Adrian Griffiths joins MEMX as head of market structure after the new US equities exchange increased its market share significantly last month.
US challenger exchange MEMX currently has 541 symbols trading as it prepares to go live in all NMS names this week.
The MEMX and MIAX equities data feeds will become active with MayStreet as both exchanges officially launch on 21 and 25 September respectively.
New exchange group launched by various major financial institutions has said it will now begin trading on 21 September.
The COVID-19 pandemic is disrupting the evolution of the US equity market structure causing current exchanges to lose trading volumes and upending plans for new ones to launch.
MEMX has added Citi as an investor as it gains FINRA approval for broker-dealer routing ahead of its launch in September.
US trading venue MEMX is set to take on incumbent exchanges Nasdaq and NYSE as it confirms September launch date.
BlackRock, Wells Fargo and Flow Traders are among those backing US challenger exchange group MEMX in recent funding round.
US Securities and Exchange Commission gives new exchange MEMX the green light to operate its trading venue.
Testing on the new MEMX exchange has been delayed due to disruption caused by the coronavirus pandemic, but venue plans to launch in the third quarter.