An Exciting New Chapter: BOX Options to Join MEMX

Today we announced a definitive agreement for TMX Group to make a strategic investment in MEMX. Concurrent with that transaction, BOX Options, a US equity options market with both electronic and floor-based trading co-owned by TMX Group, will be combined into MEMX to create an expanded exchange group which will operate three options exchanges, an equities exchange in addition to providing market technology. You can read today’s announcement here.

We are excited to enter this next chapter together and continue building on the client-focused approach that has defined MEMX from the beginning.  
The proposed combination will significantly enhance MEMX’s capabilities and scale by bringing together two leaders in the US listed options space to create an exchange group leader even better positioned to respond to client needs. The benefits will include: 

• More ways to access liquidity in options spanning maker taker, pro-rata and open-outcry (floor) offerings 
• Greater ability to develop new products and services 
• Additional operational and technical staff 
• Streamlined operational functionality and efficiencies 

The transaction is expected to close in mid-2027. In the meantime, we will begin planning for the integration of the businesses in a thoughtful and orderly fashion. We are committed to a smooth transition, and any changes will be communicated well in advance.  

We are excited about what lies ahead and look forward to move into this next phase of MEMX’s growth.  

Read the Press Release Here

Jonathan Kellner