Before the bell: AAPL, WMT, JNJ, ABT ...

Wal-Mart Stores Inc. (NYSE: WMT) shares are up over 3.5% in premartket trading after the world's largest retailer reported a 1.4% rise in September sales at U.S. stores open at least a year, toward the low end of its forecast. Analysts were expecting a 1.9% rise according to Reuters. Wal-Mart, however, raised its third-quarter earnings estimate to 66 cents to 69 cents per share, up from a previous forecast of 62 cents to 65 cents.

Apple Inc. (NASDAQ: AAPL) is up nearly 1.4% in premarket trading. Apple 2.0 reports on a Bernstein analyst note that claims Apple has 29% market share of the top priced notebooks. He points out to a few strengths -- like the growth it has achieved in PCs -- and vulnerabilities -- like having a dominant market share in some areas without much room for growth.

Google Inc. (NASDAQ: GOOG) shares continue to set daily records. After finishing the day up 1.66% yesterday to $625.39, shares are trading up another 1% in premarket action. Google has surpassed Wal-Mart's market cap!

Johnson & Johnson (NYSE: JNJ) J&J's McNeil-PPC unit voluntarily recalled certain infant cough and cold products, citing "rare" instances of misuse leading to overdoses "particularly in infants under two years of age."

Wachovia Capital Markets downgraded its rating on Abbott Laboratories Inc (NYSE: ABT) to Market Perform from Outperform, citing a large number of challenges facing the company's key franchises, like possible delay of Abbott's drug-eluting stent, Xience.

From the tlyonthewall.com: Citigroup reiterated its Buy rating on Coca-Cola (NYSE: KO) and raised its target price to $67 from $60. Citigroup expects above consensus earnings results in Q3 and beyond due to the turnaround in KO's Japanese business.