In NASDAQ trading today, Apple Inc. (AAPL) shares gained $17.03, or 2.63%, on well above average volume of 21,527,760 shares to set a new all-time closing high of $665.14.

Apple’s previous all-time closing high was $648.11, set on the last trading day, Friday, August 17, 2012.

Apple’s all-time intraday high is $665.15, also set today. Apple’s 52-week low stands at $354.24.

Apple’s market value currently stands at $622.44 billion. Also of note today, Apple became the most valuable public company ever.

The top five U.S. publicly-traded companies, based on market value:
1. Apple (AAPL) – $622.44B
2. Exxon Mobil (XOM) – $405.79B
3. Microsoft (MSFT) – $257.45B
4. Wal-Mart (WMT) – $244.56B
5. IBM (IBM) – $229.23B

Selected companies’ current market values:
• Google (GOOG) – $220.83B
• Intel (INTC) – $131.18B
• Amazon (AMZN) – $108.55B
• Cisco (CSCO) – $100.77B
• Disney (DIS) – $90.43B
• Hewlett-Packard (HPQ) – $39.57B
• Dell (DELL) – $21.99B
• Yahoo! (YHOO) – $17.71B
• Adobe (ADBE) – $16.69B
• Sony (SNE) – $12.05B
• Nokia (NOK) – $10.19B
• Sirius XM (SIRI) – $9.87B
• Research In Motion (RIMM) – $3.78B
• Advanced Micro Devices (AMD) – $2.89B
• RealNetworks (RNWK) – $0.28B

AAPL quote via NASDAQ here.

Related articles:
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