How High Can Google Go?

Share price as of Thursday's close: $303.20
Share price now: $339.90
Change: 12.1%
Volume: 22.9 million shares, daily average 7.3 million shares
Last time this high: All-time high
52-week high: $321.28
52-week low: $141.62
Forward P/E before announcement: 47.2 (based on $6.43 a share)
Forward P/E after announcement: 52.9 (based on $6.43 a share)

Shares of Google (GOOG) jumped 12% to an all-time high of $339.90 Friday after the Internet giant blew away Wall Street's third-quarter estimates with a sevenfold surge in profits and a doubling of sales. Analysts tripped over each other in the rush to issue the rosiest research report. Lehman Brothers, First Albany and RBC Capital Markets each lifted their 12-month price targets to $450, despite the fact that the stock has already gained 76% year-to-date. ...