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

Institutional Holders (2015Q3)
Portfolio Summary: 8 Institutional holders with a total value of $281,369,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 378,200 110,363,000 39.22% Call
2 SABBY MANAGEMENT, LLC 3,090 90,169,000 32.05% Call
3 Timber Hill LLC 221,300 64,578,000 22.95% Call
4 Virtu KCG Holdings LLC 43,400 12,665,000 4.50% Call
5 GROUP ONE TRADING LLC 6,300 1,838,000 0.65% Call
6 SIMPLEX TRADING, LLC 2,135 1,069,000 0.38% Call
7 Allianz Asset Management GmbH 2,200 642,000 0.23% Call
8 SG Americas Securities, LLC 30,600 45,000 0.02%

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.