The head of trading analytics at IHS Markit - a market structure expert with more than 30 years' experience - has left the firm.

David Weisberger departed in January 2017, a spokeswoman for IHS Markit confirmed. He had been in charge of the unit at the London-based data and analytics firm that provides services including transaction cost analysis, measuring best execution, and research signals - stock rankings based on 400 factors globally.