easy · Asset-Backed Securities

Which of the following describes the relationship between 'Weighted Average Life' (WAL) and the 'Weighted Average Maturity' (WAM) of the underlying loans?

  1. WAM and WAL are mathematically identical for any pool of level-pay loans.
  2. WAL is only used for the bonds, while WAM is only used for the pool.
  3. WAL is always longer than WAM because it includes interest.
  4. WAL is always shorter than WAM because loans in the pool amortize and prepay before their final due dates.

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