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INTERACTIVE BROKERS GROUP IN
INTERACTIVE BROKERS GROUP IN. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 3 Institutional holders with a total value of $4,026,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 GROUP ONE TRADING LLC 102,900 3,001,000 74.54% Put
2 CITADEL ADVISORS LLC 35,100 1,024,000 25.43% Put
3 SIMPLEX TRADING, LLC 59 1,000 0.02% 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.