Inc. (MRKR) Marker Therapeutics, Inc. (MRKR) Seems To Be Turning Some Investors Off Marker Therapeutics, Inc. (MRKR) has seen some recent volatility in the marketplace and its shares closed at $1.3600 yesterday. Traders are starting to take notice of MRKR as the shares traded as high as $1.4000 and as low as $1.3200 in