In early morning NASDAQ trading, Apple Inc. (AAPL) shares gained $11.31, or 2.11%, on heavy volume to set a new all-time intraday high of $546.72.

Apple’s 52-week low stands at $310.50.

Apple’s market value currently stands at $509.73 billion, making it the world’s most valuable publicly-traded company.

The top five U.S. publicly-traded companies, based on market value:
1. Apple (AAPL) – $509.73B
2. Exxon Mobil (XOM) – $410.71B
3. Microsoft (MSFT) – $267.41B
4. IBM (IBM) – $229.66B
5. GE (GE) – $202.44B

AAPL quote via NASDAQ here.

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