asset Management GmbH 91,500 38,635,000 14.07% Put
4 SABBY MANAGEMENT, LLC 514 21,703,000 7.91% Put
5 Virtu KCG Holdings LLC 8,800 3,716,000 1.35% Put
6 SIMPLEX TRADING, LLC 1,109 851,000 0.31% Put
7 SG Americas Securities, LLC 18,300 116,000 0.04% Put
8 LUPO SECURITIES, LLC 22 14,000 0.01% 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.