GW Pharmaceuticals could trade up 25% on data, says Leerink Leerink believes shares of GW Pharmaceuticals could trade up 25% should the Epidiolex data in pediatric epilepsy show a seizure reduction materially greater than 44%. The data is expected in the second half of 2014. The firm says shares could trade up 15% higher on a reduction at or close to 40%, or 15% lower if the mean reduction is in the 20%-30% range. Leerink is bullish ahead of the data readout after reviewing the cannabidiol epilepsy literature and previous anti-epileptic drug trials. It has an Outperform rating on shares of GW Pharmaceuticals with a $110 price target.