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BLUEBIRD BIO INC
BLUEBIRD BIO INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q3)
Portfolio Summary: 4 Institutional holders with a total value of $14,110,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 889 7,605,000 53.90% Call
2 CITADEL ADVISORS LLC 49,700 4,252,000 30.13% Call
3 GROUP ONE TRADING LLC 25,900 2,216,000 15.71% Call
4 SIMPLEX TRADING, LLC 171 37,000 0.26% 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.