Invesco Municipal Opportunity Trust is a closed-ended fixed income mutual fund launched by Invesco Ltd. The fund is co-managed by Invesco Advisers, Inc, INVESCO Asset Management (Japan) Limited, INVESCO Asset Management Deutschland GmbH, INVESCO Asset Management Limited, Invesco Australia Limited, Invesco Canada Ltd., Invesco Hong Kong Limited, and INVESCO Senior Secured Management, Inc. It invests in the fixed income markets of the United States. The fund primarily invests in investment grade municipal securities which have income that is exempt from federal income tax. It was formerly known as Invesco Van Kampen Municipal Opportunity Trust. Invesco Municipal Opportunity Trust was formed on April 24, 1992 and is domiciled in the United States.