S&P 500 ends down week with flat session, semis fall

The S&P 500 closed flat on Friday but ended lower for the week, with investors cautious ahead of a meeting in Europe that could decide whether Greece will default on critical loans. The Dow closed higher, boosted by strong results from component Nike Inc , while the Nasdaq ended solidly lower on disappointing results from Micron Technology Inc , which weighed on chipmakers like Intel. In Europe, Greece rejected a five-month extension of bailouts on Friday, a day before euro zone finance mini