Credit Suisse First Boston has promoted Chris Carter, head of equity trading, equity derivatives and convertible sales and trading for the Asia Pacific region in Hong Kong, to global head of equity options. Carter, who will work from the firm's New York office, replaces Maurits Schouten, who resigned about three weeks ago, according to a firm official. Carter reports to Phil Vasan and Paul Calello, co-heads of CSFB's global equity derivatives and convertibles group. Calls to Carter, Vasan and Calello were referred to CSFB spokeswoman Victoria Harmon, who declined to comment.