INTERACTIVE BROKERS GRO-CL A (IBKR) Institutional Ownership

IBKR is currently held by 9 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.65B based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Cantillon Capital Management, which reported ownership valued at approximately $754.26M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Cantillon Capital Management's IBKR position is now estimated to be worth approximately $1.06B, representing an estimated gain of +41.20% since the filing period.

Major shareholders tracked on this page include Cantillon Capital Management, Egerton Capital UK, Bares Capital Management, and other prominent asset managers. Collectively, these investors account for approximately 91% of the total disclosed value among the investors covered in this analysis.

This page tracks institutional ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward INTERACTIVE BROKERS GRO-CL A (IBKR).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 20268$1,506,755,59122,461,279
Q4 20257$1,527,355,89423,749,897
Q3 20258$1,749,126,18525,419,651
Q2 20257$1,627,658,27729,374,811
Q1 20257$1,252,310,1427,562,716
Q4 20247$1,373,301,1897,770,361
Q3 20247$1,300,261,9689,330,238
Q2 20247$1,280,431,70210,443,978
Q1 20247$1,167,670,94910,850,800
Q4 20236$619,625,7457,624,925
Q3 20237$654,805,5557,731,792
Q2 20237$632,393,8067,861,339

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