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

Institutional Holders (2015Q4)
Portfolio Summary: 3 Institutional holders with a total value of $3,904,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 SIMPLEX TRADING, LLC 230 28,000 0.72% Put
2 GROUP ONE TRADING LLC 30,800 1,343,000 34.40% Put
3 CITADEL ADVISORS LLC 58,100 2,533,000 64.88% 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.