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Great content as always, can't catch every twist and turn. I'm studying some of these factor portfolios and wondering -- how quickly do these systems catch the turns?

Eg long beta began peaking in October - December 2021 (made new highs), but we would only see the negative monthly signal after January 2022... and how could you have known that 1 bad month signaled the end of the run? Isn't that arguably too late?

It seems especially difficult to identify those regime shifts that drive all of this, or is there a straightforward way?

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Yes, combination of things. My take: Its easier to avoid mistakes (beeing long high beta in a inflationary regime). It was a combination of things that got me out of high beta.... Inflation regime, ARKK behaving weak since the beginning of 2021 etc....

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