manager fees

Vol 6 page 274 I quote" Performance-based fee structures may also lead to misestimates of portfolio risk. Such fee structures convert symmetrical gross active return distributions into asymmetrical net active return distributions, reducing variability on the upside but not the downside. As a result, a single standard deviation calculated on a return series that incorporates active returns, above and below the base fee, can lead to the underestimation of downside risk"

I do not understand what they are trying to say here. Can anyone explain it better please?.

If the return is negative, the investors feel 100% of the return, and 100% of the standard deviation.

If the return is positive, the investors feel only 80% of the return, and only 80% of the standard deviation.

I do understand the first statement but the 2nd one?

If you calculate a standard deviation for all returns, positive and negative, then it will be larger than the standard deviation of the positive returns, but smaller than the standard deviation of the negative returns. Therefore, it underestimates the downside volatility.


Thanks for the explanation but I am still not clear

Let’s say you have hired a fund manager with an active mandate over 6% abs return. Let’s say your fee structure are 2/20.

So long the returns are 6% or less the entire earnings risk is yours. However, the same is not the case if the manager is consistently earning above 6%. Here the variability is shared in the 20/80 ratio. So if the mean abs return is 8%. Your risk around this 8% is limited to 80% of the variability around 8%. Not so, if it is 6% or below mean return.!There the entire variability is your baby.

Thanks Herbs, clearer now.

Pleasure is all mine

I am also struggling to understand the same concept

someone pls help