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

Institutional Holders (2014Q1)
Portfolio Summary: 5 Institutional holders with a total value of $159,949,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 317,300 97,053,000 60.68% Put
2 Timber Hill LLC 170,300 52,090,000 32.57% Put
3 Virtu KCG Holdings LLC 29,300 8,962,000 5.60% Put
4 SABBY MANAGEMENT, LLC 50 1,529,000 0.96% Put
5 SNS Financial Group, LLC 1,000 315,000 0.20%

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.