Business and Personal Finance Dictionary

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• INVESTMENT SECURITY
  
  As defined by the Office of the Comptroller of the Currency (OCC) (12 CFR 1), a marketable debt obligation that is not predominantly speculative in nature. A security is not predominantly speculative in nature if it is rated investment grade. When a security is not rated, the security must be the credit equivalent of a security rated investment grade. See marketable and investment grade.
  
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