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SPARK THERAPEUTICS INC
SPARK THERAPEUTICS INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q3)
Portfolio Summary: 5 Institutional holders with a total value of $13,611,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 1,379 5,755,000 42.28% Put
2 GROUP ONE TRADING LLC 128,900 5,379,000 39.52% Put
3 Iguana Healthcare Management, LLC 50,000 2,087,000 15.33% Put
4 CITADEL ADVISORS LLC 6,000 250,000 1.84% Put
5 SIMPLEX TRADING, LLC 367 140,000 1.03% Put

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.