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SIE practice questionhardCMOs

A support (companion) tranche in a CMO is MOST exposed to:

  1. APrepayment risk✓ Correct answer
  2. BInterest rate risk
  3. CCredit risk
  4. DInflation risk
Explanation

Why A — Prepayment risk

Support tranches absorb excess prepayments, making them most exposed to prepayment risk. All bonds have some interest rate/inflation risk, but structure increases prepayment exposure.

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