The Basel Committee on Banking Supervision said it will require financial institutions to set aside capital for assets including collateralized debt obligations and asset-backed commercial paper.

Such "resecuritizations" were not addressed in the version of Basel II that international regulators finalized in 2006 and helped contribute to losses that have dogged the industry during the financial crisis. To address the gap, the committee amended Pillar 1 of Basel II to require a 20% risk-weight for senior resecuritizations with a triple-A rating.

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