SEP 17·SEC EDGARLow
Brown Shelly sold $819K of MIAX
Brown Shelly (EVP, Chief Strategy Officer) sold 21,217 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $38.61 ($0.82M total) on 2026-09-16 under a Rule 10b5-1 trading plan.
StockNYSE · US · USDFinancial Services · Capital Markets
$MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
AlphAI earnings readSecond Quarter 2026 · AUG 5Record Q2 net revenue of $141 million (+35% YoY), Q2 GAAP diluted EPS of $0.40, adjusted diluted EPS of $0.48, and Q2 adjusted EBITDA of $77 million (+57% YoY).Verdict: strongRead →
Reads like this one publish minutes after the filing lands on EDGAR. Get them as JSON over the API or inside your AI agent over MCP.
Price · $MIAXvia TradingView
AI sentiment · 7d1 articles
- Bullish
- 0
- Neutral
- 0
- Bearish
- 1
Insider · 30dAll trades →
- Buys
- — 0 txs
- Sells
- $7.4M 7 txs
Teekell Judson Gray2× · $353K
10b5-1 share of filings100%
Top stories · $MIAXMore →
SEP 15·tipranks.com
MIAX Stock Sinks As Growth Fears And CEO Selling Bite
Miami International Holdings (MIAX) stock fell due to a forecast of 22% annual revenue decline over three years and CEO insider selling. Broader market concerns about Fed rate hikes also contributed to the decline. Despite near-term challenges, MIAX has a strong balance sheet and steady cash generation, which could support long-term growth.
SEP 4·SEC EDGAR
Gallagher Thomas P. sold $2.0M of MIAX (indirect holdings)
Gallagher Thomas P. (Chairman & CEO) sold 47,000 indirectly-held shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $42.43 ($1.99M total) on 2026-09-03 under a Rule 10b5-1 trading plan.
MIAX sentiment & insider activity
Over the past 7 days, AlphAI's AI scored 1 news story mentioning MIAX (MIAMI INTERNATIONAL HOLDINGS, INC.). Coverage has skewed bearish: 0 bullish, 0 neutral, and 1 bearish.
Recent MIAX coverage spans insider activity, financial news and earnings.
In the last 30 days, MIAX insiders filed 7 SEC Form 4 transactions — no purchases and 7 sales ($7.4M). The most active reporter was Teekell Judson Gray with 2 filings. 100% of those filings were made under pre-arranged Rule 10b5-1 plans.
What's driving MIAX
Insider sale of ~0.8M USD may signal slight negative sentiment but size is modest.
Negative sentiment from growth forecast and insider sell-off likely pressures price lower.
The insider sale may signal reduced confidence from the CEO, potentially pressuring the stock lower in the short term.
The insider sale represents a modest $1.8 M cash outflow and reduces outstanding options by 44,445, with 44,444 options remaining fully vested.
Large insider sale may signal negative sentiment or portfolio rebalancing
AlphAI scores every news story that mentions MIAX with an AI model for sentiment and relevance, and aggregates insider trades from MIAMI INTERNATIONAL HOLDINGS, INC.'s SEC EDGAR Form 4 filings. Figures refresh continuously.
News on $MIAX
Score
Brown Shelly sold $819K of MIAX
Brown Shelly (EVP, Chief Strategy Officer) sold 21,217 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $38.61 ($0.82M total) on 2026-09-16 under a Rule 10b5-1 trading plan.
1 min read
MIAX Stock Sinks As Growth Fears And CEO Selling Bite
Miami International Holdings (MIAX) stock fell due to a forecast of 22% annual revenue decline over three years and CEO insider selling. Broader market concerns about Fed rate hikes also contributed to the decline. Despite near-term challenges, MIAX has a strong balance sheet and steady cash generation, which could support long-term growth.
2 min readGallagher Thomas P. sold $2.0M of MIAX (indirect holdings)
Gallagher Thomas P. (Chairman & CEO) sold 47,000 indirectly-held shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $42.43 ($1.99M total) on 2026-09-03 under a Rule 10b5-1 trading plan.
1 min readMiami International Holdings (MIAX) EVP sells 44K shares in 10b5-1 trade
Miami International Holdings (MIAX) EVP Barbara J. Comly exercised 44,445 options at $12.00 per share and sold the shares at a weighted average price of $40.49, totaling $1.80M in proceeds. The transaction was part of a Rule 10b5-1 trading plan established in December 2025. Comly still holds 44,444 options from the same grant, expiring in 2028.
2 min readComly Barbara J. sold $1.8M of MIAX
Comly Barbara J. (EVP, GC & Corporate Secretary) sold 44,445 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $40.49 ($1.80M total) on 2026-09-02 under a Rule 10b5-1 trading plan.
1 min readMiami International (MIAX) risk and compliance officer exercises and sells 11K shares in one day
MIAX's EVP and CRO Edward Deitzel exercised 11,000 stock options at $12 each and sold the shares at an average price of $42.21 under a pre-set Rule 10b5-1 plan on September 3, 2026. The transaction was executed in multiple trades ranging from $42.00 to $42.32. Deitzel still holds 66,000 stock options after this transaction.
1 min readSchafer Douglas M. JR sold $1.9M of MIAX
Schafer Douglas M. JR (EVP and CIO) sold 48,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $40.48 ($1.94M total) on 2026-09-02 under a Rule 10b5-1 trading plan.
1 min readMiami International Holdings Reports August 2026 Trading Results
Miami International Holdings (MIAX) reported August 2026 trading results. MIAX Exchange Group's YTD ADV rose 25.5% to 11.0M contracts, with market share at 17.1%. MIAX Futures saw a 25.9% increase in agricultural ADV YTD.
2 min read
Here Are Tuesday’s Top Wall Street Analyst Research Calls: Akamai Technologies, Arista Networks, Booking Holdings, Cisco Systems, Dell Technologies, Duolingo, Robinhood Markets, PG&E, and More
Analysts adjusted price targets for several companies: PG&E's (PCG) target was cut to $13, Duolingo's (DUOL) doubled to $210. Deutsche Bank initiated Arista (ANET) and Cisco (CSCO) with Buy ratings, Dell (DELL) with Hold. September rate hike odds rose to 55%, impacting markets. Oil prices surged due to U.S.-Iran tensions.
3 min readMorgan Stanley cuts Miami International Holdings stock rating on balanced risk-reward outlook
Morgan Stanley downgraded Miami International Holdings (MIAX) to Equalweight, lowering its price target to $50.00 from $53.00, citing a balanced risk-reward profile. The firm expects revenue per contract to soften and margin expansion to slow. MIAX's stock trades at $42.87, below the new target and fair value estimate. The company reported strong Q2 2026 earnings, beating expectations with $0.48 EPS and $141.1M revenue. Morgan Stanley remains constructive on MIAX's long-term growth.
2 min read