Shares of ZIOPHARM Oncology (NASDAQ:ZIOP) saw a significant decrease in short interest in December. As of December 15th, there was short interest totalling 17,601,779 shares, a decrease of 5.8% from the November 28th total of 18,695,183 shares, AnalystRatingsNetwork.com reports. ZIOPHARM Oncology, Inc. (NASDAQ:ZIOP) belongs to Healthcare sector. Its weekly performance is 8.10%. On last trading day company shares ended up $5.07. ZIOPHARM Oncology, Inc. (NASDAQ:ZIOP) … Continue reading Top Morning News: ZIOPHARM Oncology, Inc. (NASDAQ:ZIOP), Barrick Gold Corporation (NYSE:ABX), FireEye, Inc. (NASDAQ:FEYE), Cass Information Systems (NASDAQ:CASS), Power Solutions International (NASDAQ:PSIX)