TOP TIERMARKET NEWSWIRE
Movers explained · September 13, 2026

Why Is MIAMI INTL HLDGS INC (MIAX) Stock Moving Today?

By the Top Tier Newswire AI Desk · September 2, 2026 at 10:30 AM ET · reviewed against 0 wire stories

MIAMI INTL HLDGS INC (MIAX) is drawing unusual attention today.

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MIAX stock is down 4.11% at $40.38 as of the latest trade, following a downgrade from Morgan Stanley. The firm cut its rating to Equal Weight and lowered the price target to $50. The move reflects a shift in the firm’s assessment of the stock’s risk-reward balance, despite recent earnings and operational outperformance.

What Happened

Morgan Stanley’s downgrade is the primary catalyst for the stock’s decline. The firm cited a balanced risk-reward outlook, which led to the Equal Weight rating. This follows a recent earnings report in which Miami International Holdings beat estimates for both adjusted EPS and revenue. The stock opened at $42.11 but quickly moved lower, hitting a session low of $40.00 shortly after the market opened. The stock has traded in a narrow range since, with volume at 0.3 million shares, or 0.2 times the 3-month daily average. Meanwhile, other analysts have maintained or upgraded their ratings. Keefe, Bruyette & Woods raised its price target to $48 and maintained Market Perform, while Rosenblatt raised its target to $62 and kept a Buy rating.

What The Data Shows

MIAX has a market cap of $4.3 billion and a P/E ratio of 25.4. The stock is currently trading near its 52-week low of $34.02, having printed six fresh 52-week lows on September 2. Over the past 30 days, sentiment has deteriorated, falling to 48 out of 100 from an average of 54. Insiders have been active sellers, with three executives and directors reporting sales totaling $38.2 million in the last 90 days. The most recent insider transaction was reported on August 20.

What To Watch

The stock is set to continue under coverage from multiple analysts, with a range of price targets from $48 to $62. Investors may look for further commentary from rating firms or potential earnings surprises to gauge the stock’s direction.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

MIAX by the numbers

7 sessions: -0.50%Mkt cap: $4.3BP/E: 25.452w: $34.02 to $57.14
MIAX · Sep 2 session (5-min) · -3.54% vs prior close · updated 8:45 PM ET
$39.51$40.91$42.30prev close $42.11$40.628:00 AM10:45 AM1:30 PM4:15 PM7:00 PM8:00 AM · $42.119:00 AM · $42.159:25 AM · $41.969:30 AM · $40.879:35 AM · $40.849:40 AM · $41.419:45 AM · $41.199:50 AM · $40.909:55 AM · $40.5510:00 AM · $40.7210:05 AM · $40.5810:10 AM · $40.5610:15 AM · $40.5510:20 AM · $40.7810:25 AM · $40.3810:30 AM · $40.2610:35 AM · $40.4510:40 AM · $40.5610:45 AM · $40.6910:50 AM · $40.8010:55 AM · $40.7811:00 AM · $40.7711:05 AM · $40.8411:10 AM · $40.8711:15 AM · $40.9311:20 AM · $40.7411:25 AM · $40.7311:30 AM · $40.5911:35 AM · $40.6111:40 AM · $40.6311:45 AM · $40.4311:50 AM · $40.4411:55 AM · $40.4312:00 PM · $40.5112:05 PM · $40.4312:10 PM · $40.4812:15 PM · $40.4612:20 PM · $40.2812:25 PM · $40.3112:30 PM · $40.4512:35 PM · $40.4412:40 PM · $40.4712:45 PM · $40.4812:50 PM · $40.3212:55 PM · $40.111:00 PM · $40.201:05 PM · $40.221:10 PM · $40.131:15 PM · $40.131:20 PM · $40.091:25 PM · $39.871:30 PM · $39.881:35 PM · $39.661:40 PM · $39.881:45 PM · $40.011:50 PM · $39.971:55 PM · $40.002:00 PM · $40.012:05 PM · $40.082:10 PM · $40.202:15 PM · $40.222:20 PM · $40.202:25 PM · $40.232:30 PM · $40.312:35 PM · $40.322:40 PM · $40.422:45 PM · $40.342:50 PM · $40.312:55 PM · $40.303:00 PM · $40.313:05 PM · $40.283:10 PM · $40.433:15 PM · $40.423:20 PM · $40.373:25 PM · $40.533:30 PM · $40.503:35 PM · $40.473:40 PM · $40.483:45 PM · $40.553:50 PM · $40.453:55 PM · $40.654:00 PM · $40.624:05 PM · $40.624:10 PM · $40.624:55 PM · $40.626:30 PM · $40.627:00 PM · $40.62

The headlines behind the move

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More on MIAX: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier MIAX move explainers: 2026-09-02