Apple Shares Lose Shine - WSJ.com

As Apple goes, so goes the Nasdaq

"Apple's shares plunged 4.1% on Monday, extending their slide to a fifth consecutive day and sparking worries about whether the maker of iPads and iPhones may be headed for a bigger descent. Apple is now down 9.9% from its intraday peak of $644 hit on April 10, just shy of the 10% level that market watchers call a "correction." On Monday, Apple fell $25.10, to $580.13, in 4 p.m. Nasdaq Stock Market composite trading.
The past five days' decline has seen more than $50 billion shaved off Apple's market capitalization. That is more than Hewlett-Packard Co.'s entire market cap of about $48 billion."

Apple Shares Lose Shine - WSJ.com