The wrap spread looks like 3 points until both notes are actually amortized
Take a wrap where the headline spread is misleading. Underlying: 218k remaining at 3.9, roughly 22 years left, payment 1,430 plus escrow. Proposed wrap: 265k at 7.25 over 30 years, payment about 1,808. The wrap seller collects 1,808, pays out 1,430, keeps 378 a month. Fine. But the underlying amortizes on a 22 year schedule and the wrap runs 30, so the senior balance falls faster than the wrap balance. Around year eight or nine the seller's equity position in the paper is materially different from day one and the spread stops being the whole story. The open question is whether the faster senior payoff is a feature or a trap. It builds real value for the wrap seller, but it also means the monthly outflow is fixed and heavy relative to the inflow while the buyer's balance barely moves. If the buyer defaults in year four, the seller is foreclosing on a note where they have paid down someone else's lien with the buyer's money. How do people actually think about the term mismatch here, and does anyone match the wrap term to the remaining underlying term instead?