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MIAX · Miami International Holdings, Inc.

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$43.87 -0.17 (-0.37%)
Market Cap
$4.29B
Shares
99.23M

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.

Holders: 211
Total Value: $2,698,226,676
Total Shares: 72,611,071

Institutional Ownership Trend

4 quarters

Holder Concentration

Across 211 13F filers · Δ vs Mar 31, 2026
Top Holder
10.8%
Sep 2025 → Jun 2026 · range 8.6% – 13.9%
+2.2 pts
Top 5
35.2%
Sep 2025 → Jun 2026 · range 30.5% – 39.7%
+3.6 pts
Top 10
49.5%
Sep 2025 → Jun 2026 · range 45.9% – 55.5%
+3.7 pts
HHI
359
Sep 2025 → Jun 2026 · range 318 – 478
Broadly held+41

Quarterly Activity

vs Mar 31, 2026
New
55
Increased
88
Decreased
48
Sold Out
41
Unchanged
20
Holder count: +14
Institutional value: +44.5%
Shares held: +51.3%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 218
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1438472 CUSIP 59356Q108 13F (30d) 194 filings 191 filers Visit website Investor relations