MZF Managed Duration Investment Grade Municipal Fund (delisted)

Guggenheim Investments today announced that certain closed-end funds have declared their distributions. The table below summarizes the distribution schedule for each closed-end fund (collectively, the "Funds" and each, a "Fund").

The following dates apply to the distributions:

Record Date	June 13, 2014
Ex-Dividend Date	June 11, 2014
Payable Date	June 30, 2014

Distribution Schedule
NYSE Ticker	Closed-End Fund Name	Distribution Per Share	Change from Previous Distribution	Frequency
AGC	Advent Claymore Convertible Securities and Income Fund II	$0.047		Monthly
AVK	Advent Claymore Convertible Securities and Income Fund	$0.0939		Monthly
GBAB	Guggenheim Build America Bonds Managed Duration Trust	$0.13817		Monthly
GGM	Guggenheim Credit Allocation Fund	$0.1713		Monthly
GOF	Guggenheim Strategic Opportunities Fund	$0.1821		Monthly
GPM	Guggenheim Enhanced Equity Income Fund	$0.24		Quarterly
MZF	Managed Duration Investment Grade Municipal Fund	$0.065	($0.005)	Monthly
WIA	Western Asset/Claymore Inflation-Linked Securities & Income Fund	$0.032		Monthly
WIW	Western Asset/Claymore Inflation-Linked Opportunities & Income Fund	$0.0335		Monthly

Past performance is not indicative of future performance. As of this announcement, the sources of each fund distribution are estimates. Distributions may be paid from sources of income other than ordinary income, such as short term capital gains, long term capital gains or return of capital. If a distribution consists of something other than ordinary income, a Section 19(a) notice detailing the anticipated source(s) of the distribution will be made available. The Section 19(a) notice will be posted to the Fund's website and to the Depository Trust & Clearing Corporation so that brokers can distribute such notices to Shareholders of the Fund. Section 19(a) notices are provided for informational purposes only and not for tax reporting purposes. The final determination of the source and tax characteristics of all distributions in 2014 will be made after the end of the year. This information is not legal or tax advice. Consult a professional regarding your specific legal or tax matters.

About Guggenheim Investments

Guggenheim Investments represents the investment management division of Guggenheim Partners, LLC ("Guggenheim"), which consists of investment managers with approximately $172 billion in combined total assets*. Collectively, Guggenheim Investments has a long, distinguished history of serving institutional investors, ultra-high-net-worth individuals, family offices and financial intermediaries. Guggenheim Investments offers clients a wide range of differentiated capabilities built on a proven commitment to investment excellence. Guggenheim Investments has offices in Chicago, New York City and Santa Monica, along with a global network of offices throughout the United States, Europe, and Asia.

Guggenheim Investments is comprised of several investment management entities within Guggenheim, which includes Guggenheim Funds Distributors, LLC and Guggenheim Funds Investment Advisors, LLC (together, "Guggenheim Funds"). Guggenheim Funds Investment Advisors, LLC serves as Investment Adviser for AGC, GBAB, GGM, GOF, GPM, and WIW. Guggenheim Funds Distributors, LLC serves as Servicing Agent for AVK, MZF and WIA. The Investment Advisers for AVK, MZF and WIA are Advent Capital Management, LLC, Cutwater Investor Services Corporation and Western Asset Management Company, respectively.

* Guggenheim Investments total asset figure is as of 12.31.2013 and includes $12.497B of leverage for Assets Under Management and $0.390B of leverage for Serviced Assets. Total assets include assets from Security Investors, LLC, Guggenheim Partners Investment Management, LLC, Guggenheim Funds and its affiliated entities, and some business units including Guggenheim Real Estate, LLC, Guggenheim Aviation, GS GAMMA Advisors, LLC, Guggenheim Partners Europe Limited, Transparent Value Advisors, LLC, and Guggenheim Partners India Management. Values from some funds are based upon prior periods.

This information does not represent an offer to sell securities of the Funds and it is not soliciting an offer to buy securities of the Funds. There can be no assurance that the Funds will achieve their investment objectives. Investments in the Funds involve operating expenses and fees. The net asset value of the Funds will fluctuate with the value of the underlying securities. It is important to note that closed-end funds trade on their market value, not net asset value, and closed-end funds often trade at a discount to their net asset value. Past performance is not indicative of future performance. An investment in closed-end funds is subject to investment risk, including the possible loss of the entire amount that you invest. Some general risks and considerations associated with investing in a closed-end fund include: Investment and Market Risk; Lower Grade Securities Risk; Equity Securities Risk; Foreign Securities Risk; Interest Rate Risk; Illiquidity Risk; Derivative Risk; Management Risk; Anti-Takeover Provisions; Market Disruption Risk and Leverage Risk. In addition, MZF is subject to AMPS Risk. See www.guggenheiminvestments.com/cef for a detailed discussion of fund-specific risks.

Investors should consider the investment objectives and policies, risk considerations, charges and expenses of any investment before they invest. For this and more information visit www.guggenheiminvestments.com or contact a securities representative or Guggenheim Funds Distributors, LLC 227 West Monroe Street, Chicago, IL 60606, 800-345-7999.

NOT FDIC-INSURED | NOT BANK-GUARANTEED | MAY LOSE VALUE

Member FINRA/SIPC (6/14)

CONTACT: Analyst Inquiries
         William T. Korver
         william.korver@guggenheiminvestments.com