Shares of TIM Participacoes SA (NYSE:TSU) saw a significant growth in short interest during the month of September. As of September 30th, there was short interest totalling 2,937,939 shares, a growth of 334.0% from the September 15th total of 676,921 shares, Stock Ratings News reports. Based on an average daily volume of 1,738,630 shares, the short-interest ratio is currently 1.7 days. Approximately 0.0% of the … Continue reading Top Wall Street Stories: TIM Participacoes S.A. (NYSE:TSU), DD, Insignia Systems Inc. (NASDAQ:ISIG), World Energy Solutions, Inc. (NASDAQ:XWES), Union Bankshares, Inc. (NASDAQ:UNB)