The office of Alibaba (China) Technology Co.

The bulls are coming back to the China shop, looking for a rally in e-commerce stock Sina.

OptionMonster’s tracking programs detected the purchase of 10,000 December 80 calls for $1.88 and the sale of 10,000 December 90 calls for $0.78. There was virtually no open interest in either contract before the trade appeared, so this is a new position.