Unusual and notably bullish option volume in this Chinese solar cell maker today, with triple the normal volume trading and virtually all of the volume involving in-the-money April 15 Calls. On the day 12368 of these contracts traded in relatively small lot sizes priced from $1.85 to $2.60, lifting implied volatility 10 points to 88% as the stock recovered an early $1 loss to end down 9cents. Earnings and a conference call are expected within the next two weeks, and today?s buyers look to be adding to long call positions that have been building recently.