12:31 PM EDT, 08/14/2025 (MT Newswires) -- Miami International ( MIAX ) shares jumped 37% in recent Thursday trading after its debut on the New York Stock Exchange.

The company priced its initial public offering of 15 million common shares at $23 per share.

Underwriters have a 30-day option to purchase up to 2.3 million additional shares. The IPO is expected to close on Friday.

Price: 31.21, Change: +8.21, Percent Change: +35.70