secwatch.observer — SEC 8-K summary
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Issuer:     MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)
CIK:        0001438472
Form:       8-K
Filed at:   2025-11-26T23:59:59+00:00
Accession:  0001438472-25-000016
Event type: m_and_a
Sentiment:  positive
Materiality: 0.70
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

MIAX sells 90% of MIAXdx to Robinhood & Susquehanna; retains 10% stake
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- MIAX to sell 90% of MIAXdx to Robinhood Markets (NASDAQ:HOOD) in partnership with Susquehanna International Group.
- MIAX will retain the remaining 10% equity interest in MIAXdx, a CFTC-regulated DCM and DCO.
- Transaction expected to close in Q1 2026, subject to customary closing conditions and CFTC filings.
- CEO Thomas Gallagher cites expedited access to prediction markets and strategic alignment with industry leaders.
- No purchase price disclosed; MIAX's retained stake provides continued exposure to prediction markets.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1438472/000143847225000016/0001438472-25-000016-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1438472/000143847225000016/miax-20251125.htm
  HTML page:      https://secwatch.observer/filing/0001438472-25-000016

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer