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

Institutional Holders (2015Q4)
Portfolio Summary: 4 Institutional holders with a total value of $30,822,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 15,182 22,378,000 72.60% Call
2 GROUP ONE TRADING LLC 559,400 8,246,000 26.75% Call
3 CITADEL ADVISORS LLC 11,900 175,000 0.57% Call
4 SIMPLEX TRADING, LLC 164 23,000 0.07% 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.