4. Then, take the square root of the average
determined in Step 3. This is the Target
Downside Deviation used in denominator of
the Sortino Ratio. Again, percentages need
to be expressed as decimal values before
performing the square root function.
Target Downside Deviation:
Square root of √0.0513% = 2.264%
Finally, we calculate the Sortino ratio:
Winton
1.82
Red
Rock
1.45
Blue
Trend
1.41
Newedge
CTA
0.76
S&P
500
0.81
Man
AHL
0.53
Dunn
0.41
Graham
0.42
10%
2.264%
= 4.417 Sortino Ratio