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

Institutional Holders (2015Q4)
Portfolio Summary: 6 Institutional holders with a total value of $164,061,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 247,800 134,524,000 82.00% Call
2 Timber Hill LLC 37,200 20,195,000 12.31% Call
3 Virtu KCG Holdings LLC 11,100 6,026,000 3.67% Call
4 Allianz Asset Management GmbH 4,600 2,497,000 1.52% Call
5 SIMPLEX TRADING, LLC 272 758,000 0.46% Call
6 SG Americas Securities, LLC 11,400 61,000 0.04% Call

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.