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Equibles

MIAX

Miami International Holdings, Inc.
$40.84 +1.79 (+4.58%) At close · Jul 2
Market Cap
$3.88B
Shares
94,907,086

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 202
Total Value: $1,928,952,557
Total Shares: 49,561,998
Showing 1–100 of 209 holdings by value · page 1 of 3

Institutional Ownership Trend

4 quarters

Superinvestors Holding MIAX

All superinvestors →
George Soros $5,160,792

Holder Concentration

Across 202 13F filers
Top Holder
8.4%
Sep 2025 → Mar 2026 · range 8.4% – 13.5%
of institutional value
Top 5
30.5%
Sep 2025 → Mar 2026 · range 30.5% – 38.4%
of institutional value
Top 10
44.5%
Sep 2025 → Mar 2026 · range 44.5% – 53.7%
of institutional value
HHI
305
Sep 2025 → Mar 2026 · range 305 – 453
Broadly held
Showing 100 of 209
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mega T. Rowe Price Investment Management, Inc. $161,347,452 8.36% 4,145,618
Mid HORIZON KINETICS ASSET MANAGEMENT LLC $134,334,287 6.96% 3,451,549
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $128,293,786 6.65% 3,296,346
Mega BlackRock, Inc. $86,895,898 4.50% 2,232,680
Mega CITADEL ADVISORS LLC $62,574,797 3.24% 1,607,780
Mega Invesco Ltd. $61,688,312 3.20% 1,585,003
Large Alyeska Investment Group, L.P. $56,334,909 2.92% 1,447,454
Mega VANGUARD CAPITAL MANAGEMENT LLC $55,070,982 2.85% 1,414,979
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $48,533,201 2.52% 1,246,999
Mega JPMORGAN CHASE & CO $48,183,192 2.50% 1,238,006
Mega AMERICAN CENTURY COMPANIES INC $47,540,196 2.46% 1,221,485
Mega MORGAN STANLEY $44,639,523 2.31% 1,146,956
Large Allspring Global Investments Holdings, LLC $43,289,196 2.24% 1,112,261
Mid North Reef Capital Management LP $39,475,544 2.05% 1,014,274
Mid Ghisallo Capital Management LLC $38,920,000 2.02% 1,000,000
Mega BANK OF AMERICA CORP /DE/ Bank $35,062,326 1.82% 900,882
Mega TWO SIGMA INVESTMENTS, LP $34,783,504 1.80% 893,718
Large LORD, ABBETT & CO. LLC $33,497,938 1.74% 860,687
Mega GEODE CAPITAL MANAGEMENT, LLC $30,349,114 1.57% 779,782
Mega STATE STREET CORP $27,723,844 1.44% 712,329
Large BLAIR WILLIAM & CO/IL $25,912,196 1.34% 665,781
Small Caldwell Investment Management Ltd. $25,835,485 1.34% 663,810
Mega BNP PARIBAS ARBITRAGE, SA $22,279,987 1.16% 572,456
Mega FRANKLIN RESOURCES INC $22,113,331 1.15% 568,174
Mid SEVEN GRAND MANAGERS, LLC $21,406,000 1.11% 550,000
Large SEI INVESTMENTS CO $20,486,047 1.06% 526,363
Mega MILLENNIUM MANAGEMENT LLC $20,187,842 1.05% 518,701
Mega AMERIPRISE FINANCIAL INC $19,827,871 1.03% 509,452
Mid Clearstead Advisors, LLC $19,602,525 1.02% 503,662
Mega WELLINGTON MANAGEMENT GROUP LLP $17,313,599 0.90% 444,851
Mega GOLDMAN SACHS GROUP INC $16,591,907 0.86% 426,308
Mega UBS Group AG $16,478,921 0.85% 423,405
Large Driehaus Capital Management LLC $15,439,486 0.80% 396,698
Mega VICTORY CAPITAL MANAGEMENT INC $15,162,064 0.79% 389,570
Mid Optiver Holding B.V. $13,361,975 0.69% 343,319
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $13,283,746 0.69% 341,309
Mega D. E. Shaw & Co., Inc. $12,484,057 0.65% 320,762
Mid TOCQUEVILLE ASSET MANAGEMENT L.P. $12,148,294 0.63% 312,135
Mid ROYCE & ASSOCIATES LP $12,037,021 0.62% 309,276
Mid Burkehill Global Management, LP $11,286,800 0.59% 290,000
Mid Delta Global Management LP $11,195,688 0.58% 287,659
Small INTRINSIC EDGE CAPITAL MANAGEMENT LLC $10,742,659 0.56% 276,019
Mega BARCLAYS PLC $10,673,692 0.55% 274,247
Mid Penn Capital Management Company, LLC $10,657,619 0.55% 273,834
Large RENAISSANCE TECHNOLOGIES LLC $10,566,780 0.55% 271,500
Large Woodline Partners LP $10,162,440 0.53% 261,111
Large TUDOR INVESTMENT CORP ET AL $10,110,053 0.52% 259,765
Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Pension $9,340,800 0.48% 240,000
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $9,236,066 0.48% 237,309
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $9,235,716 0.48% 237,300
Mega NORTHERN TRUST CORP Bank $9,106,031 0.47% 233,968
Mega Nuveen, LLC $9,025,857 0.47% 231,908
Large Trexquant Investment LP $8,389,167 0.43% 215,549
Mega VANGUARD FIDUCIARY TRUST CO Bank $7,884,724 0.41% 202,588
Large FEDERATED HERMES, INC. $7,828,563 0.41% 201,145
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $6,967,575 0.36% 179,023
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $6,382,140 0.33% 163,981
Mid AXIOM INVESTORS LLC /DE $6,354,935 0.33% 163,282
Mega PRICE T ROWE ASSOCIATES INC /MD/ $6,195,518 0.32% 159,186
Large Schonfeld Strategic Advisors LLC $6,137,022 0.32% 157,683
Mid OCCUDO QUANTITATIVE STRATEGIES LP $5,903,229 0.31% 151,676
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $5,834,263 0.30% 149,904
Mid SOROS FUND MANAGEMENT LLC $5,160,792 0.27% 132,600
Mid Portolan Capital Management, LLC $5,013,635 0.26% 128,819
Mid Prana Capital Management, LP $4,800,898 0.25% 123,353
Large MARSHALL WACE, LLP $4,772,330 0.25% 122,619
Mid Aquatic Capital Management LLC $4,652,029 0.24% 119,528
Mega RAYMOND JAMES FINANCIAL INC $4,647,785 0.24% 119,419
Large Polar Capital Holdings Plc $4,618,792 0.24% 118,674
Large TRUIST FINANCIAL CORP $4,583,491 0.24% 117,767
Large KING LUTHER CAPITAL MANAGEMENT CORP $4,564,615 0.24% 117,282
Mega TD Asset Management Inc $4,127,076 0.21% 106,040
Mega CITIGROUP INC $4,102,985 0.21% 105,421
Mid Caprock Group, LLC $3,914,768 0.20% 100,585
Mid Quantbot Technologies LP $3,736,670 0.19% 96,009
Small MBL Wealth, LLC $3,384,483 0.18% 86,960
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $3,332,369 0.17% 85,621
Large Qube Research & Technologies Ltd $3,209,888 0.17% 82,474
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $3,191,440 0.17% 82,000
Small MAD RIVER INVESTORS $3,162,250 0.16% 81,250
Small WEXFORD CAPITAL LP $3,129,168 0.16% 80,400
Small Coastal Bridge Advisors, LLC $3,036,382 0.16% 78,016
Mega Bank of New York Mellon Corp Bank $3,035,368 0.16% 77,990
Small SPIREPOINT PRIVATE CLIENT, LLC $2,680,926 0.14% 68,883
Small Bullseye Asset Management LLC $2,565,917 0.13% 65,928
Mega WELLS FARGO & COMPANY/MN $2,381,357 0.12% 61,186
Small one8zero8, LLC $2,298,809 0.12% 59,065
Large Quantinno Capital Management LP $2,159,554 0.11% 55,487
Small G2 Investment Partners Management LLC $2,047,192 0.11% 52,600
Mid Engineers Gate Manager LP $2,013,565 0.10% 51,736
Large Corient Private Wealth LLC $2,001,655 0.10% 51,430
Large CREDIT AGRICOLE S A $1,984,997 0.10% 51,002
Small Atlas Brown,Inc. $1,983,908 0.10% 50,974
Mid Covalis Capital LLP $1,946,000 0.10% 50,000
Small C2P Capital Advisory Group, LLC d.b.a. Prosperity Capital Advisors $1,827,216 0.09% 46,948
Mega CITADEL ADVISORS LLC $1,821,456 0.09% 46,800
Large OSAIC HOLDINGS, INC. $1,749,141 0.09% 44,942
Large Squarepoint Ops LLC $1,565,440 0.08% 40,222
Mid Entropy Technologies, LP $1,559,757 0.08% 40,076
Mid SIG BROKERAGE, LP Broker-Dealer $1,556,800 0.08% 40,000
Key facts CIK 1438472 CUSIP 59356Q108 13F (30d) 1 filings 1 filers Visit website Investor relations

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