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

Institutional Holders (2014Q4)
Portfolio Summary: 4 Institutional holders with a total value of $376,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 GROUP ONE TRADING LLC 159,000 251,000 66.76% Call
2 SABBY MANAGEMENT, LLC 508 80,000 21.28% Call
3 CITADEL ADVISORS LLC 27,100 43,000 11.44% Call
4 SIMPLEX TRADING, LLC 110 2,000 0.53% 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.