Nuveen Municipal Credit Income 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 Nuveen Asset Management, LLC. It invests in the fixed income markets of the United States. The fund invests in undervalued municipal securities and other related investments the income from which is exempt from regular federal income taxes. It seeks to invest in investment grade securities rated Baa/BBB or better with an average maturity of around 18 years. The fund employs fundamental analysis with a focus on bottom-up stock picking approach to create its portfolio. It benchmarks the performance of its portfolio against Standard & Poor's (S&P) National Municipal Bond Index. It was formerly known as Nuveen Enhanced Municipal Credit Opportunities Fund. Nuveen Municipal Credit Income Fund was formed on March 21, 2001 and is domiciled in the United States.

Invesco Quality Municipal Income 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 Deutschland GmbH, INVESCO Asset Management Limited, INVESCO Asset Management (Japan) Limited, Invesco Hong Kong Limited, INVESCO Senior Secured Management, Inc., and Invesco Canada Ltd. It invests in the fixed income markets of the United States. The fund primarily invests in investment grade municipal securities which include municipal bonds, municipal notes, and municipal commercial paper. It employs fundamental analysis with bottom-up security selection approach to create its portfolio. The fund was previously known as Morgan Stanley Quality Municipal Income Trust. Invesco Quality Municipal Income Trust was formed on September 29, 1992 and is domiciled in the United States.

Nuveen Taxable Municipal Income 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 Nuveen Asset Management, LLC. It invests in the fixed income markets of the United States. The fund also invests some portion of its portfolio in derivative instruments. It invests in Build America Bonds, i.e. taxable municipal securities. The fund employs fundamental analysis with bottom-up and top-down stock picking approach to create its portfolio. It benchmarks the performance of its portfolio against the Barclays Capital Build America Bond Index. The fund was formerly known as Nuveen Build America Bond Fund. Nuveen Taxable Municipal Income Fund was formed on December 4, 2009 and is domiciled in the United States.

Putnam Managed Municipal Income Trust is a close-ended fixed income mutual fund launched and managed by Putnam Investment Management LLC. It is co-managed by Putnam Investments Limited. The fund invests in the fixed income markets of the United States. It primarily invests in a diversified portfolio of tax-exempt municipal securities, including high-yield securities that are rated below investment grade. The fund benchmarks the performance of its portfolio against the Barclays Municipal Bond Index. Putnam Managed Municipal Income Trust was formed on February 24, 1989 and is domiciled in the United States.

Invesco Municipal Income Opportunities 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 Deutschland GmbH, INVESCO Asset Management Limited, INVESCO Asset Management (Japan) Limited, Invesco Hong Kong Limited, INVESCO Senior Secured Management, Inc., and Invesco Canada Ltd. It invests in the fixed income markets of the United States. The fund primarily invests in municipal bonds rated BB or better by Standard & Poor's or Ba or better by Moody's. It employs fundamental analysis with bottom-up security selection approach to create its portfolio. The fund was previously known as Morgan Stanley Municipal Income Opportunities Trust. Invesco Municipal Income Opportunities Trust was formed on September 19, 1988 and is domiciled in the United States.

RiverNorth/DoubleLine Strategic Opportunity Fund, Inc. is a closed ended fixed income mutual fund launched and managed by RiverNorth Capital Management, LLC. The fund is co-managed by DoubleLine Capital LP. It invests in fixed income markets. The fund seeks to benchmark the performance of its portfolio against the Barclays Capital U.S. Aggregate Bond Index. RiverNorth/DoubleLine Strategic Opportunity Fund, Inc. was formed on December 30, 2010 and is domiciled in the United States.

PIMCO Municipal Income Fund is a closed ended fixed income mutual fund launched and managed by Allianz Global Investors Fund Management LLC. It is co-managed by Pacific Investment Management Company LLC. The fund invests in the fixed income markets of the United States. It seeks to invest in stocks of companies operating across diversified sectors. The fund primarily invests in investment grade municipal bonds. It employs fundamental analysis with a top down stock picking approach to create its portfolio. It conducts in house research using proprietary models. PIMCO Municipal Income Fund was formed on June 29, 2001 and is domiciled in the United States.

Nuveen Select Maturities Municipal 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 Nuveen Asset Management, LLC. It invests in the fixed income markets of the United States. The fund invests primarily in municipal securities rated Baa/BBB or better. It invests in securities that provide income exempt from federal income tax. The fund employs fundamental analysis with bottom-up stock picking approach to create its portfolio. It benchmarks the performance of its portfolio against the S&P Intermediate Municipal Bond Index and the S&P National Municipal Bond Index. Nuveen Select Maturities Municipal Fund was formed on September 18, 1992 and is domiciled in the United States.