SPDR S&P Semiconductor ETF ( XSD) - 1.3% Semiconductors are sliding into the close, weighed down as investors steer clear of stocks. It has been a rough couple of weeks for the semis. Over the past 10 trading sessions, shares of XSD have seen only two days of upward action. The fund looks set to close out the week trading at levels seen at the end of 2010. All prices as of 2:15 PM EST Written by Don Dion in Williamstown, Mass.