10/15/2026
Your index fund may be a lot less diversified than you think. π
The top 10 stocks in the S&P 500 now represent roughly 40% of the entire index β and most of them are AI-linked mega-caps. If you own a standard index fund, you already have significant AI exposure, whether that was your intention or not.
So the real question isn't whether there's a bubble. It's whether your portfolio reflects a deliberate choice β or one that quietly happened to you.
This isn't a straight replay of the dot-com era. Tech earnings are real, and AI investment is largely funded by profits, not borrowed money. But concentration risk is still concentration risk. When a small cluster of companies drives most of an index, one bad earnings cycle, one export restriction, or one shift in spending can ripple across your whole portfolio.
The move isn't to panic-sell. It's to look clearly at what you own and decide how much of your financial future you're comfortable tying to a single theme.
How much AI exposure do you think you actually have? Drop your guess in the comments.
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