Most valuable US stocks
1. Apple Inc.
Ticker information: AAPL
Current market cap: $342.39 billion
Apples ascension caps a 14-year transformation from a personal-computer also-ran into a seller of everything from smartphones to digital music. Apple has already eclipsed Microsoft Corp., IBM Corp., and Intel Corp., whose dominance of the technology industry in the 1990s helped nudge Apple to the fringes of the PC market.
Left: Apple CEO Steve Jobs in April 2010.