secwatch.observer — SEC 8-K summary
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Issuer:     MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)
CIK:        0001438472
Form:       8-K
Filed at:   2026-08-05T20:14:43+00:00
Accession:  0001438472-26-000040
Event type: earnings
Sentiment:  positive
Materiality: 0.85
Item codes: 2.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

MIAX Q2 net revenue record $141M (+35% YoY); adjusted EBITDA $77M (+57%); updates FY guidance
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- Q2 net revenue record $141.1M (+35% YoY); GAAP diluted EPS $0.40; adjusted diluted EPS $0.48.
- Adjusted EBITDA $76.8M (+57% YoY); margin expanded to 54% from 47%.
- Options segment net revenue $124.4M (+34%); average daily volume 11.0M contracts (+25% YoY); market share 16.5%.
- Recorded $22.5M litigation settlement charge in options segment; International net revenue $5.7M (+151%) from TISE acquisition.
- FY 2026 guidance: adjusted op ex $260-270M (down from $265-275M); D&A $35-39M (up); share-based comp $29-32M (up).

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1438472/000143847226000040/0001438472-26-000040-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1438472/000143847226000040/miax-20260805.htm
  HTML page:      https://secwatch.observer/filing/0001438472-26-000040

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