MIAX

Miami International Holdings
MIAX

115 hedge funds and large institutions have $1.03B invested in Miami International Holdings in 2025 Q3 according to their latest regulatory filings, with 115 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

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New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $
Holders
115
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$11.5M
Puts
$7.25M
Net Calls
Net Calls Change

Top Buyers

1
+$132M
2
+$97.9M
3
+$55.7M
4
HKAM
Horizon Kinetics Asset Management
New York
+$55.7M
5
Alyeska Investment Group
Alyeska Investment Group
Illinois
+$51M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Susquehanna International Group
1
Susquehanna International Group
Pennsylvania
$132M
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$97.9M
Vanguard Group
3
Vanguard Group
Pennsylvania
$55.7M
HKAM
4
Horizon Kinetics Asset Management
New York
$55.7M
Alyeska Investment Group
5
Alyeska Investment Group
Illinois
$51M
Citadel Advisors
6
Citadel Advisors
Florida
$39.3M
JP Morgan Chase
7
JP Morgan Chase
New York
$32.7M
NRCM
8
North Reef Capital Management
California
$29.2M
BlackRock
9
BlackRock
New York
$28.5M
CIM
10
Caldwell Investment Management
Ontario, Canada
$27.1M
Adage Capital Partners
11
Adage Capital Partners
Massachusetts
$25.4M
Wellington Management Group
12
Wellington Management Group
Massachusetts
$23.5M
Morgan Stanley
13
Morgan Stanley
New York
$21M
Jane Street
14
Jane Street
New York
$19.7M
Invesco
15
Invesco
Georgia
$18.5M
Allspring Global Investments
16
Allspring Global Investments
North Carolina
$17.7M
Franklin Resources
17
Franklin Resources
California
$17.4M
T. Rowe Price Associates
18
T. Rowe Price Associates
Maryland
$16.1M
William Blair & Company
19
William Blair & Company
Illinois
$14.6M
IECM
20
Intrinsic Edge Capital Management
Illinois
$14M
Victory Capital Management
21
Victory Capital Management
Texas
$12.2M
SGM
22
Seven Grand Managers
New York
$12.1M
Lord, Abbett & Co
23
Lord, Abbett & Co
New Jersey
$12M
Massachusetts Financial Services
24
Massachusetts Financial Services
Massachusetts
$12M
GCM
25
Ghisallo Capital Management
Massachusetts
$11.1M
1
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