Raj Rajaratnam
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Galleon hedge fund trial begins in US

A trial in New York gets underway involving one of the biggest insider trading investigations to hit Wall Street.

Raj Rajaratnam founded the hedge fund Galleon Group, and is accused of making more than $45m by trading on secret information.

As Michelle Fleury reports from New York, witnesses are likely to include some of the biggest names in the US financial world.