Quantinno Capital Management LP Purchases New Position in Miami International Holdings, Inc. $MIAX

Posted by Brenda Bartman on Aug 11th, 2026

Quantinno Capital Management LP purchased a new stake in Miami International Holdings, Inc. (NYSE:MIAX – Free Report) during the first quarter, according to its most recent 13F filing with the Securities & Exchange Commission. The fund purchased 55,487 shares of the company’s stock, valued at approximately $2,160,000. Quantinno Capital Management LP owned approximately 0.06% of Miami International as of its most recent SEC filing.

Other hedge funds also recently modified their holdings of the company. Vanguard Group Inc. bought a new position in shares of Miami International in the third quarter valued at approximately $55,660,000. Alyeska Investment Group L.P. bought a new stake in Miami International during the 3rd quarter worth approximately $50,959,000. Invesco Ltd. increased its holdings in Miami International by 178.8% during the 4th quarter. Invesco Ltd. now owns 1,278,966 shares of the company’s stock valued at $56,761,000 after purchasing an additional 820,246 shares in the last quarter. T. Rowe Price Investment Management Inc. raised its position in Miami International by 24.5% in the 4th quarter. T. Rowe Price Investment Management Inc. now owns 3,025,712 shares of the company’s stock valued at $134,282,000 after purchasing an additional 595,096 shares during the last quarter. Finally, Wellington Management Group LLP acquired a new position in Miami International in the third quarter worth $23,476,000.

Insider Buying and Selling

In other Miami International news, EVP Douglas M. Schafer, Jr. sold 48,000 shares of the firm’s stock in a transaction dated Tuesday, June 2nd. The stock was sold at an average price of $42.84, for a total transaction of $2,056,320.00. Following the transaction, the executive vice president owned 396,681 shares in the company, valued at approximately $16,993,814.04. This trade represents a 10.79% decrease in their ownership of the stock. The sale was disclosed in a filing with the Securities & Exchange Commission, which is accessible through the SEC website. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. Also, CEO Thomas P. Gallagher sold 70,000 shares of the business’s stock in a transaction dated Tuesday, June 2nd. The stock was sold at an average price of $42.36, for a total value of $2,965,200.00. Following the transaction, the chief executive officer owned 1,723,275 shares of the company’s stock, valued at $72,997,929. The trade was a 3.90% decrease in their ownership of the stock. The disclosure for this sale is available in the SEC filing. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. Insiders have sold 682,508 shares of company stock valued at $29,673,638 over the last 90 days. Company insiders own 15.60% of the company’s stock.

Wall Street Analysts Forecast Growth

Several analysts have recently commented on MIAX shares. Rosenblatt Securities increased their target price on Miami International from $61.00 to $62.00 and gave the stock a “buy” rating in a report on Thursday, August 6th. Zacks Research downgraded shares of Miami International from a “strong-buy” rating to a “hold” rating in a research report on Tuesday, June 23rd. Keefe, Bruyette & Woods increased their price objective on shares of Miami International from $46.00 to $48.00 and gave the stock a “market perform” rating in a report on Friday. Morgan Stanley boosted their target price on shares of Miami International from $50.00 to $53.00 and gave the stock an “overweight” rating in a research note on Friday, July 10th. Finally, Wall Street Zen lowered shares of Miami International from a “buy” rating to a “hold” rating in a research report on Sunday, May 17th. Four analysts have rated the stock with a Buy rating and five have issued a Hold rating to the company’s stock. According to MarketBeat.com, the stock currently has an average rating of “Hold” and a consensus target price of $52.00.

View Our Latest Stock Report on MIAX

Miami International Price Performance

Shares of NYSE:MIAX opened at $43.62 on Tuesday. The stock has a market cap of $4.14 billion and a price-to-earnings ratio of 56.65. The company has a 50 day moving average of $41.50 and a 200-day moving average of $42.94. Miami International Holdings, Inc. has a one year low of $28.63 and a one year high of $57.14.

Miami International (NYSE:MIAX – Get Free Report) last announced its quarterly earnings data on Wednesday, August 5th. The company reported $0.48 earnings per share for the quarter, beating the consensus estimate of $0.41 by $0.07. Miami International had a net margin of 9.70% and a return on equity of 17.98%. The business had revenue of $387.63 million for the quarter. During the same quarter in the prior year, the company earned $0.48 earnings per share. The company’s quarterly revenue was up 34.8% on a year-over-year basis. Equities research analysts anticipate that Miami International Holdings, Inc. will post 1.67 earnings per share for the current year.

Miami International Company Profile

(Free Report)

Miami International (NYSE:MIAX) is a U.S. exchange holding company that operates electronic trading venues and provides market infrastructure for listed options and related products. Its primary business activities include operating regulated exchanges, delivering market data feeds, and offering trading technology and connectivity services designed for professional traders, broker-dealers, and market makers. The company focuses on low-latency execution, order matching, and the operational controls required to support high-volume, automated trading strategies in listed derivatives.

Products and services provided by Miami International include fully electronic order matching engines, transmittable market data and feed products, colocation and connectivity solutions, and tools for risk management and regulatory compliance.