Citigroup rises after Q1 profit beat

** U.S. lender Citigroup's C.N shares rise 1.2% to $63.98 premarket

** Citigroup beats Wall Street estimates for first-quarter profit as its traders reaped a windfall from volatile markets that fueled client activity

** Citi reports a net income of $4.1 bln, or $1.96 per share in Q1, analysts on average, expected $1.85, according to estimates compiled by LSEG

** Fixed income revenue, a major driver of Citi's markets business, jumps 8% to $4.5 bln, lifted by rates and currencies.

** As of the last close, Citi shares down ~10.2% YTD