Top Morgan Stanley electronic trading executive Brian Gallagher has left the firm

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• Brian Gallagher, a top Morgan Stanley electronic trading executive, has left the firm after 15 years.
• Gallagher, a senior sales person who formerly headed European trading at the bank, departed in recent weeks.
• A Morgan Stanley spokesman declined to comment on Gallagher’s exit. 

A top electronic trading executive at Morgan Stanley has left the firm after 15 years, according to people familiar with the matter. 

Brian Gallagher, a managing director of sales in Morgan Stanley’s equities electronic trading business who was with the firm since 2003, exited the bank in recent weeks. 

Gallagher formerly headed European electronic trading at the bank. 

A Morgan Stanley spokesman declined to comment on Gallagher’s departure from the bank and Gallagher did not respond to a request for comment.

Gallagher was part of Morgan Stanley’s star equities division which is the top stock trading business on Wall Street ahead of Goldman Sachs and JPMorgan.  These firms are locked in an arms race to improve their technology to grab market share in a global revenue pool for equities trading that generated $41.8 billion in 2017, according to data provider Coalition.