WASHINGTON - The Securities and Exchange Commission yesterday sought to limit the influence of credit rating agencies and boost the role of analysts at investment firms, in the last of three sets of new rating agency rules the SEC has proposed in response to the subprime mortgage crisis.

The commission voted 3 to 0 in favor of stripping references to "nationally recognized statistical rating organizations" from 38 of its rules, including the portion of Rule 2a-7 on money market funds that requires such funds to hold to hold debt rated double-A or higher. Tax-exempt money market funds held $517.45 billion in the week ending June 16, according to the Money Fund Report, a service of iMoneyNet.com of Westborough, Mass.

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