---
schema_version: "secwatch.filing_event.v1"
accession: "0001438472-26-000040"
form_type: "8-K"
ticker: "MIAX"
cik: "0001438472"
company_name: "MIAMI INTERNATIONAL HOLDINGS, INC."
filed_at: "2026-08-05T20:14:43+00:00"
generated_at: "2026-08-05T20:16:37.859572+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# MIAX Q2 net revenue record $141M (+35% YoY); adjusted EBITDA $77M (+57%); updates FY guidance

## Summary
- 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).

## SEC filing metadata
- accession: 0001438472-26-000040
- form_type: 8-K
- ticker: MIAX
- cik: 0001438472
- company_name: MIAMI INTERNATIONAL HOLDINGS, INC.
- filed_at: 2026-08-05T20:14:43+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1438472/000143847226000040/0001438472-26-000040-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1438472/000143847226000040/miax-20260805.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001438472-26-000040
- JSON: https://secwatch.observer/filing/0001438472-26-000040.json
- Plain text: https://secwatch.observer/filing/0001438472-26-000040.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.