DOW JONES NEWSWIRES ON Semiconductor Corp. (ONNN) said Monday it plans to buy back 30 million shares of stock over the next two years. Based on the stock's closing price of $11.08 a share on Friday, the stock buyback will weigh in at about $332 million. -Steve Gelsi; 415-439-6400; AskNewswires@dowjones.com (END) Dow Jones Newswires