@OO0000OO The IR numerator is alpha (residual return). Here as the ratios are CAPM-based, I am using Jensen's alpha = Portfolio return - riskfree - beta*MRP; i.e., a generalization where alpha is the regression intercept.
@marcosjaime72495 жыл бұрын
Dear Sir: VVery grateful through his channel.
@WalterZelhofer12 жыл бұрын
If you assume no risk-free asset, the m^2 measure simplifies to: rp*(sigma_market/sigma_portf)-rm
@albertbeccu12 жыл бұрын
Usually for modelling purposes, the expected return in these examples are probably the average return of a time period.
@janeyap89776 жыл бұрын
Thanks u so much for showing how to solve the information ratio.. U are a life saver.
@axe86311 жыл бұрын
In order for one to be robust to the non-ergodicity and functionally varying regularity==> use a multifractional nonergodicity robust sharpe ratio. MFNER-Sharpe= {[E(Rp)- sigma^2*abs(t)^(2*H(t)-1)*{H(t)+H'(t)*ln(t)*t}] -riskfree rate}/ sqrt(2*sigma^2*abs(t)^(2*H(t)-1)*{H(t)+H'(t)*ln(t)*t})
@stankmaw13 жыл бұрын
This is a great video, really helped me a lot.
@dewsification10 жыл бұрын
I have a question. is treynor index, sharpe, and alpha-jensen applied in Fama and French model? if yes, whether the formula remain the same? thanks
@voodooman0813 жыл бұрын
@bionicturtledotcom i'm not criticizing, i really want to know, can't find any other way than assuming subjective probabilities of future possible outcomes and finding mathematical expectation.
@OO0000OO14 жыл бұрын
The numerator of IR seems not equal to the Jensen alpha. There is no Beta involved in IR.
@WalterZelhofer12 жыл бұрын
What I meant to say was, the risk free rate is 0. I usually make this assumption since it rarely makes a difference and I'm too lazy to download t-bill data :)
@bionicturtle13 жыл бұрын
@voodooman08 in a video, you can't cover too many topics at once
@gimoroemma12 жыл бұрын
This is gonna make me pass in 5 days :p
@voodooman0813 жыл бұрын
Watching all these videos about portfolio optimization no one is telling how to count expected return of an asset. You all are making too much assumptions, which contradict with real life experience.