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

Institutional Holders (2015Q3)
Portfolio Summary: 6 Institutional holders with a total value of $188,969,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 281,700 131,030,000 69.34% Call
2 Timber Hill LLC 106,000 49,305,000 26.09% Call
3 Virtu KCG Holdings LLC 15,400 7,163,000 3.79% Call
4 SIMPLEX TRADING, LLC 567 1,081,000 0.57% Call
5 Allianz Asset Management GmbH 700 326,000 0.17% Call
6 SG Americas Securities, LLC 11,400 64,000 0.03%

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.