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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: lizgdal ✶☼  😊 😞
Number: of 6243 
Subject: Re: Machine Learning and Mechanical Investing
Date: 08/14/23 3:24 PM
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The Medallion fund had spectacular success, and yet is less than 1% of the total market. That makes it difficult to see the effect of Medallion on the general market. An AI that could reproduce WEB's stock picking might be possible in 20 years.

May 2023:
Berkshire Hathaway market cap $700 billion
Renaissance Technologies AUM $106 billion
total US stock market cap $44,000 billion

April 2021:
Berkshire Hathaway market cap $580 billion
Renaissance Technologies AUM $131 billion
total US stock market cap $44,000 billion

Berkshire Hathaway started earlier. WEB bought Berkshire in 1965. Medallion started in 1988.

==== links ====
"Renaissance Technologies is a hedge fund with 14 clients and discretionary assets under management (AUM) of $106,026,795,439 (Form ADV from 2023-05-01)."
whalewisdom.com - Renaissance technologies llc

The Medallion Fund Is Still Outperforming. Other Renaissance Funds Still Aren't, April 19, 2021
"At the end of the year the regulatory assets under management of Medallion, which includes leverage, amounted to $34.8 billion, according to its annual filing with the Securities and Exchange Commission. Regulatory assets for the entire firm were $130.86 billion."
institutionalinvestor.com - The medallion fund is still outperforming other renaissance funds still arent

Top 10 largest hedge fund managers 2022
Renaissance Technologies $57 billion as of June 30, 2022
pionline.com - Largest hedge funds

"Bad ideas is good, good ideas is terrific, no ideas is terrible."
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This community has written 6,227 posts about Mechanical Investing. The article-length ones it recommended most:
Dividend investing · 52 recs · 2025
Non-Mag7 screen · 34 recs · 2025
OT - Div yields and returns · 32 recs · 2024
Using AI to generate backtesting programs · 30 recs · 2025
Rankings for 19Dec2022 · 29 recs · 2022
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