Pioneer High Income Trust is a closed ended fixed income mutual fund launched and managed by Pioneer Investment Management, Inc. It invests in the fixed income markets of the United States. The fund primarily invests in below-investment-grade bonds, high-yield corporate bonds and convertible securities. It invests in fixed income securities with average credit quality of B. The fund benchmarks the performance of its portfolio against the Merrill Lynch High Yield Master II Index. Pioneer High Income Trust was formed on January 30, 2002 and is domiciled in the United States.