PRTK (Common Stock) PriceChange% ChangeVolume$10.85 - 0.151.36%1,193,377Previous CloseToday's OpenIntraday HighIntraday Low$11.00$11.10$11.30$10.75Exchange: NASDAQ (US Dollar)04/23/18 4:00 p.m. ETData provided by Nasdaq. Minimum 15 minutes delayed.