In NASDAQ trading today, Apple Inc. (AAPL) shares gained $21.48, or 3.78%, on well above average volume of 50,045,831 to set a new all-time closing high of $589.58.

Apple’s previous all-time closing high was $568.10, set yesterday.

Apple’s all-time intraday high is $594.73, also set today. Apple’s 52-week low stands at $310.50.

Apple’s market value currently stands at $548.95 billion.

The top five U.S. publicly-traded companies, based on market value:
1. Apple (AAPL) – $548.95B
2. Exxon Mobil (XOM) – $405.01B
3. Microsoft (MSFT) – $274.42B
4. IBM (IBM) – $237.40B
5. GE (GE) – $209.56B

Selected companies’ current market values:
• Wal-Mart (WMT) – $209.29B
• Google (GOOG) – $200.01B
• Intel (INTC) – $137.02B
• Cisco (CSCO) – $108.66B
• Amazon (AMZN) – $82.75B
• Disney (DIS) – $79.97B
• Hewlett-Packard (HPQ) – $48.19B
• Dell (DELL) – $30.92B
• Sony (SNE) – $21.66B
• Nokia (NOK) – $18.29B
• Yahoo! (YHOO) – $17.73B
• Adobe (ADBE) – $16.65B
• Motorola Mobility (MMI) – $11.98B
• Research In Motion (RIMM) – $6.77B
• Sirius XM (SIRI) – $8.58B
• Advanced Micro Devices (AMD) – $5.43B
• RealNetworks (RNWK) – $0.35B

AAPL quote via NASDAQ here.

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