This three-day volume growth resulted in a record-breaking increase of 181%, as compared to the 65-Day Volume Moving Average. PRTA's total volume now sits at 3.6M. The +1.06% price change was insignificant, leaving PRTA's price at $5.72. This volume move could indicate a change in trend, and may be a buy signal for investors. A.I.dvisor found 7 similar cases, 7 of which were successful. Based on this data, the odds of success are +90%.