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REGENERON PHARMACEUTICALS INC
REGENERON PHARMACEUTICALS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q3)
Portfolio Summary: 6 Institutional holders with a total value of $124,806,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 145,600 52,492,000 42.06% Put
2 PEAK6 Group LLC 135,200 48,742,000 39.05% Put
3 Timber Hill LLC 46,300 16,692,000 13.37% Put
4 Iguana Healthcare Management, LLC 10,000 3,605,000 2.89% Put
5 Virtu KCG Holdings LLC 5,300 1,911,000 1.53% Put
6 SG Americas Securities, LLC 50,000 1,364,000 1.09% 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.