This four-day volume growth resulted in a record-breaking increase of 158%, as compared to the 65-Day Volume Moving Average. PTGX's total volume now sits at 2.5M. The +2.45% price change was insignificant, leaving PTGX's price at $121.88. This volume move could indicate a change in trend, and may be a buy signal for investors. A.I.dvisor found 10 similar cases, 7 of which were successful. Based on this data, the odds of success are +70%.