Reuters reports Reggie Browne is leaving KCG Holdings Inc., the trading company created after Getco Holding Co. bought Knight Capital Group for $1.4 billion.

Read: Knight Capital receives lifeline after trading error

Browne headed up the ETF team and is leaving because he and the firm couldn’t agree on new contract terms, according to the report. Two other ETF managers, Eric Lichtenstein and Darren Taube, are also leaving for the same reason.

“Those three guys know more about ETF trading than most of us will ever learn,” Dave Nadig, president of IndexUniverse LLC’s ETF Analytics told Reuters.

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