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Robert Arnott
Robert Arnott
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Founder and chairman of Research Affiliates, a developer of investment products

The way to respond to this kind of market is not to ask yourself, "What do I do to make money in the next three months?" but "What would I want my portfolio to look like over the next 30 years?"

Then use the market's volatility to move yourself in that direction. And look for opportunities to buy things that have cratered beyond all rationality.

NEXT: Eric Bjorgen

Last updated April 28 2008: 1:20 PM ET
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