Apple shares hit an all-time high on Thursday, a day after the retail and technology bellwether said it sold more than 600,000 iPhone 4s.

Shares hit US$272.90 before slipping to $270.96, up 1.4 percent for the day. And as noted by “Fortune” (, the analysts have been bumping up their share price targets. Here are the ones we’ve heard about; we’ll add more as they come in:

Kaufman Bros.’ Shaw Wu raised his estimate from $320 to $340. Piper Jaffray’s Gene Munster: raised his to $348 from $340. And Caris and Co.’s Robert Cihra upped his from $310 to $325.