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.
New research suggests that trading in retirement increases after people stop working — and that the extra activity quietly erodes returns. Here's what the evidence shows, and why having more time isn't the advantage most investors assume.
Robin Powell
Mar 117 min read
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