A bi-weekly challenge from Andre Mirabelli & Opturo

When using a Dietz calculation for the returns of traded components of a portfolio on a single day, do all components have to use the same timing rule, or can some use all trades at open and others use purchases at open and sales at the close, etc., and still have these component returns roll up to the correct portfolio return?
And how should the “cash” bucket, into which sale proceeds are put or from which purchases are funded, get treated in all these cases?

A bi-weekly challenge from Andre Mirabelli & Opturo

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A bi-weekly challenge from Andre Mirabelli & Opturo

If you use “Purchases in the Basis Dietz”, how do you approach the following scenario?The cash in a portfolio starts the day with a small gain and then the portfolio uses all of the starting cash and half of that small cash gain (“sells cash”) to purchase a non-cash instrument. Thus, nothing ever goes short.…

A bi-weekly challenge from Andre Mirabelli & Opturo

What if I invested by first doing an allocation among countries and then an allocation among sectors within countries, could I evaluate my sector allocation using a single-allocation Brinson model?See the paper and Excel example in Opturo's newsroom.

The Annualization Of Attribution

For Carl Bacon's Advanced Portfolio Attribution Analysis--Andre Mirabelli, Ph.D.--Annualization is necessary whenever one needs a temporally intensive property that can be used to compare the values of a temporally extensive property describing periods of different duration...
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