MEMX LLC, an exchange operator backed by trading firms Jane Street and Morgan Stanley, is entering a deal to combine with BOX, the equity options market. According to reports, the transaction merges the two trading venues into a single operating entity, with Canada’s TMX Group gaining control of the combined exchange. Both outlets describe MEMX as part of a broader effort to consolidate equity and options trading infrastructure, while keeping the merged structure under TMX Group’s leadership. The agreement is structured so that TMX Group is positioned as the controlling party following the combination. Bloomberg and the Financial Post both focus on the ownership and control aspect of the transaction, emphasizing that the backing behind MEMX does not translate into control of the merged business after the deal. The reports do not provide additional regulatory or financial details in the provided excerpts. Overall, the coverage is consistent that MEMX and BOX will be combined, and that TMX Group will hold control of the merged exchange entity.