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

Institutional Holders (2015Q2)
Portfolio Summary: 8 Institutional holders with a total value of $364,713,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 4,345 175,512,000 48.12% Call
2 CITADEL ADVISORS LLC 344,400 139,117,000 38.14% Call
3 Timber Hill LLC 82,100 33,163,000 9.09% Call
4 Virtu KCG Holdings LLC 14,300 5,776,000 1.58% Call
5 Allianz Asset Management GmbH 11,900 4,807,000 1.32% Call
6 SIMPLEX TRADING, LLC 762 3,149,000 0.86% Call
7 Calamos Advisors LLC 1,078 2,463,000 0.68% Call
8 SG Americas Securities, LLC 25,800 726,000 0.20% Call

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.