MIAMI INTERNATIONAL HOLDINGS, INC.

MIAXNYSE

$33.01-0.74 (-2.19%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

MIAMI INTERNATIONAL HOLDINGS, INC. price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (-19.5%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Horizon Kinetics Asset Management LLC	7.95%	$291M	3.30%	Not reported
BlackRock, Inc.	5.14%	$188M	0.00%	Not reported
T. Rowe Price Investment Management, Inc.	5.10%	$187M	0.12%	Add 21.40%
Vanguard Portfolio Management LLC	3.84%	$141M	0.01%	Not reported
Susquehanna International Group, LLP	3.40%	$125M	0.01%	Not reported
Vanguard Capital Management LLC	3.21%	$118M	0.00%	Not reported
Invesco Ltd.	2.05%	$75.1M	0.01%	Not reported
J Digital 6 LLC	1.83%	$67.2M	39.72%	New Not reported
Blair William & Co	1.79%	$65.8M	0.17%	Add 165.77%
Balyasny Asset Management L.P.	1.71%	$62.5M	0.08%	Not reported
American Century Companies Inc	1.61%	$59M	0.03%	Not reported
State Street Corp	1.45%	$53.2M	0.00%	Not reported
JPMorgan Chase & Co	1.45%	$52.7M	0.00%	Not reported
Geode Capital Management, LLC	1.42%	$51.9M	0.00%	Not reported
Adage Capital Partners GP, L.L.C.	1.16%	$42.5M	0.06%	Reduce 8.27%
Healthcare of Ontario Pension Plan Trust Fund	1.05%	$38.6M	0.05%	Add 333.10%
Lord, Abbett & Co. LLC	1.02%	$37.2M	0.11%	Add 16.29%
Morgan Stanley	0.96%	$35.3M	0.00%	Not reported
Two Sigma Investments, LP	0.90%	$33M	0.02%	Not reported
Bank of America Corp	0.87%	$31.8M	0.00%	Not reported
Alyeska Investment Group, L.P.	0.86%	$31.5M	0.08%	Not reported
Walleye Capital LLC	0.74%	$27.1M	0.10%	Not reported
Westfield Capital Management Co LP	0.71%	$26M	0.09%	New Not reported
NewEdge Advisors, LLC	0.69%	$25.3M	0.08%	Not reported
Nuveen, LLC	0.68%	$24.8M	0.01%	Not reported
Caldwell Investment Management Ltd.	0.61%	$22.3M	14.63%	Reduce 9.61%
Assenagon Asset Management S.A.	0.60%	$22.1M	0.01%	Not reported
UBS Group AG	0.58%	$21.1M	0.00%	Not reported
Driehaus Capital Management LLC	0.57%	$21M	0.12%	Add 42.69%
Northern Trust Corp	0.57%	$20.9M	0.00%	Not reported
Ameriprise Financial Inc	0.57%	$20.8M	0.00%	Not reported
Seven Grand Managers, LLC	0.56%	$20.4M	0.82%	Not reported
Ghisallo Capital Management LLC	0.51%	$18.6M	0.36%	Not reported
Clearstead Advisors, LLC	0.48%	$17.6M	0.17%	Not reported
Royce & Associates LP	0.46%	$16.8M	0.14%	Not reported
Victory Capital Management Inc	0.43%	$15.9M	0.01%	Not reported
Massachusetts Financial Services Co	0.41%	$15.1M	0.00%	Add 19.03%
Goldman Sachs Group Inc	0.41%	$14.9M	0.00%	Not reported
BNP Paribas Financial Markets	0.40%	$14.7M	0.01%	Not reported
Charles Schwab Investment Management Inc	0.38%	$13.9M	0.00%	Not reported
D. E. Shaw & Co., Inc.	0.36%	$13.2M	0.01%	Not reported
Tocqueville Asset Management L.P.	0.34%	$12.6M	0.17%	Add 8.36%
Vanguard Fiduciary Trust Co	0.32%	$11.7M	0.00%	Not reported
Sei Investments Co	0.31%	$11.4M	0.01%	Not reported
Barclays PLC	0.30%	$11M	0.00%	Not reported
Burkehill Global Management, LP	0.29%	$10.8M	0.39%	Not reported
Mad River Investors	0.29%	$10.7M	4.01%	Add 255.69%
Marshall Wace, LLP	0.29%	$10.7M	0.01%	Not reported
Langdon Equity Partners	0.29%	$10.5M	5.87%	New Not reported
Nearwater Capital Markets, Ltd	0.28%	$10.4M	0.18%	New Not reported

50 of 193 holders

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