Secondary markets

The post-issuance trading or buying and selling of instruments, including, but not exclusively, asset-backed securities or ABS; commercial or residential mortgage-backed securities or MBS or CMBS or RMBS; collateralised debt obligations or CDOs; and collateralised loan obligations or CLOs takes place in the secondary market.
Prices established in the secondary market are seen as an efficient means of deriving the value of similar products for valuation purposes.