Alcan, the aluminum producer, said that it would buy back up to 5 percent of its shares beginning next month.

The company has retained warrants entitling it to buy back up to 47 percent of the restaurant group.

On Friday, after the fund's board announced plans to buy back up to 25 percent of its shares next quarter, its price rose to $6.27.

The company also said it had ended its plan to buy back up to 50 percent of its stock.

The retail chain said that it might buy back up to 11 percent of its common shares outstanding.

Japanese institutions are said to buy as much as 30 to 40 percent of the paper at Treasury auctions.

The company said it wanted to buy back up to 10 percent of its stock, which has slipped by 18 percent in the last year.

The casino and hotel operator said it would buy back up to 31 percent of its stock for up to $34 a share in cash.

Companies Coca-Cola plans to buy back up to 10.6 percent of its stock, or about 40 million shares.

Analysts raised their earnings estimates after the company said it would buy back up to 10 percent of its common stock.