Seeing is believing!

Before you order, simply sign up for a free user account and in seconds you'll be experiencing the best in CFA exam preparation.

Basic Question 5 of 7

The main shortcoming of the Vasicek model is that:

A. Interest rates may become negative, although the probability is fairly low.
B. The model is one-factor, meaning that there is only one stochastic driver of the process.
C. Interest rates volatility is assumed to be constant, which is not realistic.

User Contributed Comments 1

User Comment
JNW1980 Why wouldn't this be the other way around? Reality is showing interest rates can indeed be negative. Wouldn't a model that accounts for that be better than one that doesn't all else given equal?
You need to log in first to add your comment.
I just wanted to share the good news that I passed CFA Level I!!! Thank you for your help - I think the online question bank helped cut the clutter and made a positive difference.
Edward Liu

Edward Liu

Learning Outcome Statements

describe term structure models and how they are used.

CFA® 2025 Level II Curriculum, Volume 4, Module 27.