Visa Inc. (NYSE: V) announced today that it has priced the initial public offering of 406,000,000 shares of Class A common stock at $44 per share. Visa's shares will begin trading on March 19, 2008, on the New York Stock Exchange under the ticker symbol "V".

Credit-card processing giant Visa Inc. released the proposed terms of its long-expected initial public offering Monday, saying it plans to sell as much as $17 billion in stock, which would make the Visa IPO the biggest IPO in U.S. history.

Athenahealth, Inc. (Nasdaq:ATHN), today announced the pricing of its initial public offering of 6,286,819 shares of its common stock at a price to the public of $18.00 per share.

KKR & Co. L.P. (KKR) announced on June 3rd that it has filed a registration statement with the Securities and Exchange Commission (SEC) for a proposed initial public offering of its common units representing limited partner interests in its partnership.

The Blackstone Group L.P. announced today that it has filed a registration statement with the Securities and Exchange Commission for a proposed initial public offering of common units representing limited partner interests in The Blackstone Group. The firm intends to apply to list its common units on the New York Stock Exchange.