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Miami International Holdings Ownership | Who Owns Miami International Holdings?

OverviewForecastRevenueFinancialsChartTranscripts

Miami International Holdings Ownership Summary

Miami International Holdings is owned by 23.68% institutional investors, 11.42% insiders, and 64.89% retail investors. T. rowe price investment management is the largest institutional shareholder, holding 5.94% of MIAX shares.

MIAX Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockMiami International Holdings23.68%11.42%64.89%
IndustryCapital Markets Stocks28.94%14.29%56.77%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
T. rowe price investment management4.15M5.94%$161.35M
Horizon kinetics asset management3.45M4.94%$134.33M
Susquehanna group, llp3.30M4.72%$128.29M
Blackrock funding, inc. /de2.23M3.20%$86.90M
Vanguard group1.93M2.75%$85.58M
Citadel advisors1.61M2.30%$62.57M
Invesco1.59M2.27%$61.69M
Alyeska investment group1.45M2.07%$56.33M
Adage capital partners gp1.25M1.79%$48.53M
Jpmorgan chase1.24M1.77%$46.43M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Caldwell investment management663.81K9.77%$24.92M
Intrinsic edge capital management322.52K2.55%$14.31M
Atlas wealth partners37.71K1.51%$1.47M
Bullseye asset management65.93K1.49%$2.57M
Horizon kinetics asset management3.45M1.46%$134.33M
Seven grand managers550.00K1.43%$21.41M
North reef capital management lp1.01M1.36%$39.48M
Mad river investors81.25K1.14%$3.16M
Ghisallo capital management1.00M1.07%$38.92M
Delta global management lp287.66K0.92%$11.20M

Top Buyers

HolderShares% AssetsChange
Horizon kinetics asset management3.45M1.46%1.63M
T. rowe price investment management4.15M0.11%1.12M
Citadel advisors1.61M0.01%988.20K
Morgan stanley1.15M0.00%926.08K
Two sigma investments, lp893.72K0.03%753.39K

Top Sellers

HolderShares% AssetsChange
Jane street group---638.05K
Jump financial18.97K0.01%-266.30K
North reef capital management lp1.01M1.36%-250.73K
American century companies1.22M0.02%-226.81K
Monashee investment management---175.00K

New Positions

HolderShares% AssetsChangeValue
Clearstead advisors503.66K0.18%503.66K$19.60M
Norges bank277.20K0.00%277.20K$12.30M
Trexquant investment lp215.55K0.06%215.55K$8.39M
Gillson capital lp206.90K0.72%206.90K$8.33M
Vanguard fiduciary trust202.59K0.00%202.59K$7.88M

Sold Out

HolderChange
Marquette asset management-18.00
Larson financial group-25.00
Bare financial services-27.00
Bellevue asset management-40.00
Bell investment advisors-71.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 202588-16.98%16,609,099-27.80%232.20%75-25.00%9-
Sep 30, 202533-6,876,749-9-33---

Recent Insider Transactions

DateNameRoleActivityValue
May 05, 2026Gallagher Thomas P. Chairman & CEOSell$755.75K
May 04, 2026Gallagher Thomas P. Chairman & CEOSell$2.56M
May 04, 2026Deitzel Edward EVP, CRO, CCO MIAX ExchangesSell$520.08K
May 04, 2026Brown Shelly EVP, Chief Strategy OfficerSell$756.48K
May 04, 2026Teekell Judson Gray-Sell$141.90K

Insider Transactions Trends

DateBuySell
2026 Q2-19
2026 Q136

MIAX Ownership FAQ

Who Owns Miami International Holdings?

Miami International Holdings shareholders are primarily institutional investors at 23.68%, followed by 11.42% insiders and 64.90% retail investors. The average institutional ownership in Miami International Holdings's industry, Capital Markets Stocks, is 28.94%, which Miami International Holdings falls below.

Who owns the most shares of Miami International Holdings?

Miami International Holdings’s largest shareholders are T. rowe price investment management (4.15M shares, 5.94%), Horizon kinetics asset management (3.45M shares, 4.94%), and Susquehanna group, llp (3.3M shares, 4.72%). Together, they hold 15.60% of Miami International Holdings’s total shares outstanding.

Does Blackrock own Miami International Holdings?

BlackRock is not among the top 10 institutional shareholders of Miami International Holdings.

Who is Miami International Holdings’s biggest shareholder by percentage of total assets invested?

Caldwell investment management is Miami International Holdings’s biggest shareholder by percentage of total assets invested, with 9.77% of its assets in 663.81K Miami International Holdings shares, valued at 24.92M$.

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