The onetime corporate raider is taking a fellow billionaire to court over a leveraged buyout gone bad.

Carl Icahn, the billionaire investor, bought nearly seven million additional shares of Yahoo in a move likely to fuel speculation over Yahoo’s search for a new chief executive.

Some readers argued that Carl C. Icahn wasn’t practicing what he preached when he took on Yahoo. They have a point.

Yahoo said that it would add the former chief executives of Viacom and Nextel Partners to its board as part of the company’s deal to avoid a proxy fight with the investor Carl C. Icahn.

Stock in WCI Communities lost almost all its value after the company filed for bankruptcy protection after failing to obtain financing to stay afloat.

With the stock down, many shareholders are questioning whether Jerry Yang is the right man to lead Yahoo.

Time Warner said the nomination of Jonathan Miller, the former chairman and chief executive of its AOL Internet unit, violated a non-compete agreement entered with Mr. Miller.

If they only had been more patient investors of ImClone Systems, Martha Stewart and others might have done just fine, and avoided jail time.

If they only had been more patient investors of ImClone Systems, Martha Stewart and others might have done just fine, and avoided jail time.

Yahoo said that its revenue in the second quarter grew a sluggish 6 percent from the same period a year earlier as profits fell.