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

Institutional Holders (2015Q1)
Portfolio Summary: 4 Institutional holders with a total value of $35,397,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 92,100 15,961,000 45.09% Put
2 Timber Hill LLC 86,800 15,042,000 42.50% Put
3 Allianz Asset Management GmbH 24,800 4,298,000 12.14% Put
4 SIMPLEX TRADING, LLC 261 96,000 0.27% 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.