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Basic Question 4 of 8

A fall in interest rates is most likely to decrease the interest rate risk of a ______.

A. support tranche
B. Z-tranche
C. PAC tranche

User Contributed Comments 7

User Comment
americade so will a z tranche (have shorter duration)
danlan2 Support tranche is exposed to such risk.
PhiWong Should the supporting tranche absorb any prepayment and hence it has higher interest rate risk. The value of the supporting tranche will fall faster than the PAC tranche?
PhiWong Excess principal payment received by support tranche faces reinvestment risk since this tranche holder will have to reinvest in lower interest rate.
ehc0791 From short duration perspective, the interest rate risk is lower. However, reinvestment risk is higher.
ramdabom What not z/accrual tranche as well?
rana1970 Guys, Question is specifically asking for interest rate risk, not the reinvestment risk, not even the total risk.
Well actually I think a support trenches holder will be happy to rise in price due to fall in interest rate. Isn't it? Comment please?
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Learning Outcome Statements

describe types and characteristics of residential mortgage-backed securities, including mortgage pass-through securities and collateralized mortgage obligations, and explain the cash flows and risks for each type

CFA® 2024 Level I Curriculum, Volume 4, Module 19.