Take a look at ISCO. Cox was a huge supporter of the company and he helped drive the price up from just over a buck to close to $2.00 in short order. Then, early last week, he suddenly issued a sell order (apparently he was required by his publisher to cease coverage of the stock and issue a sell recommendation because he has an equity interest in a company) and instantly the pps dove from a high of $2.00 to a low of $1.37. It now sits at 1.55.
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