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

Institutional Holders (2015Q4)
Portfolio Summary: 5 Institutional holders with a total value of $22,688,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 CITADEL ADVISORS LLC 52,900 10,091,000 44.48% Call
2 Timber Hill LLC 38,300 7,306,000 32.20% Call
3 SABBY MANAGEMENT, LLC 152 2,899,000 12.78% Call
4 Allianz Asset Management GmbH 11,200 2,136,000 9.41% Call
5 SIMPLEX TRADING, LLC 320 256,000 1.13% 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.