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SHAREHOLDER UPDATES

Q1 2008 Shareholder Presentation

2008 Proxy Statement

2007 Annual Report

American Capital Announces Tax Status of 2007 Dividends

AMERICAN CAPITAL NEWS

American Capital Declares $1.03 Q2 2008 Dividend Reports $0.77 NOI and $0.94 Realized Earnings in Q1 2008

American Capital Reorganizes Sponsor Finance Group: Opens Boston Office, Reorganizes Northeast and California

More American Capital News »

PRESS COVERAGE

American Capital Portfolio Company Confluence's new CEO aims to boost sales, The Greenville News

On the Record: Samuel Flax, Legal Times

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NEWSLETTER

American Capital Newsletter

STOCK RETURNS CALCULATOR

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American Capital is the only private equity fund and the largest alternative asset management company that is a member of the S&P 500. With $19 billion in capital resources under management, American Capital is the largest U.S. publicly traded alternative asset manager.

American Capital, both directly and through its global asset management business, is an investor in management and employee buyouts, private equity buyouts, and early stage and mature private and public companies. American Capital provides senior debt, mezzanine debt and equity to fund growth, acquisitions, recapitalizations and securitizations. American Capital and its affiliates invest from $5 million to $800 million per company in North America and €5 million to €500 million per company in Europe.

Investment Value - Click for Details

ACAS closed at $34.16 on 3/31/2008

* Includes reinvested dividends calculated based on close price one day prior to payment date.

** Source: FactSet. Includes reinvested dividends as of ex-dividend date.

*** Consumer Price Index (CPI-U) through 2/29/2008.

Since its August 1997 IPO, American Capital and the funds it manages have invested approximately $28 billion in over 475 portfolio companies. Our diverse portfolio is invested in virtually every industry sector. We have over 240 investment professionals in 12 offices in the United States and Europe.

As a publicly traded company, we offer shareholders an opportunity to invest in privately held middle market companies through ownership of our stock. American Capital has paid or declared $28.20 per share in dividends since going public in 1997, and has provided a 18% annualized return and a 490% total return over that time, assuming dividends are reinvested.