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Interactive Brokers Group Inc
Interactive Brokers Group Inc. Institutional holdings reported to the SEC.

Institutional Holders (2016Q3)
Portfolio Summary: 5 Institutional holders with a total value of $45,320,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 RUANE, CUNNIFF & GOLDFARB INC 1,001,923 35,338,000 77.97%
2 UNDERHILL INVESTMENT MANAGEMENT LLC 162,350 5,726,000 12.63%
3 GAMBLE JONES INVESTMENT COUNSEL 109,127 3,849,000 8.49%
4 SILVER CAPITAL MANAGEMENT LLC 11,260 397,000 0.88%
5 QUADRANT CAPITAL GROUP LLC 324 10,000 0.02%

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.