Regulation Fair Disclosure has stanched the flow of substantive information to portfolio managers and analysts, according to a survey released today by the Association for Investment Management and Research of Charlottesville, Va.

A majority of portfolio managers and analysts (57 percent) responding to the survey believe Regulation FD has cut down on the amount of information available about the companies in which their funds invest, according to the association. Moreover, 56 percent of the respondents indicated that the quality of information provided by companies has decreased since Regulation FD was adopted, according to the survey.

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