The Municipal Securities Rulemaking Board published a notice yesterday reminding dealers of their disclosure and suitability requirements in connection with auction-rate securities and reiterated plans to issue draft changes to its rules to boost the transparency of that market.

The board's notice came as the turmoil in the auction-rate market continued for the fourth straight week, in which the maximum rates reset during auctions have ranged wildly from as low as 3% to as high as 20%, the MSRB said.

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