Apple Online StoreApple Inc. shares today rose $6.34, or 1.88%, on average volume of 15,684,169 shares to set a new all-time closing high of $342.46.

Apple’s previous all-time closing high was $336.12 set on January 7, 2011. Apple’s all-time intraday high stands at $343.23, set today. Apple’s 52-week low is $190.25.

At market close, Apple’s market value stands at $314.14 billion.

The top five U.S. publicly-traded companies, based on market value, are:
1. Exxon Mobil (XOM) – $378.85B
2. Apple (AAPL) – $314.14B
3. Microsoft (MSFT) – $241.44B
4. Berkshire-Hathaway (BRKA) – $197.39B
5. General Electric (GE) – $197.22B

Selected companies’ current market values:
• Google (GOOG) – $196.41B
• Wal-Mart (WMT) – $191.39B
• IBM (IBM) – $183.42B
• Intel (INTC) – $115.41B
• Cisco (CSCO) – $115.23B
• Hewlett-Packard (HPQ) – $98.26B
• Amazon (AMZN) – $82.89B
• Disney (DIS) – $74.80B
• Nokia (NOK) – $38.46B
• Sony (SNE) – $36.29B
• Research In Motion (RIMM) – $32.24B
• Dell (DELL) – $27.05B
• Yahoo! (YHOO) – $21.64B
• Motorola Mobility (MMI) – N/A
• Adobe (ADBE) – $16.70B
• Advanced Micro Devices (AMD) – $6.27B
• RealNetworks (RNWK) – $558.94M

AAPL quote via NASDAQ here.