Pioneer High Income Trust (the Trust) is a diversified closed-end management investment company. The Trust invests at least 80% of its assets in below investment grade (high-yield) debt securities, loans and preferred stocks. The Trust's portfolio includes corporate bonds and notes, municipal bonds, temporary cash investments, sovereign debt obligations, municipal collateralized debt obligations, collateralized mortgage obligations, convertible bonds and warrants. The Trust invests in various sectors, including diversified financials, energy, materials, capital goods, commercial services and supplies, transportation, automobiles and components, consumer durable and apparel, consumer services, media, retailing, food and staples retailing, food, beverage and tobacco, and health care equipment and services. The Trust may invest up to 50% of its total assets in illiquid securities. Pioneer High Income Trust's investment advisor is Pioneer Investment Management, Inc.