invisibleSHIELD case for iPadShares of Apple Inc. today rose $1.06, or 0.44%, on average volume of 22,405,733 shares to set a new all-time closing high of $240.60.

Apple’s previous closing high was $239.54 set yesterday. Apple’s all-time high (intraday) stands at $241.92, set during trading today. Apple’s 52-week low is $114.19.

At market close, Apple’s market value stands at $218.17 billion since financial sites all use the latest published share count for Apple: 906.8 million shares outstanding as of January 15. However, Apple’s actual diluted share count, as per its latest 10-Q, was 919.783 million shares, which means that the company actually has a market cap of $221.30 billion. For the lists below, we’ll use what the financial sites use.

Apple went public on December 12, 1980 and closed with a market cap of $1.431 billion. Apple’s all-time low market value was $630.9 million on July 8, 1982.

The top five U.S. publicly-traded companies:
1. Exxon Mobil (XOM) – $317.93B
2. Microsoft (MSFT) – $257.41B
3. Apple (AAPL) – $218.17B
4. Wal-Mart (WMT) – $207.80B
5. Berkshire Hathaway (BRKA) – $197.60B

Selected companies’ current market values:
• Google (GOOG) – $179.19B
• IBM (IBM) – $166.90B
• Cisco (CSCO) – $150.81B
• Hewlett-Packard (HPQ) – $124.97B
• Intel (INTC) – $124.01B
• Disney (DIS) – $68.50B
• Amazon (AMZN) – $59.96B
• Nokia (NOK) – $57.44B
• Research In Motion (RIMM) – $38.92B
• Sony (SNE) – $37.00B
• Dell (DELL) – $30.72B
• Yahoo! (YHOO) – $23.62B
• Adobe (ADBE) – $18.38B
• Motorola (MOT) – $16.72B
• Beleaguered Palm (PALM) – $779.40M
• RealNetworks (RNWK) – $625.69M

AAPL quote via NASDAQ here.