Credit Suisse has parted ways with a senior figure in its electronic trading business at a crucial time for banks, which are grappling with how to bring e-trading practices commonly used in equities to other asset classes.

Nas Al-Khudairi, Credit Suisse's head of global markets electronic products, is leaving after more than two decades at the Swiss bank, according to a memo reviewed by Financial News. A spokeswoman for the bank confirmed the memo's contents.