Dark
Light
System
Security
GILEAD SCIENCES INC
GILEAD SCIENCES INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 15 Institutional holders with a total value of $170,636,298.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Timber Hill LLC 523,800 49,373,000 28.93% Call
2 CITADEL ADVISORS LLC 467,700 44,085,000 25.84% Call
3 MUFG Securities EMEA plc 200,000 18,852,000 11.05% Call
4 GROUP ONE TRADING LLC 149,100 14,054,000 8.24% Call
5 SIMPLEX TRADING, LLC 6,894 8,164,000 4.78% Call
6 SABBY MANAGEMENT, LLC 797 7,513,000 4.40% Call
7 Virtu KCG Holdings LLC 78,200 7,371,000 4.32% Call
8 Calamos Advisors LLC 2,690 6,878,000 4.03% Call
9 COMMERZBANK AKTIENGESELLSCHAFT /FI 60,000 5,656,000 3.31% Call
10 SG Americas Securities, LLC 242,000 3,985,000 2.34% Call
11 SPHERA FUNDS MANAGEMENT LTD. 394,200 3,954,000 2.32% Call
12 Marathon Trading Investment Management LLC 5,500 519,000 0.30% Call
13 SNS Financial Group, LLC 2,200 222,000 0.13%
14 LUPO SECURITIES, LLC 0 5,298 0.00% Call
15 Rothschild Capital Partners, LLC 50 5,000 0.00% 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.