Unsecured obligations issued by a corporate or a bank directly or secured obligations (asset-backed CP), often issued through a commercial paper conduit, to fund working capital. Maturities typically range from 2 to 270 days. However, the depth and reliability of some CP markets means that issuers can repeatedly roll over CP issuance and effectively achieve longer term funding. Commercial paper is issued in a wide range of denominations and can be either discounted or interest-bearing.