NO.PZ2023040701000038
问题如下:
Meredith Alvarez is a junior fixed-income analyst with Canzim Asset Management. Her supervisor, Stephanie Hartson, asks Alvarez to review the asset price and payoff data shown in Exhibit 1 to determine whether an arbitrage opportunity exists.
Exhibit 1. Price and Payoffs for Two Risk-Free Assets
Based on Exhibit 1, Alvarez finds that an arbitrage opportunity is:
选项:
A.
not available.
B.
available based on the dominance principle.
C.
available based on the value additivity principle.
解释:
Correct Answer: B
B is correct. Based on the dominance principle, an arbitrage opportunity exists. The dominance principle asserts that a financial asset with a risk-free payoff in the future must have a positive price today. Because Asset A and Asset B are both risk-free assets, they should have the same discount rate. Relative to its payoff, Asset A is priced at $500/525, or 0.95238, and Asset B is priced at $1,000/1,100, or 0.90909. Given its higher implied discount rate(10%) and lower corresponding price, Asset B is cheap relative to Asset A, which has a lower implied discount rate (5%) and higher corresponding price.
The arbitrage opportunity based on dominance is to sell two units of Asset A for $1,000 and buy one unit of Asset B. There is no cash outlay today, and in one year, the portfolio delivers a net cash inflow of $50 [= $1,100 – (2 ×$525)].
请用中文最简单的话说一下这两个principle的区别,一下就能记住的那种,不要贴英文讲义!