MIAX · NYSE Arca · United States
miaxglobal.comFinancials as of FY2025
Runs four separate U.S. options exchanges under one owner so the same contracts trade with different fee structures on each.
What this company is and how it runs — written from structure, not news.
Miami International Holdings owns four separately registered U.S. options exchanges — MIAX, MIAX Pearl, MIAX Emerald, and MIAX Sapphire — and because each registration carries its own maker-taker fee schedule, the same options contract trades simultaneously across four venues at four different rebate rates. Market makers have built proprietary algorithms to exploit those fee differences, and broker-dealers maintain separate connectivity to each venue, so the volume flowing through the platform is attracted not by better prices but by the rebate arbitrage the four-registration structure makes available. That structure is the one thing a competitor cannot copy by launching a single new exchange, since a single registration produces only one fee tier and no cross-venue arbitrage to attract market-maker demand. The same feature that cannot be replicated is also the one most exposed to regulatory risk: if the SEC required common-ownership operators to consolidate their registrations or standardize fee schedules across venues listing identical contracts, the rebate arbitrage would disappear along with the market-maker volume built around it.
How does this company make money?
The company collects a transaction fee on every options contract traded across its four U.S. exchanges, with each exchange charging its own maker-taker rate. It also earns listing fees from companies that use BSX and International Stock Exchange to list their securities. On top of that, it collects clearing and settlement fees from trades processed through MIAX Futures.
What makes this company hard to replace?
Market makers have built proprietary algorithms specifically calibrated to exploit the fee differences across the four MIAX exchanges — rewiring those systems for a different set of venues takes significant time and money. Broker-dealers have built and maintain separate connectivity and order-routing logic for each of the four exchange registrations, which is not easily transferred. International issuers listed on BSX face a lengthy delisting and re-registration process if they want to move to a different offshore exchange.
What limits this company?
Every one of the four exchanges must have its own separate capital reserve, its own board, and its own compliance team. None of that can be shared or combined. So as the company grows, those overhead costs multiply with each registration rather than shrinking — which squeezes profit margins compared to a rival running a single exchange.
What does this company depend on?
The company cannot operate without SEC exchange operator licenses for each of the four U.S. exchanges, a CFTC registration covering MIAX Futures clearing operations, Bermuda Monetary Authority approval for its BSX exchange, its proprietary electronic trading technology, and active clearing relationships with major broker-dealers.
Who depends on this company?
Market makers have built their trading algorithms around the rebate differences across the four MIAX exchanges — if those exchanges went away, that arbitrage opportunity would disappear entirely. Institutional broker-dealers depend on consistent execution across the MIAX family and would need to rebuild their order-routing systems for alternatives. Bermuda-domiciled investment funds use BSX listings to meet regulatory requirements in international markets and would face a difficult re-registration process elsewhere.
How does this company scale?
Adding more options symbols and contract months to the existing exchanges costs very little — the electronic matching engines handle extra volume without much added expense. What does not get cheaper is the regulatory side: every additional exchange registration means separate SEC oversight, a new independent board, and a duplicated compliance operation that cannot be folded into the others.
What external forces can significantly affect this company?
Changes to Bermuda's international tax treaties could make BSX less attractive to the cross-border funds that list there. SEC modifications to best execution rules could eliminate the benefit of running multiple competing exchanges under one owner. Dodd-Frank derivatives regulations expanding into options markets would raise compliance costs across all four exchange registrations at once.
Where is this company structurally vulnerable?
If the SEC passed a rule requiring companies that own multiple exchanges to consolidate them, or banned different fee schedules across venues listing the same contracts, the entire model would collapse. The rebate differences that attract market makers would disappear, and with them the trading volume that the business runs on.
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