Apple shares close above $400

Apple investors rejoice: The company's stock closed at an all-time high Tuesday. Shares of the iPhone and iPad maker hit $400 a few times Monday but closed at $398.50. Tuesday shares opened at the $400 mark and actually peaked in the morning at $404.48.…

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How Wall Street Can Hurt Silicon Valley

After Monday, the belief that Silicon Valley is going to remain immune from the Wall Street fallout is gone. While some tech companies had been saying they weren’t worried that the credit crunch would hurt them, I don't believe them.…

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