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

Institutional Holders (2014Q3)
Portfolio Summary: 6 Institutional holders with a total value of $215,092,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 334,600 110,689,000 51.46% Put
2 Timber Hill LLC 127,600 42,211,000 19.62% Put
3 PEAK6 Group LLC 111,100 36,753,000 17.09% Put
4 SABBY MANAGEMENT, LLC 327 10,817,000 5.03% Put
5 Laurion Capital Management LP 30,000 9,924,000 4.61% Put
6 Virtu KCG Holdings LLC 14,200 4,698,000 2.18% 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.