Shares of Apple (AAPL) climbed as high as US$54.77 in early trading today after Pacific Crest Securities analyst Steve Lidberg raised his target price on Apple to $63 a share. Lidberg’s increase was due to a 2006 earnings estimate of $1.65 a share, improved shipment times for the iMac G5 and the upward look for Apple’s margins over the next two years.