J Digital 6 LLC Invests $67.16 Million in Miami International Holdings, Inc. $MIAX

J Digital 6 LLC purchased a new position in shares of Miami International Holdings, Inc. (NYSE:MIAX) during the 2nd quarter, according to its most recent 13F filing with the SEC. The firm purchased 1,807,234 shares of the company’s stock, valued at approximately $67,157,000. Miami International comprises approximately 39.7% of J Digital 6 LLC’s portfolio, making the stock its 2nd biggest holding. J Digital 6 LLC owned approximately 1.82% of Miami International as of its most recent filing with the SEC.

Several other hedge funds and other institutional investors have also recently bought and sold shares of the stock. Vanguard Group Inc. purchased a new stake in shares of Miami International during the third quarter valued at approximately $55,660,000. First Trust Advisors LP purchased a new stake in Miami International during the 3rd quarter valued at $843,000. Legal & General Group Plc purchased a new stake in Miami International during the 3rd quarter valued at $302,000. Franklin Resources Inc. bought a new stake in Miami International in the 3rd quarter worth $17,403,000. Finally, Sei Investments Co. bought a new stake in Miami International in the 3rd quarter worth $4,074,000.

Analyst Ratings Changes

MIAX has been the subject of a number of analyst reports. Rosenblatt Securities increased their target price on shares of Miami International from $61.00 to $62.00 and gave the stock a “buy” rating in a report on Thursday, August 6th. Keefe, Bruyette & Woods upped their price target on Miami International from $46.00 to $48.00 and gave the company a “market perform” rating in a research report on Friday, August 7th. Wall Street Zen cut Miami International from a “buy” rating to a “hold” rating in a report on Sunday, August 23rd. Morgan Stanley lowered Miami International from an “overweight” rating to an “equal weight” rating and cut their price objective for the stock from $53.00 to $50.00 in a research report on Tuesday. Finally, Weiss Ratings reissued a “hold (c)” rating on shares of Miami International in a research note on Friday, August 7th. Three equities research analysts have rated the stock with a Buy rating and six have issued a Hold rating to the company. According to data from MarketBeat, the company has a consensus rating of “Hold” and a consensus target price of $51.40.

Miami International Price Performance

MIAX opened at $42.50 on Friday. The stock has a 50-day moving average price of $42.81 and a 200-day moving average price of $43.05. The firm has a market cap of $4.22 billion and a PE ratio of 55.20. Miami International Holdings, Inc. has a 1 year low of $34.02 and a 1 year high of $57.14.

Miami International (NYSE:MIAX) last released its quarterly earnings data on Wednesday, August 5th. The company reported $0.48 EPS for the quarter, topping the consensus estimate of $0.41 by $0.07. The company had revenue of $387.63 million during the quarter. Miami International had a return on equity of 16.95% and a net margin of 9.70%.Miami International’s quarterly revenue was up 34.8% compared to the same quarter last year. During the same quarter in the previous year, the business posted $0.48 earnings per share. As a group, sell-side analysts anticipate that Miami International Holdings, Inc. will post 1.7 EPS for the current year.

Insider Activity

In related news, EVP Barbara Comly sold 44,445 shares of Miami International stock in a transaction that occurred on Tuesday, August 4th. The stock was sold at an average price of $45.69, for a total transaction of $2,030,692.05. Following the sale, the executive vice president owned 882,984 shares of the company’s stock, valued at approximately $40,343,538.96. This trade represents a 4.79% decrease in their position. The sale was disclosed in a document filed with the Securities & Exchange Commission, which can be accessed through this link. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. Also, CEO Thomas Gallagher sold 149,700 shares of the business’s stock in a transaction on Wednesday, August 19th. The stock was sold at an average price of $41.13, for a total transaction of $6,157,161.00. Following the completion of the sale, the chief executive officer owned 1,423,275 shares in the company, valued at approximately $58,539,300.75. The trade was a 9.52% decrease in their position. The SEC filing for this sale provides additional information. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. The sale was made to cover tax withholding obligations related to the vesting of equity awards. Insiders have sold 774,948 shares of company stock worth $32,700,739 over the last ninety days. Corporate insiders own 15.60% of the company’s stock.

Trending Headlines about Miami International

Here are the key news stories impacting Miami International this week:

• Positive Sentiment: Miami International Holdings reported that the MIAX Exchange Group’s multi-list options average daily volume increased 25.5% year to date through August 2026, signaling continued momentum in the company’s core trading business. Miami International Holdings Reports August 2026 Trading Results
• Negative Sentiment: Morgan Stanley downgraded MIAX, pressuring the stock by raising concerns about its valuation, outlook, or potential upside. The downgrade was reported alongside a broader decline in the shares. Morgan Stanley downgrades Miami International Holdings
• Negative Sentiment: Company insiders reported selling approximately 169,000 shares worth about $6.6 million in aggregate. The sellers included CEO Thomas Gallagher, EVPs Douglas Schafer Jr., Edward Deitzel, and Barbara Comly, and Director Judson Teekell. Although all transactions were conducted under pre-arranged Rule 10b5-1 trading plans—and executives retained sizable positions—the concentration of sales may weigh on investor sentiment. SEC insider transaction filing

Miami International Profile

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.