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

Institutional Holders (2015Q1)
Portfolio Summary: 6 Institutional holders with a total value of $153,642,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 194,000 87,587,000 57.01% Call
2 SABBY MANAGEMENT, LLC 1,106 49,934,000 32.50% Call
3 Timber Hill LLC 31,000 13,996,000 9.11% Call
4 Virtu KCG Holdings LLC 2,700 1,219,000 0.79% Call
5 SIMPLEX TRADING, LLC 276 590,000 0.38% Call
6 Allianz Asset Management GmbH 700 316,000 0.21% 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.