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AI brief of an SEC Form 8-K · MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

MIAX Q3 net revenue rose 20% to $131.0 million; GAAP diluted EPS $0.47

Positive Impact 4 of 5 earnings Written later

Miami International Holdings (MIAX) reported third-quarter 2026 results, with net revenue up 20% to $131.0 million and net income of $52.5 million, compared with a net loss of $102.1 million a year earlier. The company also lowered its 2026 adjusted operating expense guidance to $254 million to $257 million, from $260 million to $270 million, which lowers expected costs for shareholders.

Key points

  • Net revenue rose 20%, or $21.5 million, to $131.0 million, driven mainly by the options business
  • GAAP net income was $52.5 million versus a net loss of $102.1 million; diluted EPS was $0.47 versus $(1.46)
  • Adjusted EBITDA rose 47% to $70.8 million, with margin at 54% versus 44%
  • 2026 adjusted operating expense guidance lowered to $254 million to $257 million from $260 million to $270 million

The filing

CompanyMIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)
Form8-K, current report
Filed with the SECOct 29, 2026, 4:15 PM ET
Accession number0001438472-26-000044

Items reported: 2.02 Results of Operations

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 10:08 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on October 29, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.