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

Institutional Holders (2015Q2)
Portfolio Summary: 4 Institutional holders with a total value of $368,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SABBY MANAGEMENT, LLC 2,244 272,000 73.91% Put
2 GROUP ONE TRADING LLC 59,600 72,000 19.57% Put
3 CITADEL ADVISORS LLC 11,800 14,000 3.80% Put
4 SIMPLEX TRADING, LLC 46 10,000 2.72% 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.