How much of your portfolio should be in stocks? It's one of investing's most important questions — and the standard answer is costing the average investor the equivalent of 2% of their lifetime consumption. Yale economists have finally built something better, and it fits in a spreadsheet.
Investors are turning to AI hoping it will cut through the emotional noise and deliver clearer, more rational financial decisions. But two recent studies suggest these tools don't neutralise investor biases — they absorb them. And the more advanced the model, the worse the problem may get.
Robin Powell
Mar 107 min read
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