The stock market has been tanking all week, but that's not keeping financial firm Needham & Co. from being bullish on Apple. The company raised its price target for AAPL from US$450 to $540.
So why the big jump? Needham's Charlie Wolf notes that the firm adjusted how it values Apple's different businesses and product lines. The iPad, for example, is now estimated to contribute about 12.2 percent to the value of Apple stock. That's up from the previous estimate, based on a new assumption that the iPad will continue to c
