BlackRock Limited Duration Income Trust is a close ended fixed income mutual fund launched by BlackRock Inc It is managed by BlackRock Advisors LLC The fund invests in fixed income securities of the United States It invests in securities of companies operating across diversified sectors The fund primarily invests in investment grade corporate bonds mortgagerelated securities assetbacked securities US Government and agency securities and senior secured floating rate loans It has an average portfolio duration of less than five years The fund benchmarks the performance of its portfolio against the Lehman Brothers US Aggregate Index BlackRock Limited Duration Income Trust was formed on July 31 2003 and is domiciled in the United States