Which companies are memx members? These members include Bank of America Merrill Lynch, Charles Schwab, Citadel Securities, E*TRADE, Fidelity Investments, Morgan Stanley, TD Ameritrade, UBS and Virtu Financial. The nine participating founding members of MEMX announced plans to file an application with the U.S. Securities and Exchange Commission (SEC) in early 2019.How do i contact mex customer service? Ph:+ 61 7 3392 4777 Fax:+ 61 7 3392 4888 Sales:[email protected] Support:[email protected] Training:[email protected] General Inquiries:[email protected] Home· MEX· Services· Downloads· Contact Us © 2021 Maintenance Experts.Will memx become a national securities exchange? The nine participating founding members of MEMX announced plans to file an application with the U.S. Securities and Exchange Commission (SEC) in early 2019. If approved, MEMX will operate as a national securities exchange.Is memx in talks with iex ceo ronan ryan? Late last year, MEMX was rumored to be in preliminary talks with industry executives one of which was said to be Ronan Ryan, the president of rival exchange IEX, a source familiar with the talks told The Post. Nothing came from the Ryan discussion despite IEX’s relatively small market share of 2.6 percent, the source said.