Miami International Holdings (MIAX) Stock Jumps After Q3 Earnings Reset The Story

Miami International Holdings came into this Q3 2026 print under a cloud of concerns about future revenue pressure and a long run of weak 90 day share performance. Then the numbers hit and the stock jumped 7% to $33.63 in regular trading.

The move hinges on one core story. MIAX posted adjusted earnings of about $50 million with adjusted diluted EPS of $0.45, while adjusted EBITDA reached $71 million on a 54% margin. That kind of profitability shift is what forces investors to rethink a stock that many had treated as a fading growth story.

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Q3 2026 Earnings Summary

• Revenue (Q3 2026 vs. Q3 2025): US$376.2m vs. US$339.8m (up about 11%).
• Net Income (Excl. Extra Items, Q3 2026 vs. Q3 2025): US$52.5m vs. a loss of US$102.1m (moved from loss to profit).
• Basic EPS (Q3 2026 vs. Q3 2025): US$0.53 vs. a loss of US$1.46 per share (shifted from loss to positive earnings).
• Adjusted EBITDA Margin (Q3 2026 vs. Q3 2025): 54% vs. roughly mid 40s% a year ago (improved by about 10 percentage points).

MIAX’s margins soared even faster than its revenue. Ask Charlie what’s really behind Miami’s 1,000-point margin jump.

Miami International Holdings Starts to Broaden the Revenue Mix

Miami International Holdings has a clear ambition to turn new products and shared infrastructure into a richer mix of income streams rather than a single product story.

"The main thing that has to go right is that MIAX turns its Bloomberg-linked equity index and fertilizer futures launches, its low-latency technology roll-out and TISE listings momentum into a broader multi-asset revenue mix rather than isolated product wins."

Q3 shows early but incomplete progress. Options net revenue of US$113m and a 54% adjusted EBITDA margin still anchor results. However, non-transaction fees climbed 38% and TISE listings feed recurring revenue. Futures net revenue of US$5m, with Bloomberg and fertilizer contracts live, plus OCC backed clearing and a US$40m FCM capital injection, signal that the multi-asset build is moving from concept into measured execution, even if futures remain a small slice today.

The price and this Narrative do not agree. → Uncover what this Narrative says Miami International Holdings is actually worth.

Miami International Holdings: Stress Testing The Bear Case

The key worry is that Miami International Holdings overbuilds new products while costs stay high and uptake lags.

"Rapid expansion into new products and geographies, such as Bloomberg index futures and the TISE and BSX listings businesses, adds regulatory and execution risk that could slow product uptake. This could leave the company with higher operating expenses without a matching contribution to revenue growth."

This quarter undercuts part of that fear. Adjusted operating expenses were roughly flat, while net revenue rose 20% and adjusted EBITDA margin hit 54%. Futures and TISE remain small, so the milestone missed is clear. New products are not yet contributing enough to matter on their own.

Hunt Quiet Disconnects In Plain Sight

Miami International Holdings just reminded investors how quickly a narrative can shift when reported earnings move. The real opportunity is finding stocks that might be undervalued before the market recognizes the gap.

• Company 1 - 37% below our estimate - uses recent bank acquisitions and a changing funding mix to pursue cheaper, more diversified deposits and lower credit costs.
• Company 2 - 31% below our estimate - embeds custom silicon, connectivity and security hardware into critical digital infrastructure that supports rising data traffic and growing workloads.
• Company 3 - 19% below our estimate - expands franchised and owned teahouses while relying on membership, supply chain services and technology tools to change store-level economics.

Three companies from the same screener. Open all 29 potentially undervalued companies →

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