MIAX S-1 Reveals $100M Loss Amidst Strategic Shifts, Bloomberg Partnership

Ticker: MIAX · Form: S-1 · Filed: Dec 9, 2025 · CIK: 1438472

Sentiment: bearish

Topics: S-1 Filing, Secondary Offering, Financial Performance, Exchange Operator, Derivatives Market, Regulatory Risk, Strategic Partnerships

Related Tickers: MIAX, HOOD, SIG

TL;DR

**MIAX's S-1 shows a concerning $100 million loss despite volume growth, making this secondary offering by insiders a red flag for new investors.**

AI Summary

Miami International Holdings, Inc. (MIAX) filed an S-1 on December 9, 2025, for the sale of 6,750,000 shares of common stock by existing selling stockholders, with MIAX not receiving any proceeds. The company reported revenues less cost of revenues of $306.0 million for the nine months ended September 30, 2025, a 10.9% increase from $275.6 million in 2024. Net income for the nine months ended September 30, 2025, was a loss of $(100.0) million, a significant decline from a net income of $102.0 million in 2024. MIAX's average daily volume in U.S. options on its exchanges increased by 38.9% to 9.0 million contracts for the nine months ended September 30, 2025, compared to 6.4 million in the same period of 2024. Key strategic developments include a ten-year exclusive license agreement with Bloomberg in July 2024 to develop proprietary products like futures and options on the Bloomberg 500 Index, with launches planned for the first half of 2026. The company also announced an agreement on November 25, 2025, to sell MIAXdx to Robinhood Markets, Inc. in partnership with Susquehanna International Group. Risks include regulatory ownership limitations, with no person allowed to own greater than 40% of any class of capital stock and exchange members limited to 20%.

Why It Matters

This S-1 filing is crucial for investors as it details a significant net loss of $(100.0) million for the nine months ended September 30, 2025, despite robust growth in options trading volume, which could signal underlying operational challenges or substantial investments. The sale of 6,750,000 shares by selling stockholders, with no proceeds to MIAX, indicates a lack of direct capital infusion for the company, potentially impacting future growth initiatives. The strategic partnership with Bloomberg and the planned launch of new index products in 2026 could enhance MIAX's competitive position against rivals like CME Group and Cboe Global Markets, but the announced sale of MIAXdx to Robinhood introduces uncertainty regarding its long-term derivatives strategy. Employees and customers will be watching how these strategic shifts affect product offerings and market stability.

Risk Assessment

Risk Level: high — The company reported a net loss of $(100.0) million for the nine months ended September 30, 2025, a substantial reversal from a $102.0 million net income in 2024, indicating significant financial deterioration. Additionally, the S-1 highlights strict ownership limitations, prohibiting any person from owning greater than 40% of any class of capital stock and exchange members from owning over 20%, which could deter large institutional investors and limit liquidity.

Analyst Insight

Investors should exercise extreme caution given the reported $(100.0) million net loss for the nine months ended September 30, 2025, and the fact that MIAX will receive no proceeds from this offering. Await further financial disclosures to understand the drivers of the loss and assess the impact of the MIAXdx sale before considering an investment.

Financial Highlights

revenue
$306.0M
net Income
$(100.0)M
revenue Growth
+10.9%

Revenue Breakdown

SegmentRevenueGrowth
Revenues less cost of revenues$306.0M+10.9%

Key Numbers

Key Players & Entities

FAQ

What were Miami International Holdings, Inc.'s revenues and net income for the nine months ended September 30, 2025?

For the nine months ended September 30, 2025, Miami International Holdings, Inc. reported revenues less cost of revenues of $306.0 million. The company recorded a net loss of $(100.0) million for the same period.

How many shares are being offered in this S-1 filing for MIAX and who is selling them?

Up to 6,750,000 shares of common stock are being offered by the selling stockholders identified in the prospectus. Miami International Holdings, Inc. itself is not selling any shares and will not receive any proceeds from this sale.

What is the significance of the Bloomberg License Agreement for MIAX?

The Bloomberg License Agreement, entered in July 2024, grants MIAX a ten-year exclusive license to list futures, options on futures, and cash-settled index options on the Bloomberg 500 Index and the Bloomberg US Large Cap Volatility Index. This allows MIAX to develop proprietary products, with launches planned for the first half of 2026.

What are the key ownership limitations for Miami International Holdings, Inc. stock?

Miami International Holdings, Inc.'s amended and restated certificate of incorporation prohibits any person from owning greater than 40% of any class of its capital stock. Exchange members are further limited to owning no more than 20% of any class of capital stock, and all persons are restricted from voting shares representing more than 20% of the voting power.

What was the average daily volume in U.S. options on MIAX Exchanges for the nine months ended September 30, 2025?

The average daily volume in U.S. options on the MIAX Exchanges for the nine months ended September 30, 2025, was 9.0 million contracts. This represents a 38.9% increase compared to 6.4 million contracts in the same period in 2024.

What is the purpose of the Equity Rights Programs (ERPs) at MIAX?

MIAX established five Equity Rights Programs (ERPs) to build market share and align with trading firms, order flow providers, and market makers. These programs allowed participating exchange member firms to acquire equity in MIH by paying an initial purchase price or prepaying exchange fees, with warrants vesting upon achieving specific liquidity volume targets.

Which entities did MIAX acquire to expand its market capabilities?

MIAX expanded its capabilities through several acquisitions, including MIAX Futures in December 2020, The Bermuda Stock Exchange (BSX) in December 2020, Dorman Trading in October 2022, MIAXdx in May 2023, and The International Stock Exchange Group Limited (TISEG) in June 2025.

What is the current status of MIAXdx following the S-1 filing?

On November 25, 2025, Miami International Holdings, Inc. announced it entered into an agreement to sell MIAXdx to Robinhood Markets, Inc. in partnership with Susquehanna International Group.

What are the primary sources of revenue for Miami International Holdings, Inc.?

Miami International Holdings, Inc.'s revenue primarily consists of transaction fees, access fees, and market data fees, which are generated from transactions executed on its various exchanges.

What are the main risks associated with investing in MIAX common stock?

Investing in MIAX common stock involves risks such as the significant net loss of $(100.0) million for the nine months ended September 30, 2025, and regulatory ownership limitations that restrict any person from owning more than 40% and exchange members from owning more than 20% of any class of capital stock.

Risk Factors

Industry Context

The U.S. options market is highly competitive, characterized by established exchanges and increasing technological innovation. Growth in trading volumes, driven by factors like market volatility and new product development, is a key trend. MIAX operates within this dynamic environment, seeking to differentiate itself through strategic partnerships and proprietary offerings.

Regulatory Implications

MIAX faces significant regulatory oversight inherent to operating exchanges. Ownership limitations (40% for individuals, 20% for members) are designed to ensure independence and prevent undue influence. Compliance with SEC regulations and exchange rules is paramount and any violations could lead to severe penalties.

What Investors Should Do

  1. Analyze the drivers behind the net loss of $(100.0)M for the nine months ended September 30, 2025.
  2. Evaluate the long-term potential and execution risk of the Bloomberg exclusive license agreement.
  3. Assess the impact of ownership and voting power limitations on potential strategic investments or acquisitions.
  4. Monitor competitive dynamics in the U.S. options market.

Key Dates

Glossary

S-1 Filing
A registration statement filed with the U.S. Securities and Exchange Commission (SEC) by companies planning to offer securities to the public. (This is the document providing the basis for this analysis, detailing the company's business, financials, and risks for potential investors.)
Selling Stockholders
Existing shareholders who are offering their shares for sale in a public offering, rather than the company itself selling new shares. (In this S-1, MIAX is not raising capital; the proceeds from the share sale go to these existing stockholders.)
Average Daily Volume (ADV)
The average number of contracts or shares traded on an exchange or security per day over a specified period. (A key metric for MIAX, indicating trading activity and market share in the U.S. options market.)
Net Income (Loss)
A company's total profit or loss after all expenses, taxes, and interest have been deducted from revenue. (A critical indicator of profitability, which has significantly worsened for MIAX in the reported period.)
Capital Stock
The total amount of stock that a corporation has issued or is authorized to issue. (Relevant due to the ownership limitations discussed in the risk factors, affecting control and potential investment.)

Year-Over-Year Comparison

This S-1 filing reveals a concerning shift in financial performance compared to the prior year. While revenues less cost of revenues saw a modest 10.9% increase to $306.0 million for the nine months ended September 30, 2025, net income plummeted to a $(100.0) million loss, a stark contrast to the $102.0 million profit in the same period of 2024. This indicates a significant deterioration in profitability. New risks related to the Bloomberg partnership and the sale of MIAXdx have emerged, while existing regulatory ownership limitations remain a key consideration.

Filing Stats: 4,583 words · 18 min read · ~15 pages · Grade level 11.7 · Accepted 2025-12-09 17:15:39

Key Financial Figures

Filing Documents

Risk Factors

Risk Factors 25 Special Note Regarding Forward-Looking Statements 71 Market, Industry And Other Data 73

Use of Proceeds

Use of Proceeds 74 Dividend Policy 75 Capitalization 76

Management's Discussion and Analysis of Financial Condition and Results of Operations

Management's Discussion and Analysis of Financial Condition and Results of Operations 77 Industry Overview 180

Business

Business 188 Management 240 Executive and Director Compensation 251 Certain Relationships and Related Party Transactions 268 Principal and Selling Stockholders 287

Description of Capital Stock

Description of Capital Stock 292 Shares Eligible for Future Sale 302 Certain U.S. Federal Income Tax and Estate Tax Consequences to Non U.S. Holders 305 Underwriting (Conflicts of Interest) 310 Legal Matters 322 Experts 322 Where You Can Find Additional Information 322 Index to Consolidated Financial Statements F- 1 You should rely only on the information contained in this prospectus, any amendment or supplement to this prospectus or any free writing prospectus that we may authorize to be delivered or made available to you. Neither we, the selling stockholders nor the underwriters have authorized anyone to provide any information or to make any representations other than those contained in this prospectus, any amendment or supplement to this prospectus or any free writing prospectuses prepared by us or on our behalf. Neither we, the selling stockholders nor the underwriters take any responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. This prospectus, any amendment or supplement to this prospectus or any applicable free writing prospectus is an offer to sell only the shares offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus, any amendment or supplement to this prospectus or any applicable free writing prospectus is current only as of its date, regardless of the time of delivery of this prospectus, any amendment or supplement to this prospectus or any applicable free writing prospectus or any sale of the shares. Our business, financial condition, results of operations and prospects may have changed since such date. Trademarks We own MIAX , MIAX Options , MIAX Pearl , MIAX Emerald and MIAX Sapphire as trademarks or service marks in the United States and certain other jurisdictions. MIAX Futures and TINI are currently pending. This prospectus contains references to our trademarks and se

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