How long before you report risk measures as part of your performance?Returns can be shown for a day, a few days, a week, a month, a quarter, a year, etc. Risk statistics typically rely upon a series of returns. But how many and which ones?The standard seems to be 36....

It occurred to me that we could spend some focused time on the issue of time (pun intended). Let us begin with rates of return.One of the ironies of performance measurement is that the term "time-weighting" has really nothing to do with the weighting of time; it's a...

I occasionally describe the formulas we use as a series of bifurcations, starting with time- and money-weighting. And, sometimes I begin with a graphical representation. Well, this morning, I decided to take that graphic to its nth degree, and solicited input from my...

I was struck by a front page story in today's Wall Street Journal titled "Buffett's Crisis-Lending Haul Reaches $10 Billion." But it was actually the summary under "What's News" that initially got my attention: "Buffett's investments during the financial crisis have...

I didn't anticipate a third posting on this topic, but I received an interesting note from a reader that I wanted to share and comment on:I disagree with your thoughts on using "arithmetic relative" when considering material differences in portfolio returns. By...

When comparing geometric and arithmetic attribution, the following are often cited as advantages of the former:it's compoundable (meaning, that it links attribution effects over time without creating temporal residuals)it's convertible (that is, when we convert the...

I think my friend Carl Bacon will be proud of me for this post (no, I haven't been completely won over; I just see some merit in this limited case!). Talk is cheap: show me the numbers!The subject of materiality came up during this week's monthly Think Tank...

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A few sessions at last week's GIPS(R) (Global Investment Performance Standards) conference provided some insights into work, under development. I mentioned yesterday the presentation on pooled funds. There were also sessions on (the often talked about here) client...

The opening session at this year's GIPS(R) (Global Investment Performance Standards) came along with some unexpected scary stuff. The topic was pooled funds, and the speakers (Annie Lo and Ann Putallaz) provided us with some insights into a guidance statement (GS)...