Miami International Holdings, also known as MIAX, raised over $345 million in its IPO Wall Street debut. Shares priced at $23 rose over 33% on the first day and are listed on NYSE as MIAX. CEO Thomas Gallagher rang the opening bell on the NYSE floor. MIAX is a technology-driven leader in financial marketplaces, offering U.S. options, equities, futures, and listings. Total options volume rose 42.9% year-over-year, with a market share of 16.2%. The exchange trades options on ETFs and plans to open a new trading floor in Miami in September.

Read more at Yahoo Finance: MIAX goes public on NYSE with Miami trading floor expansion plans scheduled for September