Shares of Apple Inc. today rose US$3.99, or 2.14%, to close at $190.01 on volume of 21,556,721 shares to set a new 52-week closing high.

Apple’s previous 52-week closing high was $186.15, set on Friday, September 28th. Apple’s 52-week low stands at $78.20 set during trading on January 20, 2009.

At market close, Apple’s market value stands at $170.21 billion.

For reference, some selected current market values:
• Microsoft (MSFT) – $223.75 billion
• Apple (AAPL) – $170.21 billion
• IBM (IBM) – $159.08 billion
• Google (GOOG) – $157.89 billion
• Hewlett-Packard (HPQ) – $111.46 billion
• Intel (INTC) – $109.89 billion
• Amazon (AMZN) – $39.26 billion
• Dell (DELL) – $30.33 billion
• Sony (SNE) – $27.73 billion
• Yahoo! (YHOO) – $24.28 billion
• Adobe (ADBE) – $17.55 billion
• RealNetworks (RNWK) – $514.87 million

AAPL quote via NASDAQ here.