secwatch.observer — SEC 8-K summary
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Issuer:     MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)
CIK:        0001438472
Form:       8-K
Filed at:   2026-01-21T23:59:59+00:00
Accession:  0001438472-26-000008
Event type: m_and_a
Sentiment:  positive
Materiality: 0.65
Item codes: 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

MIAX completes sale of 90% of MIAX Derivatives Exchange to Robinhood-Susquehanna JV
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- Sold 90% of MIAXdx equity to joint venture by Robinhood (HOOD) and Susquehanna International Group.
- MIAX retains 10% stake in MIAXdx, a CFTC-regulated DCM/DCO for fully collateralized futures and options.
- Transaction effective Jan 20, 2026; no purchase price or financial terms disclosed.
- CEO says sale unlocks shareholder value and allows focus on core exchange growth.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1438472/000143847226000008/0001438472-26-000008-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1438472/000143847226000008/miax-20260120.htm
  HTML page:      https://secwatch.observer/filing/0001438472-26-000008

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