The subprime crisis has proved that mutual fund executives should reassess their risk management procedures, according to a Tower Group report called "Multifunctional Integration: The Positive Side of Risk."

"Risk analyses that are siloed' in one area of an institution may exaggerate the danger attached to new products or services, thus leading institutions to stifle innovation and forgo growth opportunities," said Guillermo Kopp, executive director and global research fellow at Tower Group and the author of the report.

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