TradingScreen has formed partnerships with other major firms to bolster its OEMS and TradeSmart services.
ITG said in its second quarter earnings report that the SEC is investigating POSIT and could hand the broker a $12 million fine.
Jamie Selway joins Blockchain as global head of institutional markets after spending seven years at agency broker ITG.
Block trades accounted for a record 51.9% of dark trading last week, according to statistics from Fidessa.
Research from ITG shows equity trading volumes falling for dark MTFs as volume caps take hold.
Updated dark pool data finds breaches for 58 equities for the 8% cap and 10 equities for the 4% cap.
Ever-increasing costs on sell-side institutions will see more consolidation and deeper partnerships, according to a keynote discussion panel at TradeTech.
Jamie Selway leaves ITG after nearly eight years with the agency broker.