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Interactive Brokers

802 hedge funds and large institutions have $20.9B invested in Interactive Brokers in 2025 Q2 according to their latest regulatory filings, with 146 funds opening new positions, 277 increasing their positions, 287 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed

80% more first-time investments, than exits

New positions opened: 146 | Existing positions closed: 81

36% more funds holding in top 10

Funds holding in top 10: 2230 (+8)

33% more capital invested

Capital invested by funds: $15.7B → $20.9B (+$5.2B)

8% more funds holding

Funds holding: 746802 (+56)

3% more call options, than puts

Call options by funds: $524M | Put options by funds: $511M

3% less repeat investments, than reductions

Existing positions increased: 277 | Existing positions reduced: 287

2.12% less ownership

Funds ownership: 348.87%346.75% (-2.1%)

Holders
802
Holders Change
+56
Holders Change %
+7.51%
% of All Funds
10.56%
Holding in Top 10
30
Holding in Top 10 Change
+8
Holding in Top 10 Change %
+36.36%
% of All Funds
0.39%
New
146
Increased
277
Reduced
287
Closed
81
Calls
$524M
Puts
$511M
Net Calls
+$12.8M
Net Calls Change
-$71.4M
Name Holding Trade Value Shares
Change
Change in
Stake
CSS
826
Cubist Systematic Strategies
Connecticut
-$2.07M -43,528 Closed
IUHSA
827
Itau Unibanco Holding S.A.
Brazil
-$1.68M -40,492 Closed
QC
828
Quadrature Capital
United Kingdom
-$1.64M -39,536 Closed
HT
829
Headlands Technologies
Illinois
-$1.55M -37,452 Closed
CAU
830
Caxton Associates (UK)
-$1.38M -33,432 Closed
SB
831
SIG Brokerage
New York
-$1.49M -31,504 Closed
PCM
832
Prelude Capital Management
New York
-$1.18M -28,428 Closed
USAA
833
United Services Automobile Association
Texas
-$1.17M -28,336 Closed
TC
834
TownSquare Capital
Utah
-$1.13M -27,372 Closed
YIH
835
Y-Intercept (HK)
Hong Kong
-$1.08M -26,048 Closed
QIM
836
Quantitative Investment Management
Virginia
-$1.01M -24,448 Closed
AIM
837
Aigen Investment Management
New York
-$1.01M -24,304 Closed
AC
838
Allstate Corporation
Illinois
-$940K -22,704 Closed
Simplex Trading
839
Simplex Trading
Illinois
-$1.06M -22,264 Closed
WLG
840
Williamson Legacy Group
Indiana
-$822K -19,848 Closed
MS
841
Maven Securities
Jersey
-$580K -14,000 Closed
1C
842
111 Capital
France
-$573K -13,844 Closed
NERM
843
New England Research & Management
Illinois
-$538K -13,000 Closed
PHK
844
Point72 Hong Kong
Hong Kong
-$521K -12,596 Closed
HWAM
845
Hennion & Walsh Asset Management
New Jersey
-$394K -9,528 Closed
ACA
846
Aptus Capital Advisors
Alabama
-$352K -8,496 Closed
HCA
847
Hyperion Capital Advisors
New York
-$350K -8,452 Closed
LAM
848
Lifestyle Asset Management
Texas
-$343K -8,292 Closed
IHL
849
Investment House LLC
California
-$331K -8,000 Closed
ONB
850
Old National Bancorp
Indiana
-$306K -7,392 Closed

IBKR Hedge Fund Activity: Q2 2025 in Review

802 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Interactive Brokers (IBKR) for Q2 2025, worth a combined $20.9B — up 33% from $15.7B a quarter earlier.

Buyers outnumbered sellers: 146 funds opened new IBKR positions and 81 closed out — a net gain of 65 holders — while 277 added to existing stakes and 287 trimmed.

The largest buyer was Wellington Management Group, adding an estimated $253M. The largest seller was Orbis Allan Gray, cutting an estimated $201M.

  • 802 institutional investors held Interactive Brokers (IBKR) as of Q2 2025, up from 746 in Q1 2025.
  • Funds reported $20.9B of Interactive Brokers stock for Q2 2025, up 33% quarter-over-quarter.
  • 146 funds opened new Interactive Brokers positions in Q2 2025 and 81 closed out, a net change of +65 holders.
  • The largest Interactive Brokers buyer in Q2 2025 was Wellington Management Group, an estimated $253M added.
  • The largest Interactive Brokers seller in Q2 2025 was Orbis Allan Gray, an estimated $201M sold.

Based on aggregated 13F filings for Q2 2025.