Yeah, probably more than one. It is trading with a purpose, to undermine confidence and to trigger panic selling. Why all the effort on a penny stock like AMBS. That is the question with an easy answer. Some deeply committed individuals believe that the risk of manipulating the pps down is worth the reward of cheap shares they hope to dislodge from investors who panic. I know I have shared this before, but I can remember when DNDN was trading @ approximately $18.00 with news pending, and in the last 10 minutes or so of the trading day, MM;s drove the pps all the way down to just under $3.00 and it closed right at about $18.00. News hit the wire after the close,and AH it broke through 20, and as I remember traded upwards of $25. It within weeks was over $40.00
All of that to say, Manipulators will stop at nothing to accomplish their purposes. Do your own DD and drop your anchor if you believe! Like the old adage goes, "don't believe anything you hear, and only half of what you see!"