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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 $123,460,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 174,400 78,738,000 63.78% Put
2 SABBY MANAGEMENT, LLC 579 26,141,000 21.17% Put
3 Timber Hill LLC 26,300 11,874,000 9.62% Put
4 Allianz Asset Management GmbH 10,400 4,695,000 3.80% Put
5 Virtu KCG Holdings LLC 3,400 1,535,000 1.24% Put
6 SIMPLEX TRADING, LLC 353 477,000 0.39% 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.