Google Walks Past $400

Updated from 9:35 a.m. EST

Google's (GOOG Quote) march on $400 is complete.

When last month's third-quarter earnings blowout prompted some analysts to predict the stock would top $400, skeptics were quick to emerge. After all, Google shares already looked gaudy, fetching $303 apiece heading into the company's Oct. 20 financial report.

But now Google is up more than 350% since its public offering last year and the stock opened at $401.68 Thursday. Many investors clearly expect the stock to continue its upward trajectory. Volume in out-of-the-money Google calls is rising, indicating that people expect the stock to keep jumping. ...