Miami International Holdings, INC Schedule 13D activist filings

Horizon Kinetics Asset Management LLC has filed an amendment to its Schedule 13D, reporting beneficial ownership of 7,400,316 shares, representing 7.8% of Miami International Holdings, Inc.'s common stock.

Horizon Kinetics Asset Management LLC has increased its beneficial ownership in Miami International Holdings, Inc. to 12.2%, coinciding with the election of a Horizon Kinetics representative to the company's Board of Directors.

Horizon Kinetics Asset Management LLC has filed an amendment to its Schedule 13D, reporting beneficial ownership of 12.1% of Miami International Holdings, Inc. common stock, and noting the passing of director Murray Stahl.

Horizon Kinetics Asset Management LLC has increased its beneficial ownership in Miami International Holdings, Inc. to 11.7%, primarily for investment purposes.

Thomas P. Gallagher and Gallagher Investments LLC have filed an exit Schedule 13D amendment, reporting their beneficial ownership in Miami International Holdings, Inc. has fallen below the 5% threshold.

Miami International Holdings, Inc. CEO Thomas P. Gallagher and Gallagher Investments LLC disclose significant beneficial ownership in the company's common stock.

Horizon Kinetics Asset Management LLC has disclosed a 10.7% beneficial ownership stake in Miami International Holdings, Inc., primarily for investment purposes.