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MIAMI INTL (MIAX)
NYSE
$42.58-$0.02 (-0.04%)
Price as of Aug 21, 2026 7:30 PM EDT- $4.2BMarket Cap
- 27.06%1-Year Change
- Capital MarketsIndustry
MIAMI INTL (MIAX)
$42.58-$0.02 (-0.04%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
HORIZON KINETICS ASSET MANAGEMENT LLC | 8.10% | 7.8M | +4.4M (+55.99%) | Jun 30, 2026 |
BLACKROCK, INC. | 5.24% | 5.1M | +2.8M (+55.98%) | Jun 30, 2026 |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 5.20% | 5.0M | +887,352 (+17.63%) | Jun 30, 2026 |
VANGUARD PORTFOLIO MANAGEMENT LLC | 3.91% | 3.8M | +2.4M (+63.69%) | Jun 30, 2026 |
N/A | 3.91% | 3.8M | +2.4M (+63.69%) | Jun 30, 2026 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP | 3.47% | 3.4M | +58,697 (+1.75%) | Jun 30, 2026 |
VANGUARD CAPITAL MANAGEMENT LLC | 3.27% | 3.2M | +1.8M (+55.30%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 2.70% | 2.6M | +1.5M (+55.84%) | Mar 31, 2026 |
T. Rowe Price Small-Cap Stock Fund, Inc. | 1.46% | 1.4M | +350,104 (+24.86%) | Mar 31, 2026 |
Listed Funds Trust | 0.96% | 928,605 | 0 (0.00%) | May 31, 2026 |
KINETICS PORTFOLIOS TRUST | 0.90% | 867,072 | +462,844 (+53.38%) | Jun 30, 2026 |
T. Rowe Price Equity Funds, Inc. | 0.79% | 765,186 | +193,773 (+25.32%) | Mar 31, 2026 |
AMERICAN CENTURY MUTUAL FUNDS, INC. | 0.75% | 729,898 | -14,580 (-2.00%) | Apr 30, 2026 |
JPMorgan Trust I | 0.74% | 717,809 | 0 (0.00%) | Apr 30, 2026 |
Current Ownership Distribution
- Institutions184.4M (83.58%)
- Mutual Funds25.4M (11.52%)
- Insiders10.8M (4.90%)
- Other0 (0.00%)
Insider Transactions
- 4.90% (10.8M)Current InsiderOwnership (%, shares)
- 1Number of InsiderBuying (last 12 months)
- $581.0MAmount of InsiderBuying (last 12 months)
- 11Number of InsiderSelling (last 12 months)
- $517.9MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Gallagher Thomas P. Chairman & CEO | Sell | Aug 19, 2026 | $6.2M | 149,700 | $41.13 | 1.4M |
Comly Barbara J. EVP, GC & Corporate Secretary | In Kind | Aug 18, 2026 | $1.8M | 43,420 | $42.41 | 839,564 |
Gallagher Thomas P. Chairman & CEO | In Kind | Aug 18, 2026 | $6.4M | 150,300 | $42.41 | 1.6M |
Emmons Lance EVP and CFO | Sell | Aug 17, 2026 | $1.5M | 35,000 | $42.83 | 86,538 |
Teekell Judson Gray | Sell | Aug 04, 2026 | $137,370.00 | 3,000 | $45.79 | 72,251 |
Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Exempt | Aug 04, 2026 | $0.00 | 11,000 | $0.00 | 77,000 |
Schafer Douglas M. JR EVP and CIO | Exempt | Aug 04, 2026 | $0.00 | 48,000 | $0.00 | 43,334 |
Eckert Kurt M. | Exempt | Aug 04, 2026 | $0.00 | 1,063 | $0.00 | 0 |
Schafer Douglas M. JR EVP and CIO | Exempt | Aug 04, 2026 | $576,000.00 | 48,000 | $12.00 | 435,414 |
Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Exempt | Aug 04, 2026 | $132,000.00 | 11,000 | $12.00 | 130,601 |
Schafer Douglas M. JR EVP and CIO | Sell | Aug 04, 2026 | $2.2M | 48,000 | $45.71 | 387,414 |
Jayabalan Harish EVP, CISO and CRO | Exempt | Aug 04, 2026 | $0.00 | 14,168 | $0.00 | 0 |
Comly Barbara J. EVP, GC & Corporate Secretary | Exempt | Aug 04, 2026 | $0.00 | 44,445 | $0.00 | 88,889 |
Deitzel Edward EVP, CRO, CCO MIAX Exchanges | Sell | Aug 04, 2026 | $503,580.00 | 11,000 | $45.78 | 119,601 |
Comly Barbara J. EVP, GC & Corporate Secretary | Exempt | Aug 04, 2026 | $533,340.00 | 44,445 | $12.00 | 927,429 |
Eckert Kurt M. | Exempt | Aug 04, 2026 | $12,756.00 | 1,063 | $12.00 | 150,675 |
Comly Barbara J. EVP, GC & Corporate Secretary | Sell | Aug 04, 2026 | $2.0M | 44,445 | $45.69 | 882,984 |
Jayabalan Harish EVP, CISO and CRO | Exempt | Aug 04, 2026 | $0.00 | 5,832 | $0.00 | 17,598 |
Eckert Kurt M. | Sell | Aug 04, 2026 | $48,685.40 | 1,063 | $45.80 | 149,612 |
Jayabalan Harish EVP, CISO and CRO | Exempt | Aug 04, 2026 | $170,016.00 | 14,168 | $12.00 | 92,233 |
Jayabalan Harish EVP, CISO and CRO | Exempt | Aug 04, 2026 | $88,763.04 | 5,832 | $15.22 | 98,065 |
Jayabalan Harish EVP, CISO and CRO | Sell | Aug 04, 2026 | $918,000.00 | 20,000 | $45.90 | 78,065 |
Schwarzkopf Cynthia | Exempt | Jul 15, 2026 | $0.00 | 5,000 | $0.00 | 16,916 |
Schwarzkopf Cynthia | Exempt | Jul 15, 2026 | $60,000.00 | 5,000 | $12.00 | 93,545 |
Schwarzkopf Cynthia | Sell | Jul 15, 2026 | $210,000.00 | 5,000 | $42.00 | 88,545 |
Comly Barbara J. EVP, GC & Corporate Secretary | Exempt | Jul 13, 2026 | $0.00 | 28,000 | $0.00 | 0 |
Gallagher Thomas P. Chairman & CEO | Exempt | Jul 13, 2026 | $0.00 | 70,000 | $0.00 | 0 |
Comly Barbara J. EVP, GC & Corporate Secretary | Exempt | Jul 13, 2026 | $336,000.00 | 28,000 | $12.00 | 910,984 |
Gallagher Thomas P. Chairman & CEO | Exempt | Jul 13, 2026 | $840,000.00 | 70,000 | $12.00 | 1.8M |
Comly Barbara J. EVP, GC & Corporate Secretary | Sell | Jul 13, 2026 | $1.2M | 28,000 | $41.98 | 882,984 |