Every material Form 8-K MIAMI INTERNATIONAL HOLDINGS, INC. has filed with the SEC since July 21, 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
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.
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
Miami International Holdings reported second-quarter 2026 results for the period ended June 30, 2026, with net revenue rising 35% to $141.1 million and GAAP net income more than doubling to $44.2 million, helped by a $15.4 million income tax benefit. Operating income was nearly flat at $27.8 million because of a $30.0 million litigation settlement charge, and the company lowered its full-year 2026 adjusted operating expense guidance.
Net revenue rose 35% to $141.1 million from $104.7 million a year earlier, driven mainly by the options business.
GAAP diluted EPS was $0.40 versus $0.30; adjusted diluted EPS was $0.48, flat year over year.
Operating expenses included a $30.0 million litigation settlement charge; operating income was $27.8 million versus $27.3 million.
Full-year 2026 adjusted operating expense guidance was lowered to $260 million to $270 million from $265 million to $275 million.
On July 20, 2026, the U.S. District Court for the District of New Jersey dismissed with prejudice all claims and counterclaims in the long-running patent litigation between Miami International Holdings and Nasdaq. The parties have resolved all claims against each other, and the company states it can operate its business without a license or consent from Nasdaq on the matters Nasdaq asserted.
Court order of dismissal with prejudice entered July 20, 2026
Litigation began September 1, 2017, when Nasdaq filed suit against the company
In 2019, the PTAB invalidated six patents Nasdaq asserted against the company
Filing does not disclose any settlement payment or financial terms
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