Och-Ziff Capital Management Group LLC, the hedge fund that’s under investigation by U.S. authorities over whether it broke anti-bribery laws, plans to cut management fees for its main funds, people with knowledge of the matter said. The firm will trim the fees by 25 basis points for its OZ Master, Asia and Europe multi-strategy funds, said the people, who asked not to be identified because the information is private. The cuts will be...