Prices via Intrinio. Supplier and customer ties are extracted from SEC filings and carry the sentence they came from. Not investment advice.
Prices via Intrinio. Supplier and customer ties are extracted from SEC filings and carry the sentence they came from. Not investment advice.
Miami International Holdings, Inc.
Price, suppliers and customers from SEC filings, institutional ownership and the next report.
Security Brokers, Dealers & Flotation Companies
No intraday reading yet this session.
211 institutional managers report a position in Miami International Holdings, Inc. worth $2.7B between them, filed on form 13F for the quarter ending 2026-06-30. 37 of them hold 80% of it, the largest being Horizon Asset Management LLC at 10.75%.
186 more managers in the register
37 managers hold 80% of the $2.7B institutional base. The other 174 hold the rest.
Positions as filed with the SEC for the quarter ended Jun 30. A 13F is due 45 days after the quarter closes, so this register is 78 days old and does not move with the price above it.
MIAX (Miami International Holdings, Inc.) has 4 disclosed suppliers and 4 disclosed customers, strongest disclosure first.
Suppliers:
Customers:
Select a tie for the filing sentence that discloses it; select again to open the company. Lines are disclosed suppliers and customers, coloured by industry; the closer to the centre, the more the filings disclose. A dot is green or red by today’s move. Extended: satellites hang off single companies, not bundled sectors.
via Horizon Asset Management LLC, T. Rowe Price Investment Management, Inc., Adage Capital Partners GP, L.L.C. +8 more · 10.75% of MIAX, 13.75% of WHK
via Horizon Asset Management LLC, T. Rowe Price Investment Management, Inc., Balyasny Asset Management LLC +6 more · 10.75% of MIAX, 10.59% of WBI
via Horizon Asset Management LLC, T. Rowe Price Investment Management, Inc., Tocqueville Asset Management L.P. +4 more · 10.75% of MIAX, 20.31% of LB
via Horizon Asset Management LLC, T. Rowe Price Investment Management, Inc., MAD River Investors +1 more · 10.75% of MIAX, 15.23% of HE
via Horizon Asset Management LLC, Seven Grand Managers, LLC, Ghisallo Capital Management LLC +7 more · 10.75% of MIAX, 9.74% of EROK
via T. Rowe Price Investment Management, Inc., Franklin Resources Inc, Driehaus Capital Management LLC +10 more · 6.90% of MIAX, 8.64% of ARXS
Managers holding a meaningful stake in MIAX also hold this much of the other company’s institutional base. Managers who hold most of the companies we cover are excluded, because their overlap says nothing about this one in particular. This is how the two are held, not evidence that one moves the other.