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Interactive Brokers
IBKR

909 hedge funds and large institutions have $26.1B invested in Interactive Brokers in 2025 Q3 according to their latest regulatory filings, with 191 funds opening new positions, 312 increasing their positions, 301 reducing their positions, and 78 closing their positions.

New
Increased
Maintained
Reduced
Closed

145% more first-time investments, than exits

New positions opened: 191 | Existing positions closed: 78

25% more capital invested

Capital invested by funds: $20.9B → $26.1B (+$5.2B)

17% more funds holding in top 10

Funds holding in top 10: 30 → 35 (+5)

13% more funds holding

Funds holding: 802 → 909 (+107)

4% more repeat investments, than reductions

Existing positions increased: 312 | Existing positions reduced: 301

1% more call options, than puts

Call options by funds: $601M | Put options by funds: $597M

261.49% less ownership

Funds ownership: 346.75% → 85.26% (-261%)

Holders
909
Holders Change
+107
Holders Change %
+13.34%
% of All Funds
11.93%
Holding in Top 10
35
Holding in Top 10 Change
+5
Holding in Top 10 Change %
+16.67%
% of All Funds
0.46%
New
191
Increased
312
Reduced
301
Closed
78
Calls
$601M
Puts
$597M
Net Calls
+$3.59M
Net Calls Change
-$9.2M

Top Buyers

1
Vanguard Group
Vanguard Group
Pennsylvania
+$695M
2
Geode Capital Management
Geode Capital Management
Massachusetts
+$230M
3
State Street
State Street
Massachusetts
+$221M
4
TD Asset Management
TD Asset Management
Ontario, Canada
+$138M
5
Wellington Management Group
Wellington Management Group
Massachusetts
+$103M

Top Sellers

1
BlackRock
BlackRock
New York
-$583M
2
Marshall Wace
Marshall Wace
United Kingdom
-$121M
3
AM
AGF Management
Ontario, Canada
-$114M
4
ECU
Egerton Capital (UK)
United Kingdom
-$113M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$95.5M
Name Holding Trade Value Shares
Change 		Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$3.64B +$695M +11,048,679 +26%
BlackRock
2
BlackRock
New York
$2.13B -$583M -9,267,761 -23%
State Street
3
State Street
Massachusetts
$1.28B +$221M +3,517,729 +23%
CCM
4
Cantillon Capital Management
New York
$871M -$8.78M -139,605 -1%
Kayne Anderson Rudnick Investment Management
5
Kayne Anderson Rudnick Investment Management
California
$838M -$19.9M -315,575 -3%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$750M +$103M +1,630,620 +18%
GWM
7
Greenwich Wealth Management
Connecticut
$713M -$31.3M -497,256 -5%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$712M +$230M +3,661,731 +55%
OAG
9
Orbis Allan Gray
Bermuda
$657M -$12.3M -196,200 -2%
JP Morgan Chase
10
JP Morgan Chase
New York
$623M -$69.1M -1,097,942 -11%
Bank of America
11
Bank of America
North Carolina
$525M +$2.09M +33,261 +0.4%
ECU
12
Egerton Capital (UK)
United Kingdom
$430M -$113M -1,802,710 -22%
Fidelity Investments
13
Fidelity Investments
Massachusetts
$429M -$28.1M -447,103 -7%
American Century Companies
14
American Century Companies
Missouri
$410M +$22.1M +351,136 +6%
Invesco
15
Invesco
Georgia
$396M +$19.5M +309,455 +6%
WIM
16
Waverton Investment Management
United Kingdom
$339M +$30.3M +481,693 +11%
Neuberger Berman Group
17
Neuberger Berman Group
New York
$333M -$2.22M -35,244 -0.7%
Jacobs Levy Equity Management
18
Jacobs Levy Equity Management
New Jersey
$326M -$41.5M -659,389 -12%
BAMCO Inc
19
BAMCO Inc
New York
$317M +$25.9M +411,344 +10%
Two Sigma Advisers
20
Two Sigma Advisers
New York
$289M +$51.2M +813,900 +24%
Morgan Stanley
21
Morgan Stanley
New York
$279M -$35.5M -564,202 -12%
Royal Bank of Canada
22
Royal Bank of Canada
Ontario, Canada
$257M -$29.1M -462,147 -11%
JFL
23
Jarislowsky, Fraser Ltd
Quebec, Canada
$256M -$31M -492,093 -12%
Two Sigma Investments
24
Two Sigma Investments
New York
$246M +$34.8M +552,725 +18%
Northern Trust
25
Northern Trust
Illinois
$245M -$8.04M -127,808 -3%
1
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IBKR Hedge Fund Activity: Q3 2025 in Review

909 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Interactive Brokers (IBKR) for Q3 2025, worth a combined $26.1B — up 25% from $20.9B a quarter earlier.

Buyers outnumbered sellers: 191 funds opened new IBKR positions and 78 closed out — a net gain of 113 holders — while 312 added to existing stakes and 301 trimmed.

The largest buyer was Vanguard Group, adding an estimated $695M. The largest seller was BlackRock, cutting an estimated $583M.

  • 909 institutional investors held Interactive Brokers (IBKR) as of Q3 2025, up from 802 in Q2 2025.
  • Funds reported $26.1B of Interactive Brokers stock for Q3 2025, up 25% quarter-over-quarter.
  • 191 funds opened new Interactive Brokers positions in Q3 2025 and 78 closed out, a net change of +113 holders.
  • The largest Interactive Brokers buyer in Q3 2025 was Vanguard Group, an estimated $695M added.
  • The largest Interactive Brokers seller in Q3 2025 was BlackRock, an estimated $583M sold.

Based on aggregated 13F filings for Q3 2025.