FDA approval, interim safety data, ERs... All is important; but in penny stocks, in OTC market, the most important catalyst is simply... SPECULATION. DCTH could reach $600 million in capitalisation with zero product and in 2010, when all was still far from any FDA approval. From 2010 until now, many times into $500 / 150 million area. Just in june, capitalisation reached between 50 and 100 million. We don't have to wait until FDA approval, nor anything; price can fly on nothing but speculation, as it always did.
With FDA approval.... 15,000% and more. There were other cases.
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