Apple Online StoreApple Inc. shares today rose $1.26, or 0.37%, on below-average volume of 10,520,204 shares to set a new all-time closing high of $345.68.

Apple’s previous all-time closing high was $344.42 set yesterday, January 12, 2011. Apple’s all-time intraday high stands at $346.64, set today. Apple’s 52-week low is $190.25.

At market close, Apple’s market value stands at $317.09 billion.

The top five U.S. publicly-traded companies, based on market value, are:
1. Exxon Mobil (XOM) – $386.81B
2. Apple (AAPL) – $317.09B
3. Microsoft (MSFT) – $241.18B
4. Berkshire-Hathaway (BRKA) – $200.10B
5. General Electric (GE) – $198.18B

Selected companies’ current market values:
• Google (GOOG) – $197.20B
• Wal-Mart (WMT) – $195.16B
• IBM (IBM) – $184.89B
• Intel (INTC) – $118.76B
• Cisco (CSCO) – $116.84B
• Hewlett-Packard (HPQ) – $99.99B
• Amazon (AMZN) – $83.27B
• Disney (DIS) – $74.34B
• Nokia (NOK) – $40.35B
• Sony (SNE) – $35.75B
• Research In Motion (RIMM) – $33.24B
• Dell (DELL) – $27.35B
• Yahoo! (YHOO) – $21.83B
• Motorola Mobility (MMI) – N/A
• Adobe (ADBE) – $16.92B
• Advanced Micro Devices (AMD) – $5.63B
• RealNetworks (RNWK) – $548.09M

AAPL quote via NASDAQ here.