The two most common types of dollar rolls are:
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A. B. C. D.A
A dollar roll is a type of repurchase agreement (repo) in which an investor sells a security to a counterparty and simultaneously agrees to repurchase a similar security at a future date for a slightly higher price. Dollar rolls are commonly used in the mortgage-backed securities market to help investors manage their cash flows and mitigate risks.
The two most common types of dollar rolls are:
A. Fixed-coupon and yield-maintenance agreements: In a fixed-coupon dollar roll, the security that is sold and repurchased has a fixed interest rate. In a yield-maintenance dollar roll, the counterparty agrees to maintain the yield on the security being sold by reinvesting the proceeds in another security with a similar yield.
B. Variable-coupon and yield-maintenance agreements: In a variable-coupon dollar roll, the security that is sold and repurchased has a floating interest rate that is tied to a benchmark, such as LIBOR. In a yield-maintenance dollar roll, the counterparty agrees to maintain the yield on the security being sold by reinvesting the proceeds in another security with a similar yield.
C. Fixed-coupon and accounting agreements is not a common type of dollar roll.
D. Variable-coupon and principal agreements is also not a common type of dollar roll.
Therefore, the correct answer is B. Variable-coupon and yield-maintenance agreements.