MRKR - Marker Therapeutics: Passing Through A Catalyst Desert October, 22 2021 08:00 AM Marker Therapeutics Inc. MRKR has been trading downwards and sideways for months now. I was asked to see if I can figure out why. It appears that there's a catalyst desert that's been taking its toll on the stock's performance. For further details see: Marker Therapeutics: Passing Through A Catalyst Desert