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

Institutional Holders (2014Q4)
Portfolio Summary: 4 Institutional holders with a total value of $2,277,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 534 1,986,000 87.22% Call
2 GROUP ONE TRADING LLC 6,100 227,000 9.97% Call
3 CITADEL ADVISORS LLC 1,700 63,000 2.77% Call
4 SIMPLEX TRADING, LLC 7 1,000 0.04% 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.