Stock Ownership/IBKR

INTERACTIVE BROKERS GROUP IN (IBKR): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in IBKR · Financials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
41
13F filers
Aggregate Value
$2.5B
Across holders
Last Price
$93.05
2026-08-24
Sector
Financials
GICS
Quarterly fund activity25 increased15 reduced0 exited
Institutional Holders of IBKR
↗
41 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund8.34M$725.9M28.7%0.5%Added+$722.5MQ2 2026
VIKING GLOBAL INVESTORS LP
CIK 0001103804
Hedge Fund4.83M$420.5M16.6%1.2%Added+$299.1MQ2 2026
Egerton Capital (UK) LLP
CIK 0001581811
Hedge Fund4.13M$359.4M14.2%3.5%Reduced$-186.8MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund1.60M$139.5M5.5%0.1%Added+$96.7MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund1.44M$125.6M5.0%0.1%Added+$121.7MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.08M$94.2M3.7%0.0%Added+$42.7MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund964K$83.9M3.3%0.1%Added+$82.1MQ2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund867K$75.5M3.0%0.1%Added+$67.8MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund772K$67.2M2.7%0.0%Added+$16.2MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund742K$64.6M2.6%0.1%Added+$61.8MQ2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$725.9M· 28.7% of total· 0.5% port· 8.34M sh· +$722.5M QoQ· Q2 2026
VIKING GLOBAL INVESTORS LPAdded
Hedge Fund
$420.5M· 16.6% of total· 1.2% port· 4.83M sh· +$299.1M QoQ· Q2 2026
Egerton Capital (UK) LLPReduced
Hedge Fund
$359.4M· 14.2% of total· 3.5% port· 4.13M sh· $-186.8M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$139.5M· 5.5% of total· 0.1% port· 1.60M sh· +$96.7M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$125.6M· 5.0% of total· 0.1% port· 1.44M sh· +$121.7M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$94.2M· 3.7% of total· 0.0% port· 1.08M sh· +$42.7M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$83.9M· 3.3% of total· 0.1% port· 964K sh· +$82.1M QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$75.5M· 3.0% of total· 0.1% port· 867K sh· +$67.8M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$67.2M· 2.7% of total· 0.0% port· 772K sh· +$16.2M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$64.6M· 2.6% of total· 0.1% port· 742K sh· +$61.8M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$62.8M· 2.5% of total· 0.2% port· 721K sh· +$54.4M QoQ· Q2 2026
LONE PINE CAPITAL LLCAdded
Hedge Fund
$50.3M· 2.0% of total· 0.3% port· 578K sh· — QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$36.0M· 1.4% of total· 0.0% port· 414K sh· +$35.3M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$34.6M· 1.4% of total· 0.0% port· 397K sh· $-174K QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$24.2M· 1.0% of total· 0.1% port· 279K sh· +$22.6M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$23.9M· 0.9% of total· 0.0% port· 275K sh· — QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$18.4M· 0.7% of total· 0.0% port· 211K sh· +$17.8M QoQ· Q2 2026
Woodline Partners LPReduced
Hedge Fund
$16.5M· 0.7% of total· 0.1% port· 190K sh· $-14.4M QoQ· Q2 2026
SOROS FUND MANAGEMENT LLCReduced
Family Office
$13.2M· 0.5% of total· 0.2% port· 151K sh· $-43.0M QoQ· Q2 2026
PineBridge Investments, L.P.Added
Hedge Fund
$12.1M· 0.5% of total· 0.1% port· 177K sh· +$8.1M QoQ· Q3 2025
Gotham Asset Management, LLCReduced
Hedge Fund
$9.5M· 0.4% of total· 0.0% port· 109K sh· $-478K QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$9.3M· 0.4% of total· 0.1% port· 107K sh· — QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$8.7M· 0.3% of total· 0.0% port· 100K sh· $-25.8M QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCAdded
Hedge Fund
$7.8M· 0.3% of total· 0.0% port· 89K sh· +$6.2M QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$6.7M· 0.3% of total· 0.0% port· 77K sh· +$731K QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$6.3M· 0.2% of total· 0.0% port· 72K sh· — QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$5.6M· 0.2% of total· 0.0% port· 64K sh· $-34.6M QoQ· Q2 2026
Fulcrum Asset Management LLPReduced
Hedge Fund
$5.1M· 0.2% of total· 0.5% port· 58K sh· $-990K QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$4.3M· 0.2% of total· 0.0% port· 49K sh· — QoQ· Q2 2026
Bridgewater Associates, LPReduced
Hedge Fund
$3.7M· 0.1% of total· 0.0% port· 42K sh· $-2.6M QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$3.1M· 0.1% of total· 0.0% port· 36K sh· +$590K QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$1.8M· 0.1% of total· 0.0% port· 21K sh· — QoQ· Q2 2026
GAMCO INVESTORS, INC. ET ALReduced
Institutional Manager
$1.4M· 0.1% of total· 0.0% port· 16K sh· $-87K QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$1.3M· 0.1% of total· 0.0% port· 15K sh· $-3.3M QoQ· Q2 2026
Brevan Howard Capital Management LPReduced
Hedge Fund
$845K· 0.0% of total· 0.0% port· 10K sh· $-368K QoQ· Q2 2026
ArrowMark Colorado Holdings LLCUnchanged
Hedge Fund
$766K· 0.0% of total· 0.0% port· 9K sh· +$0 QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$660K· 0.0% of total· 0.0% port· 8K sh· $-1.0M QoQ· Q2 2026
Fisher Asset Management, LLCReduced
Institutional Manager
$643K· 0.0% of total· 0.0% port· 7K sh· $-4K QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$312K· 0.0% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Parallax Volatility Advisers, L.P.Added
Hedge Fund
$312K· 0.0% of total· 0.0% port· 4K sh· $-4.0M QoQ· Q2 2026
Alphadyne Asset Management LPAdded
Hedge Fund
$225K· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q2 2026
1–10 of 41
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