ZURICH (Reuters) - The head of Credit Suisse (SIX: CSGN )'s securities joint venture in China, Tim Tu, has stepped down to pursue other opportunities within the Swiss bank, a spokeswoman said. Daniel Qiu has been appointed interim CEO of the CSSCL venture, effective immediately. He assumes the role alongside his existing responsibilities as Head of Investment Banking & Capital Markets (IBCM) at CSSCL. Tu was appointed CEO of CSSCL in July 2020 after Credit Suisse obtained a majority stake in the joint venture.