INTERACTIVE BROKERS GRO-CL A (IBKR) Institutional Ownership Changes & 13F Activity

INTERACTIVE BROKERS GRO-CL A (IBKR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Cantillon Capital Management, Viking Global Investors, Egerton Capital UK, Ancient Art (Teton Capital), and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2023Ancient Art (Teton Capital)Sell-28,204550,174$47,623,061
Q3 2023Cantillon Capital ManagementSell-14,8393,819,629$330,627,086
Q3 2023Bares Capital ManagementSell-4,9042,566,395$222,147,151
Q2 2023Cantillon Capital ManagementBuy230,0683,834,468$318,529,257
Q2 2023RV CapitalBuy85,000288,747$23,986,213
Q2 2023Renaissance Technologies LLCBuy36,300248,700$20,660
Q2 2023Bares Capital ManagementSell-25,3722,571,299$213,597,808
Q1 2023Bares Capital ManagementSell-468,1492,596,671$214,381,158
Q1 2023Ancient Art (Teton Capital)Sell-431,971578,378$47,750,888
Q1 2023Cantillon Capital ManagementBuy384,1863,604,400$297,579,264
Q1 2023RV CapitalBuy203,747203,747$16,821,352
Q1 2023Renaissance Technologies LLCSell-47,500212,400$17,536
Q1 20237G Capital ManagementBuy100100$8
Q4 2022Cantillon Capital ManagementBuy749,3423,220,214$232,982,483
Q4 2022Bares Capital ManagementSell-86,2343,064,820$221,739,727
Q4 2022Ancient Art (Teton Capital)Sell-50,0001,010,349$73,098,750
Q4 2022Renaissance Technologies LLCSell-34,900259,900$18,804
Q4 2022Oakcliff Capital PartnersSell-21,600339,647$24,573,000
Q3 2022Bares Capital ManagementSell-72,1863,151,054$201,384
Q3 2022Ancient Art (Teton Capital)Buy50,0001,060,349$67,767
Q3 2022Renaissance Technologies LLCBuy22,300294,800$18,841
Q3 2022Cantillon Capital ManagementSell-22,0392,470,872$157,914
Q2 2022Bares Capital ManagementSell-777,6713,223,240$177,310
Q2 2022Cantillon Capital ManagementBuy268,4082,492,911$137,135
Q2 2022Oakcliff Capital PartnersBuy61,400361,247$19,872
Q2 2022Renaissance Technologies LLCSell-4,800272,500$14,990
Q1 2022Bares Capital ManagementSell-1,186,4004,000,911$263,700
Q1 2022Renaissance Technologies LLCSell-201,300277,300$18,277
Q1 2022Ancient Art (Teton Capital)Sell-125,6511,010,349$66,592
Q1 2022Cantillon Capital ManagementBuy62,0112,224,503$146,617

Frequently asked questions about IBKR activity

  • Which institutional owners are buying IBKR?

    Institutional owners buying IBKR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in IBKR activity?

    "Buy" means an investor increased their reported position in IBKR compared to the prior reporting period. This reflects growing exposure to INTERACTIVE BROKERS GRO-CL A (IBKR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in IBKR increasing?

    Institutional interest in IBKR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

Related IBKR Institutional Insights