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The week's question
In March 2025, in the thread "Re: OT, out", Umm asked the members: "Do you think it is because America is made up of magical soil that makes businesses based in America magically profitable?" This week it is put to everyone again. The button below opens the small thread re-asking it - read what others have said so far, then give your own answer as an ordinary reply.
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Investment Strategies / Mechanical Investing
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Author: JohnIII ⎊  😊 😞
Number: of 6243 
Subject: Re: SP 600 Deletions Performance
Date: 06/09/24 10:50 AM
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One study looking at S&P 500 deletions/additions showed at the 6 month and 12 month mark the positions changed,
and then deletions outperformed and additions underperformed.


Well, that's interesting. Again, not what I witnessed. I didn't post this because I didn't collect data, but I have "visually" tracked the progress over the last year in a spreadsheet I set up. Out of the gate the deletions outperformed - my recollection is they were up collectively about 20% vs <10% for the index, this after a few months (sorry, going by memory). Then they tanked, and in the last month or so have actually recovered a bit.

John
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This community has written 6,227 posts about Mechanical Investing. The article-length ones it recommended most:
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