NEW YORK, Dec 31: Citigroup Inc. was Wall Street’s busiest stock and bond underwriter for the sixth straight year in 2005 as a healthy economy, low interest rates and investor demand drove securities issuance to a record.

Amid strong demand for fixed-income securities, worldwide stock and bond underwriting totaled $6.51 trillion, 13pc higher than a year earlier, Thomson Financial data released on Friday showed. —Reuters