Group 1 - Miami International Holdings (MIAX.US) announced its IPO pricing terms, issuing 15 million shares at $23 each, raising $345 million, which is above the expected range of $19 to $21 [1] - The fully diluted market capitalization of Miami International Holdings is $2.3 billion based on the current pricing [1] - MIAX common stock is set to begin trading on the New York Stock Exchange under the ticker "MIAX" on August 14 [1] Group 2 - Founded in 2007, Miami International Holdings operates four U.S. options exchanges and provides a diversified market ecosystem through proprietary trading technology [1] - The average daily trading volume for U.S. options on MIAX exchanges was 8.7 million contracts for the six-month period ending June 30, 2025, compared to 6.5 million contracts in the same period of 2024 [1] Group 3 - The IPO is underwritten by a consortium of banks including JPMorgan, Morgan Stanley, Piper Sandler, Keefe Bruyette Woods, Raymond James, William Blair, and Rosenblatt Securities [2]