Stock prices and share ticker

Nasdaq falling side…

On the falling side, shares of Nvidia Corp. (nasdaq: NVDA) plunged $5.54, or 30.7 percent, to $12.49 after the graphics chip maker lowered its second-quarter revenue outlook. Earlier in the session, shares touched a 52-week low of $12.40.

Shares of Leap Wireless International (nasdaq: LEAP) Inc. lost $4.25, or 10.5 percent, to $36.42. Rival low-cost wireless carrier MetroPCS Communications (nyse: PCS) Inc. posted disappointing subscriber numbers for its second quarter Thursday.