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

Institutional Holders (2015Q2)
Portfolio Summary: 7 Institutional holders with a total value of $299,427,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 326,900 132,048,000 44.10% Put
2 Timber Hill LLC 164,300 66,367,000 22.16% Put
3 Allianz Asset Management GmbH 113,900 46,009,000 15.37% Put
4 SABBY MANAGEMENT, LLC 1,110 44,837,000 14.97% Put
5 Virtu KCG Holdings LLC 16,700 6,746,000 2.25% Put
6 SIMPLEX TRADING, LLC 1,219 1,952,000 0.65% Put
7 SG Americas Securities, LLC 78,700 1,468,000 0.49% 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.