Aug. 20, 2012, 4:40 p.m. EDT
Facebook bounces as Apple sets record
Apple becomes most valuable company ever; tech sector slips
http://www.marketwatch.com/story/app..._story_popularApple closed with a market cap of $623.5 billion, up from $607.5 billion on Friday, according to data from FactSet.
The previous record was held by Microsoft Corp., according to Howard Silverblatt of S&P Dow Jones Indices, as cited by The Wall Street Journal. According to FactSet, Microsoft had a market cap of $613.3 billion in late December 1999.