Apple closes as most valuable company of all time
8/20/12 4:13 PM ET (MarketWatch)
SAN FRANCISCO (MarketWatch) -- Apple Inc.'s shares on Monday rose 2.6% to close at $665.15, a record, as the technology powerhouse became the most valuable company by market capitalization of all time. Apple 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.