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TESARO INC
TESARO INC. Institutional holdings reported to the SEC.

Institutional Holders (2016Q2)
Portfolio Summary: 5 Institutional holders with a total value of $32,666,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 2,158 18,138,000 55.53% Call
2 GROUP ONE TRADING LLC 75,100 6,312,000 19.32% Call
3 CITADEL ADVISORS LLC 47,800 4,018,000 12.30% Call
4 SPHERA FUNDS MANAGEMENT LTD. 450 3,782,000 11.58% Call
5 SIMPLEX TRADING, LLC 290 416,000 1.27% 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.