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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 $300,619,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 315,400 133,174,000 44.30% Call
2 SABBY MANAGEMENT, LLC 3,102 130,979,000 43.57% Call
3 Timber Hill LLC 52,400 22,125,000 7.36% Call
4 Virtu KCG Holdings LLC 10,500 4,434,000 1.47% Call
5 Calamos Advisors LLC 1,183 3,383,000 1.13% Call
6 SIMPLEX TRADING, LLC 642 3,068,000 1.02% Call
7 Allianz Asset Management GmbH 6,700 2,829,000 0.94% Call
8 SG Americas Securities, LLC 11,300 627,000 0.21% 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.