Major right-wing donor Bob Mercer is leaving his hedge fund and selling his stake in Breitbart

Hedge-fund billionaire and major conservative donor Robert Mercer is stepping down from his position as co-CEO of Renaissance Technologies.

He did not give a reason for his departure.

Bloomberg reported Thursday that in addition to leaving his position at Rentech, Mercer will also sell his stake in the far-right news website Breitbart News to his daughter Rebekah Mercer.

This story will be updated.