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

J Digital 6 LLC bought a new position in shares of Miami International Holdings, Inc. (NYSE:MIAX) in the second quarter, according to the company in its most recent 13F filing with the Securities and Exchange Commission (SEC). The institutional investor bought 1,807,234 shares of the company’s stock, valued at approximately $67,157,000. Miami International accounts for 39.7% of J Digital 6 LLC’s holdings, making the stock its 2nd largest position.

A number of other institutional investors and hedge funds have also recently modified their holdings of MIAX. Mad River Investors raised its stake in Miami International by 0.6% in the fourth quarter. Mad River Investors now owns 75,050 shares of the company’s stock valued at $3,331,000 after buying an additional 450 shares during the last quarter. State of Wyoming purchased a new position in shares of Miami International during the fourth quarter worth $26,000. National Bank of Canada FI acquired a new stake in Miami International during the third quarter worth about $29,000. First Trust Advisors LP increased its holdings in shares of Miami International by 3.5% during the 4th quarter. First Trust Advisors LP now owns 21,671 shares of the company’s stock valued at $962,000 after purchasing an additional 733 shares in the last quarter. Finally, Coastal Bridge Advisors LLC raised its position in shares of Miami International by 1.1% in the fourth quarter. Coastal Bridge Advisors LLC now owns 77,415 shares of the company’s stock worth $3,436,000 after acquiring an additional 850 shares during the period.

Analyst Ratings Changes

Several brokerages recently commented on MIAX. Keefe, Bruyette & Woods boosted their price target on shares of Miami International from $46.00 to $48.00 and gave the stock a “market perform” rating in a report on Friday, August 7th. Weiss Ratings reiterated a “hold (c)” rating on shares of Miami International in a report on Friday, August 7th. Rosenblatt Securities raised their price objective on shares of Miami International from $61.00 to $62.00 and gave the company a “buy” rating in a research note on Thursday, August 6th. Morgan Stanley downgraded shares of Miami International from an “overweight” rating to an “equal weight” rating and lowered their target price for the stock from $53.00 to $50.00 in a research note on Tuesday. Finally, Zacks Research cut Miami International from a “strong-buy” rating to a “hold” rating in a research report on Tuesday, June 23rd. Three research analysts have rated the stock with a Buy rating and six have given a Hold rating to the company’s stock. According to MarketBeat.com, the stock has a consensus rating of “Hold” and an average target price of $51.40.

Insider Transactions at Miami International

In related news, EVP Douglas M. Schafer, Jr. sold 48,000 shares of the firm’s stock in a transaction dated Thursday, July 2nd. The stock was sold at an average price of $41.22, for a total transaction of $1,978,560.00. Following the sale, the executive vice president directly owned 387,414 shares in the company, valued at approximately $15,969,205.08. This trade represents a 11.02% decrease in their position. The sale was disclosed in a filing with the SEC, which can be accessed through this link. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. Also, CEO Thomas P. Gallagher sold 149,700 shares of Miami International stock in a transaction dated Wednesday, August 19th. The stock was sold at an average price of $41.13, for a total value of $6,157,161.00. Following the sale, the chief executive officer directly owned 1,423,275 shares in the company, valued at approximately $58,539,300.75. The trade was a 9.52% decrease in their ownership of the stock. 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 a total of 774,948 shares of company stock worth $32,700,739 in the last three months. Company insiders own 15.60% of the company’s stock.

Miami International Price Performance

NYSE MIAX opened at $42.50 on Friday. Miami International Holdings, Inc. has a 1-year low of $34.02 and a 1-year high of $57.14. The company has a market capitalization of $4.22 billion and a P/E ratio of 55.20. The business has a 50 day moving average price of $42.81 and a 200 day moving average price of $43.05.

Miami International (NYSE:MIAX) last issued its quarterly earnings data on Wednesday, August 5th. The company reported $0.48 earnings per share for the quarter, topping analysts’ consensus estimates of $0.41 by $0.07. The business had revenue of $387.63 million during the quarter. Miami International had a net margin of 9.70% and a return on equity of 16.95%. The company’s revenue for the quarter was up 34.8% on a year-over-year basis. During the same period last year, the business earned $0.48 earnings per share. On average, research analysts expect that Miami International Holdings, Inc. will post 1.7 earnings per share for the current fiscal year.

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.