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Interactive Brokers

975 hedge funds and large institutions have $24.7B invested in Interactive Brokers in 2025 Q4 according to their latest regulatory filings, with 164 funds opening new positions, 332 increasing their positions, 346 reducing their positions, and 85 closing their positions.

New
Increased
Maintained
Reduced
Closed

93% more first-time investments, than exits

New positions opened: 164 | Existing positions closed: 85

7% more funds holding

Funds holding: 909975 (+66)

2% more call options, than puts

Call options by funds: $492M | Put options by funds: $483M

0.96% more ownership

Funds ownership: 85.26%86.22% (+0.96%)

4% less repeat investments, than reductions

Existing positions increased: 332 | Existing positions reduced: 346

6% less capital invested

Capital invested by funds: $26.1B → $24.7B (-$1.44B)

6% less funds holding in top 10

Funds holding in top 10: 3533 (-2)

Holders
975
Holders Change
+66
Holders Change %
+7.26%
% of All Funds
11.86%
Holding in Top 10
33
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-5.71%
% of All Funds
0.4%
New
164
Increased
332
Reduced
346
Closed
85
Calls
$492M
Puts
$483M
Net Calls
+$9.09M
Net Calls Change
+$5.5M
Name Holding Trade Value Shares
Change
Change in
Stake
MAMU
101
Marathon Asset Management (UK)
United Kingdom
$30.7M -$3.17M -47,411 -9%
Voloridge Investment Management
102
Voloridge Investment Management
Florida
$30.2M +$31.4M +469,168 New
New York State Common Retirement Fund
103
New York State Common Retirement Fund
New York
$30M -$699K -10,448 -2%
Ameriprise
104
Ameriprise
Minnesota
$27.8M +$12.4M +184,966 +75%
Mawer Investment Management
105
Mawer Investment Management
Alberta, Canada
$27.6M -$2.07M -30,978 -7%
Qube Research & Technologies (QRT)
106
Qube Research & Technologies (QRT)
United Kingdom
$26.8M +$27.9M +416,986 New
MF
107
Milford Funds
$26.8M +$27.9M +416,730 New
Adage Capital Partners
108
Adage Capital Partners
Massachusetts
$25.9M -$214K -3,200 -0.8%
SAM
109
Storebrand Asset Management
Norway
$25.8M -$537K -8,026 -2%
BCM
110
Brooktree Capital Management
Michigan
$25.8M -$1.08M -16,138 -4%
ACM
111
Aquatic Capital Management
Illinois
$25.7M +$20.1M +300,826 +304%
PCM
112
Prana Capital Management
Connecticut
$25.3M +$5.67M +84,773 +27%
PCH
113
Polar Capital Holdings
United Kingdom
$25.1M -$3.77M -56,371 -13%
N
114
Natixis
France
$24.9M +$20.1M +300,495 +346%
State Board of Administration of Florida Retirement System
115
State Board of Administration of Florida Retirement System
Florida
$24.8M -$878K -13,110 -3%
SEI Investments
116
SEI Investments
Pennsylvania
$24.8M +$5.33M +79,685 +26%
SSA
117
Schonfeld Strategic Advisors
New York
$24.5M +$22.9M +341,535 +878%
GF
118
Gabelli Funds
New York
$23.5M -$1.05M -15,691 -4%
Credit Agricole
119
Credit Agricole
France
$22.7M +$2.39M +35,645 +11%
Universal-Beteiligungs- und Servicegesellschaft
120
Universal-Beteiligungs- und Servicegesellschaft
Germany
$22.3M -$85.8K -1,281 -0.4%
Connor, Clark & Lunn Investment Management (CC&L)
121
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$21.9M -$25.9M -387,367 -53%
Korea Investment Corp
122
Korea Investment Corp
South Korea
$21.7M +$4.36M +65,200 +24%
Aviva
123
Aviva
United Kingdom
$21.2M +$272K +4,070 +1%
JF
124
Jump Financial
Illinois
$21.2M +$7.76M +115,871 +54%
WC
125
Winmill & Co
New York
$21M