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Which hedge funds own IBKR? INTERACTIVE BROKERS GROUP IN, Q2 2026 13F holders

Financial ServicesCapital Markets

109 tracked hedge funds disclosed a position in IBKR (INTERACTIVE BROKERS GROUP IN) in their Q2 2026 13F filings, worth $3.3bn in total. The largest holder by portfolio weight is Oakcliff Capital Partners, LP at 33.4% of its book. 33 opened a new position this quarter: Marvin & Palmer Associates Inc, Bancreek Capital Management, LP, Keystone Investors Pte Ltd, Maltese Capital Management LLC. 9 exited: Azora Capital LP, Intercapital, LLC, Bayforest Capital Ltd.

109
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
33
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
9
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$196m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$21.9m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$3.3bn
Combined value
Sum of the holders' reported positions in the security.
8.8%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

109 rows
Oakcliff Capital Partners, LP Hedge fund33.4%$89.7m1.03m0.0%held
Hengistbury Investment Partners LLP Hedge fund28.2%$87.8m1.01m−4.0%reduced
Ancient Art, L.P. Hedge fund22.9%$112m1.29m0.0%held
Lansing Management LP Hedge fund12.9%$21.4m245,725−15%reduced
RV Capital AG Hedge fund12.8%$48.8m561,086−26%reduced
Bronte Capital Management Pty Ltd. Hedge fund8.7%$76.9m883,526−31%reduced
Fremen Capital Management LP Hedge fund8.1%$9.2m105,719−10%reduced
AWH Capital, L.P. Hedge fund7.0%$10.1m116,3800.0%held
Cantillon Capital Management Long-only investor6.8%$45.1m517,833−95%reduced
Emmett Investment Management, LP Hedge fund5.6%$8.0m85,840−16%reduced
Pilgrim Partners Asia Pte Ltd Hedge fund5.3%$12.1m138,970+1.5%added
Marvin & Palmer Associates Inc Hedge fund5.0%$7.9m90,809–new
Egerton Capital (UK) LLP Hedge fund3.5%$359m4.13m−34%reduced
Bancreek Capital Management, LP Hedge fund2.4%$630k7,238–new
Endure Capital Management, LLC Hedge fund2.2%$3.4m39,2000.0%held
Militia Capital Management LLC Hedge fund1.4%$7.9m91,0000.0%held
Keystone Investors Pte Ltd Hedge fund1.4%$25.8m296,158–new
Viking Global Investors LP Hedge fund1.2%$420m4.83m+246%added
Qsemble Capital Management, LP Hedge fund0.9%$7.0m80,761−53%reduced
Prescott Group Capital Management, L.L.C. Hedge fund0.8%$9.7m111,6760.0%held
Maltese Capital Management LLC Hedge fund0.8%$4.5m51,700–new
Polymer Capital Management (HK) LTD Hedge fund0.8%$8.0m91,876+262%added
Lecap Asset Management Ltd Hedge fund0.6%$1.5m16,984−58%reduced
Lombard Odier Asset Management (USA) Corp Hedge fund0.6%$634k7,283+108%added
Two Sigma Investments, LP Hedge fund0.5%$726m8.34m+0.3%held
Gator Capital Management, LLC Hedge fund0.5%$2.5m29,000−58%reduced
Fulcrum Asset Management LLP Hedge fund0.5%$5.1m58,186−16%reduced
Ground Swell Capital, LLC Hedge fund0.5%$437k5,026–new
ION Fund Management Ltd Hedge fund0.4%$3.5m40,0000.0%held
Owls Nest Partners IA, LLC Hedge fund0.4%$1.1m12,5000.0%held
Numerai GP LLC Hedge fund0.3%$3.8m43,972−27%reduced
Fox Run Management, L.L.C. Hedge fund0.3%$1.9m21,586+254%added
Lone Pine Capital LLC Hedge fund0.3%$50.3m577,666–new
Walleye Capital LLC Hedge fund0.3%$62.8m721,389+6926%added
Freestone Grove Partners LP Hedge fund0.3%$45.1m518,245–new
MQS Management LLC Hedge fund0.3%$229k2,635–new
Tudor Investment Corp ET AL Hedge fund0.3%$64.6m741,915+120%added
Gillson Capital LP Hedge fund0.3%$4.5m51,500–new
Edgestream Partners, L.P. Hedge fund0.3%$8.6m98,278+163%added
Ninety One North America, Inc. Hedge fund0.2%$5.3m60,896–new
iSAM Funds (UK) Ltd Hedge fund0.2%$331k3,800–new
Formula Growth Ltd Hedge fund0.2%$662k7,600–new
Campbell & CO Investment Adviser LLC Hedge fund0.2%$3.6m41,050–new
Soros Fund Management Family office0.2%$13.2m151,470−77%reduced
Squarepoint Ops LLC Hedge fund0.2%$83.9m964,391+205%added
Alpine Woods Capital Investors, LLC Hedge fund0.2%$716k8,227–new
Landscape Capital Management, L.L.C. Hedge fund0.2%$2.4m28,124+97%added
SummitTX Capital, L.P. Hedge fund0.2%$5.9m67,995+2.2%added
Qube Research & Technologies Ltd Hedge fund0.1%$126m1.44m+285%added
Gsa Capital Partners LLP Hedge fund0.1%$2.1m23,582+57%added