TMX Group and MEMX to Form US$2.3 Billion Exchange Powerhouse Through Strategic Combination

Quick Summary

TMX Group and MEMX are forming a US$2.3 billion exchange group by combining MEMX and BOX. This strategic exchange combination creates a multi-asset class operator holding three exchange licenses, representing 10% of US listed options volume, backed by an US$800 million investment from TMX Group.

How Does the MEMX and BOX Combination Reshape the US Market?

The strategic exchange combination creates a formidable competitor in the US multi-asset landscape by merging electronic and floor-based trading capabilities. By integrating BOX’s unique open outcry functionality with MEMX’s high-performance technology, the new entity will operate three exchange medallions across options and equities. This scale allows the group to:

• Capture approximately 10% of US listed options volume.
• Leverage combined 2025 revenues of US$280 million.
• Utilize US$134 million EBITDA to drive further product innovation.

What Role Does TMX Group Play in the New Entity?

TMX Group will emerge as the majority owner with 59% interest, following a massive US$800 million cash injection. This move signals a significant global growth strategy for the Canadian exchange giant, moving beyond its domestic borders to anchor a major US infrastructure player. The transaction is supported by a consortium of investors including Citadel Securities, Morgan Stanley, and Virtu Financial, ensuring the new group remains deeply integrated with key market participants.

What Results Has the Combined Technology Platform Delivered?

The strategic exchange combination is built on a foundation of proven financial performance and market technology licensing. In 2025, the entities demonstrated strong operational efficiency with an implied enterprise value of US$2.3 billion. The group will continue to operate six distinct markets by 2026, including the upcoming MX2 Options pro-rata exchange, providing diverse liquidity pools for global institutional investors and retail traders alike.

FF NEWS TAKE:

This strategic exchange combination absolutely moves the needle by creating a genuine third pillar in the US exchange landscape. TMX Group’s aggressive US$800 million investment proves that the battle for US options market share is intensifying. By combining MEMX’s tech-first approach with BOX’s traditional floor trading, they are building a diversified market infrastructure that can challenge the duopoly of incumbent exchange giants. This is a massive win for market competition.