Today, Advent Claymore Convertible Securities and Income Fund (NYSE: AVK) declared a supplemental year-end distribution of $0.221 per share. The distribution will consist solely of ordinary income and is being made at this time in order to allow the Fund to meet its distribution requirement for 2011. The supplemental distribution will be paid on December 30, 2011 to shareholders of record as of December 28, 2011, with an ex-dividend date of December 23, 2011.

Past performance is not indicative of future performance. If it is determined that a notification is required, pursuant to Section 19(a) of the Investment Company Act of 1940, as amended, such notice will be posted to the Fund's website after the close of business three business days prior to the payable date. Distributions may be comprised of sources other than income, which may not reflect actual Fund performance.

About Advent Capital Management

Founded in 1995, Advent Capital Management, LLC is recognized as a leader in the convertible space. Advent now manages approximately $6 billion in convertible, high yield and equity securities across three synergistic lines of business - long-only strategies, hedge fund strategies and closed-end mutual funds for corporations, public pension plans, foundations, endowments and high-net-worth individuals globally. The firm's investment team of 28 seasoned professionals is among the largest and most experienced in the industry. Advent's proficiency in investing across the entire capital structure is driven by the strength of its proprietary fundamental, bottom-up research. The firm's credit-driven research approach has been a core driver of its investment success.

About Guggenheim Investments

Guggenheim Investments represents the investment management division of Guggenheim Partners, LLC ("Guggenheim"), which consist of investment managers with approximately $115 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 offer 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 investments management entities within Guggenheim, which includes Guggenheim Funds Distributors, Inc. Guggenheim Funds Distributors, Inc. serves as Servicing Agent for AVK. The Investment Adviser for AVK is Advent Capital Management, LLC.

* Asset figure is based upon the best available information as of 9/30/2011 and consists of assets under management and serviced assets of the various asset managers comprising Guggenheim Investments. The total asset figure includes $8.7B of leverage for assets under management and $0.8B of leverage for serviced assets.

This information does not represent an offer to sell securities of the Fund and it is not soliciting an offer to buy securities of the Fund. There can be no assurance that the Fund will achieve its investment objective. The net asset value of the Fund will fluctuate with the value of its 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 the Fund is subject to certain risks and other considerations. Such risks and considerations may include, but are not limited to: Investment and Market Risk; Convertible Securities Risk; Management Risk, Structured and Synthetic Convertible Securities Risk; Lower Grade Securities Risk; Equity Securities Risk; Derivatives Risk; Interest Rate Risk; Leverage Risk; Anti-Takeover Provisions; Foreign Securities Risk; Foreign Currency Risk; Market Disruption Risk; Strategic Transactions Risk; Senior and Second Lien Secured Loan Risk, AMPS Risk and Illiquidity Risk.

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.guggenheimfunds.com or contact a securities representative or Guggenheim Funds Distributors, Inc. 2455 Corporate West Drive, Lisle, IL 60532, 800-345-7999.

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

Member FINRA/SIPC (12/11)

Guggenheim Investments
Media Inquiries:
Jeaneen Pisarra
917.386.0387
jpisarra@sgi-investors.com
or
Analyst Inquiries:
William T. Korver
630.505.3700
William.Korver@guggenheimfunds.com