SPDR Portfolio S&P 1500 Composite Stock Market ETF (NYSEARCA:SPTM – Get Free Report) saw a significant drop in short interest in January. SPDR Portfolio S&P 1500 Composite Stock Market ETF Stock Down 0.1%SPTM traded down $0.12 on Thursday, reaching $84.19. Get SPDR Portfolio S&P 1500 Composite Stock Market ETF alerts:Institutional Trading of SPDR Portfolio S&P 1500 Composite Stock Market ETFLarge investors have recently bought and sold shares of the company. About SPDR Portfolio S&P 1500 Composite Stock Market ETFThe SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) is an exchange-traded fund that is based on the S&P Composite 1500 index, a market-cap-weighted index selected by the S&P Committee that covers the entire US market cap spectrum. Featured ArticlesReceive News & Ratings for SPDR Portfolio S&P 1500 Composite Stock Market ETF Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for SPDR Portfolio S&P 1500 Composite Stock Market ETF and related companies with MarketBeat.com's FREE daily email newsletter.