In NASDAQ trading today, Apple Inc. (AAPL) shares gained $12.46, or 1.88%, on average volume of 15,103,148 shares to set a new all-time closing high of $675.68.

Apple’s previous all-time closing high was $668.87, set on Monday, August 22, 2012.

Apple’s all-time intraday high is $680.87, set during trading today, August 27, 2012. Apple’s 52-week low stands at $354.24.

Apple’s market value currently stands at $633.39 billion.

The top five U.S. publicly-traded companies, based on market value:
1. Apple (AAPL) – $633.39B
2. Exxon Mobil (XOM) – $405.05B
3. Microsoft (MSFT) – $256.62B
4. Wal-Mart (WMT) – $245.34B
5. IBM (IBM) – $223.64B

Selected companies’ current market values:
• Google (GOOG) – $218.26B
• Intel (INTC) – $124.02B
• Amazon (AMZN) – $109.99B
• Cisco (CSCO) – $103.01B
• Disney (DIS) – $89.01B
• Hewlett-Packard (HPQ) – $33.91B
• Dell (DELL) – $19.40B
• Yahoo! (YHOO) – $17.58B
• Adobe (ADBE) – $15.89B
• Nokia (NOK) – $12.08B
• Sony (SNE) – $11.68B
• Sirius XM (SIRI) – $9.72B
• Research In Motion (RIMM) – $3.65B
• Advanced Micro Devices (AMD) – $2.72B
• RealNetworks (RNWK) – $0.28B

AAPL quote via NASDAQ here.

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Apple shares hit new all-time closing high – August 22, 2012
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Apple beats Microsoft, sets all-time record for company value at $621 billion – August 20, 2012
Apple shares hit new all-time intraday, closing highs – August 17, 2012
Apple shares hit new all-time closing high – August 16, 2012