JP Morgan analyst Mark Moskowitz has assigned a new, higher $420 price target to Apple stock, suggesting that the Mac will once again play an important or even dominant role in Apple growth. "While the iPhone and iPad are expected to be the biggest contributors to revenue growth in the near to mid term, the Mac business is expected to be an important contributor as well," he writes in a memo. "By the end of (fiscal year) 2011, we expect the Mac to regain prominence in the Apple growth story as the company addresses the multi-billion dollar opportunity in the Target