AI stocks can affect your retirement savings, even if you don’t own any of them. Most Americans already have exposure to artificial intelligence through the funds sitting in their 401(k), and many may not realize it.
Five major technology companies with significant AI exposure — Nvidia, Apple, Microsoft, Alphabet, and Amazon — made up about 30% of the S&P 500 as of Sept. 16, according to Forbes.
If your 401(k) holds an S&P 500 index fund, a target-date fund, or any broad-market investment, you are likely holding a piece of all five.
Why your 401(k) probably has AI exposure already
An S&P 500 index fund is still diversified in the sense that it holds hundreds of companies. But when five companies make up nearly a third of the entire index, a sharp move in those five names moves the whole fund. That is concentration risk, even inside a broad-market product.
The AI exposure in your retirement account may go further than Nvidia and Microsoft. “The AI infrastructure build has so many different elements of the supply chain that you can be looking at something as far afield as industrials or within the small-cap space, and have AI exposure,” Marta Norton, chief investment strategist at Empower, told CNBC.
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Target-date funds carry the same risk. These funds gradually shift from stocks toward bonds as your retirement date approaches, but their equity portion often holds the S&P 500 or similar indexes. That means the AI trade is likely inside your target-date fund, too, even if AI is nowhere in the fund’s name.
A slowdown in AI innovation, adaptation, or use could work through your portfolio in ways you might not expect, explained John Sedunov, a Villanova University finance professor, according to CNBC.
A company making industrial equipment for data centers or a utility supplying power to AI facilities could see its stock move on AI news, even though neither looks like a technology investment on the surface.
How to check your 401(k)’s actual holdings
Start with your fund’s top holdings, not just its name. A fund labeled “large-cap growth,” “broad market,” or “S&P 500” can still have a heavy concentration in the same five or 10 technology companies. Log in to your 401(k) account and look at the top 10 or 20 holdings in each fund you own.
Then check for overlap. If you own an S&P 500 fund, a large-cap growth fund, and a technology fund, all three may hold the same mega-cap tech names. What looks like diversification across three funds might actually be three bets on the same group of companies.
Zachary Evens, a manager research analyst at Morningstar, said a pullback in AI or large-cap technology stocks could drag down portfolios precisely because of how heavily those names are weighted in the indexes most 401(k) investors own.
If AI stocks have risen sharply while other parts of your portfolio stayed flat, your allocation may have shifted without you doing anything.shapecharge / Getty Images
What to do if your portfolio has drifted
If AI stocks have risen sharply while other parts of your portfolio stayed flat, your allocation may have shifted without you doing anything. What started as a 70/30 stock-to-bond split could now be running 80/20 without you noticing.
Rebalancing pulls the portfolio back toward its original target. That usually means trimming what has grown the most and adding to what has lagged. You do not need to predict where AI stocks go next to rebalance. You just need to decide the kind of allocation that fits your timeline and risk tolerance, and then bring the portfolio back to it.
Financial planner Nicolas Abrams said investors with a portfolio that no longer matches their plan should consider reducing the overweight position and spreading the proceeds across other areas. The goal is not to get out of technology; it’s to make sure no single theme is carrying more weight than your retirement plan intended.
How to think about volatility without making it worse
A drop in AI stocks would not necessarily put your whole retirement account at risk. “Nine times out of 10, all of your money is not at risk with AI,” Abrams told CNBC. Most 401(k) plans include bonds, international stocks, small-cap companies, and sectors with limited AI exposure.
The question is what proportion of your account is riding on the AI trade, and whether that proportion fits where you are in your career.
If you are within five years of retirement, a sharp drop in a concentrated position can matter more than it would for someone with 20 years to recover. A bucketing approach can help: Keep money you need in the near term in stable assets like short-term bonds or cash, while leaving longer-term money in equities.
What tends to hurt retirement savers more than volatility itself is reacting to it. Selling during a sell-off locks in losses and can mean missing the recovery.
If your original allocation made sense for your goals, a week of AI-driven turbulence is not a reason to tear it apart. It is a reason to make sure you understand what you own and why.
Related: Dave Ramsey warns American workers about 401(k)s, IRAs