Nuveen Floating Rate Income Opportunity Fund is a closed-ended fixed income mutual fund launched by Nuveen Investments, Inc. The fund is co-managed by Nuveen Fund Advisors LLC and Symphony Asset Management LLC. It invests in fixed income markets of the United States. The fund invests in adjustable rate loans, primarily in senior loans. It benchmarks the performance of its portfolio against the Barclays U.S. Aggregate Bond Index and CSFB Leveraged Loan Index. Nuveen Floating Rate Income Opportunity Fund was formed on April 27, 2004 and is domiciled in the United States.