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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 78.52% institutional investors, 9.74% insiders, and 11.74% retail investors. Horizon kinetics asset management is the largest institutional shareholder, holding 8.54% of MIAX shares. Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund, with 2.80% of its assets in Miami International Holdings shares.

MIAX Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockMiami International Holdings78.52%9.74%11.74%
SectorFinancial Services Stocks 736.16%13.84%-650.00%
IndustryCapital Markets Stocks41.45%17.30%41.25%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Horizon kinetics asset management7.84M8.54%$291.42M
Blackrock funding, inc. /de5.07M5.53%$188.47M
T. rowe price investment management5.03M5.48%$187.03M
Susquehanna group, llp3.36M3.65%$124.67M
Vanguard capital management3.17M3.45%$117.64M
Vanguard group1.93M2.75%$85.58M
Invesco2.02M2.20%$75.09M
Blair william & co/il1.77M1.93%$65.75M
Balyasny asset management1.68M1.83%$62.54M
American century companies1.59M1.73%$58.98M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Caldwell investment management600.00K14.63%$22.28M
York gp230.73K6.79%$8.57M
Mad river investors289.00K4.01%$10.74M
Horizon kinetics asset management7.84M3.30%$291.42M
Hmv wealth advisors137.96K2.00%$5.13M
Bullseye asset management98.17K1.85%$3.65M
Philadelphia financial management of san francisco223.72K1.68%$8.31M
Atlas wealth partners38.53K1.56%$1.43M
One charles private wealth services118.42K1.01%$4.40M
Seven grand managers550.00K0.82%$20.44M

Top Buyers

HolderShares% AssetsChange
Horizon kinetics asset management7.84M3.30%4.39M
Blackrock funding, inc. /de5.07M0.00%2.84M
Vanguard capital management3.17M0.00%1.75M
Balyasny asset management1.68M0.08%1.68M
Blair william & co/il1.77M0.17%1.10M

Top Sellers

HolderShares% AssetsChange
Citadel advisors---1.61M
North reef capital management lp251.35K0.36%-762.92K
Jane street group---638.05K
Alyeska investment group848.75K0.08%-598.70K
Ghisallo capital management500.00K0.36%-500.00K

New Positions

HolderShares% AssetsChangeValue
Balyasny asset management1.68M0.08%1.68M$62.54M
Westfield capital management co lp700.74K0.09%700.74K$26.04M
Sixth street partners management company373.54K0.00%373.54K$13.88M
Assenagon asset management297.83K0.01%297.83K$11.07M
Nearwater capital markets279.00K0.18%279.00K$10.37M

Sold Out

HolderChange
Central trust-7.00
Ifp advisors-8.00
Mai capital management-10.00
Marquette asset management-18.00
Larson financial group-25.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Jun 30, 20262174.33%72,080,10643.55%781.52%143-12.80%4884.62%
Mar 31, 202678-52.73%9,597,920-74.40%130.48%68-47.29%6-72.73%
Dec 31, 202588-16.98%16,609,099-27.80%232.20%75-25.00%9-
Sep 30, 202533-6,876,749-9-33---

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Vanguard Morn Total Stk Mkt Idx Investor2.71M2.80%1.67M
Vanguard Total Stock Mkt Idx Inv2.71M2.80%1.67M
Vanguard Small Cap Index1.96M2.02%1.21M
iShares Russell 2000 ETF1.95M2.02%-34.66K
T. Rowe Price US Small-Cap Core Equity1.46M1.51%53.75K
T. Rowe Price Small-Cap Stock1.46M1.51%54.76K
Vanguard Morn Small Cap Value Index1.24M1.28%760.77K
Vanguard Small Cap Value Index Inv1.24M1.28%760.77K
American Century Small Cap Growth Inv969.54K1.00%239.65K
American Century U.S. Small Cap Growth969.54K1.00%239.65K

Recent Insider Transactions

DateNameRoleActivityValue
Aug 17, 2026Schwarzkopf Cynthia-Sell$214.25K
Aug 17, 2026Emmons Lance EVP and CFOSell$1.50M
Aug 04, 2026Eckert Kurt M.-Sell$48.69K
Aug 04, 2026Teekell Judson Gray-Sell$137.37K
Aug 04, 2026Jayabalan Harish EVP, CISO and CROSell$918.00K

Insider Transactions Trends

DateBuySell
2026 Q3-21
2026 Q2-31
2026 Q136

MIAX Ownership FAQ

Who Owns Miami International Holdings?

Miami International Holdings shareholders are primarily institutional investors at 78.52%, followed by 9.74% insiders and 11.74% retail investors. The average institutional ownership in Miami International Holdings's industry, Capital Markets Stocks, is 41.45%, which Miami International Holdings exceeds.

Who owns the most shares of Miami International Holdings?

Miami International Holdings’s largest shareholders are Horizon kinetics asset management (7.84M shares, 8.54%), Blackrock funding, inc. /de (5.07M shares, 5.53%), and T. rowe price investment management (5.03M shares, 5.48%). Together, they hold 19.55% 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 14.63% of its assets in 600K Miami International Holdings shares, valued at 22.28M$.

Who is the top mutual fund holder of Miami International Holdings shares?

Vanguard Morn Total Stk Mkt Idx Investor is the top mutual fund holder of Miami International Holdings shares, with 2.80% of its total shares outstanding invested in 2.71M Miami International Holdings shares.

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