---
title: "TMX to invest about USD 800 million in MEMX, combine BOX into USD 2.3 billion MEMX Group"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/294423962.md"
description: "TMX Group will invest approximately USD 800 million in MEMX, combining it with options exchange operator BOX to form the MEMX Group, valued at USD 2.3 billion. TMX will hold a 59% stake. The combined entity, expected to close in H2 2027 pending regulatory approval, will operate three US listed options exchanges, an equities exchange, and a market-technology business."
datetime: "2026-07-30T22:35:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/294423962.md)
  - [en](https://longbridge.com/en/news/294423962.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/294423962.md)
generator: "portal-rs"
---

# TMX to invest about USD 800 million in MEMX, combine BOX into USD 2.3 billion MEMX Group

-   TMX will invest about USD 800 million in MEMX, concurrent with combining MEMX with options exchange operator BOX. \* The combined MEMX Group is valued at about USD 2.3 billion; TMX will own about 59%. \* MEMX and BOX generated about USD 280 million revenue, USD 134 million adjusted EBITDA in 2025. \* The group will hold three exchange licenses, spanning three US listed options exchanges, an equities exchange, and a market-technology business. \* Closing is expected in the second half of 2027, subject to regulatory approval. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. TMX Group Limited published the original content used to generate this news brief via Newsfile (Ref. ID: 202607301834NEWSFILECNPR\_\_\_\_20260730\_307407\_1) on July 30, 2026, and is solely responsible for the information contained therein. © Copyright 2026 - Public Technologies (PUBT)

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> **Disclaimer: This article is for reference only and does not constitute any investment advice.**