Quote from jimbojim:
System A has a return of 50% in year 1 and - 20% in year 2.
System 2 has a return of 35% in year 1 and - 5% in year 2.
Please calculate both Sharpe and Sortino ratios and then after we determine that you well understand these notions we will discuss them.
Quote from mizhael:
Okay, assuming the risk-free rate is 0, the Sharpe Ratio:
A: 0.3030
B: 0.5303
the Sortino Ratio:
A: 15% / 20% = 0.75
B: 15% / 5% = 3
Hopefully my understanding about the denominator is correct.
http://en.wikipedia.org/wiki/Sortino_ratio
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Still what's the range of a typically good Sortino ratio?