Strong sales of Apple’s iPod mini have fueled a 22 percent increase in the company’s stock in the past two weeks. Bloomberg notes that Apple’s stock had increased in 10 of the past 12 trading days before yesterday and as of Wednesday was the best performer in the Standard & Poor’s 500 index this month. The article also points out that Apple’ flagship store in San Francisco has twice run out of the iPod mini since opening 12 days ago. “We sell iPod minis like crazy, and it’s been a wonderful hit for us,” said Travis Fears, a floor manager at the Apple Store. “We have been thrilled so far.” We noted last week that the iPod mini was virtually sold out after less than two weeks in stores, with nearly 100,000 of the digital music players being bought up.