Thinking about buying stock in Akari Therapeutics, Presbia Plc, Roku Inc., Snap Inc., or Pareteum Corp.? PR Newswire NEW YORK, March 14, 2019 NEW YORK , March 14, 2019 /PRNewswire/ -- InvestorsObserver issues critical PriceWatch Alerts for AKTX, LENS, ROKU, SNAP, and TEUM. To see how InvestorsObserver's proprietary scoring system rates these stocks, view the InvestorsObserver's PriceWatch Alert by selecting the corresponding link. AKTX:...