Dark
Light
System
Security
ACHILLION PHARMACEUTICALS INC
ACHILLION PHARMACEUTICALS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 6 Institutional holders with a total value of $14,542,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 GROUP ONE TRADING LLC 723,500 8,863,000 60.95% Call
2 SABBY MANAGEMENT, LLC 2,719 3,331,000 22.91% Call
3 CITADEL ADVISORS LLC 151,600 1,857,000 12.77% Call
4 Marathon Trading Investment Management LLC 20,600 252,000 1.73% Call
5 SIMPLEX TRADING, LLC 2,144 215,000 1.48% Call
6 BLAIR WILLIAM & CO/IL 2,000 24,000 0.17% 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.