If You Own A Stock Fund In Your Retirement Account, You’re Not As Separate As You Think

If you’ve been investing in an S&P 500 index fund, you’re probably feeling pretty good about yourself. He follows a good investment rule: “Don’t put all your eggs in one basket.” By buying the 500 largest companies in America, you got a piece of everything from oil and banks to breakfast cereal and bandages, right?

Well, I hate to be the one to burst your bubble, but that “diversified” portfolio isn’t nearly as balanced as it used to be. In fact, it’s starting to look less like a broader part of the American economy and more like a big bet for a few guys in Silicon Valley.

That’s why your favorite backpack might be planning a worse trip than you intended.

Big guys eat in the room

The S&P 500 is a “market weight” index. That’s just a way of saying that the bigger the company, the more important it is. In the normal world, that makes sense. You would expect Apple to have a bigger impact on the market than a regional company.

But we are no longer in the ordinary world. According to S&P Global data, concentration in the top 10 stocks has reached levels not seen in half a century. We are talking about a situation where only 10 companies now account for almost 40% of the total value of the index.

Think about that. When you invest in the S&P 500 index fund, you buy 500 companies, but Goldman Sachs research shows that about half of your money is riding on the success of 10 of them. If Nvidia or Microsoft has a bad day, it doesn’t matter if the other 490 companies are doing well—the index goes down and your money goes with it.

It’s the dot-com bubble all over again (sort of)

I have seen this movie before. Back in the late 1990s, everyone thought the Internet would change the world overnight. They were right about the “changing the world” part, but they were wrong about how much they should pay for the shares.

Today, the hype is about Artificial Intelligence. While AI is clearly a big thing, valuations have risen to levels that make some of us older investors a little nervous. Recent market analysis suggests that the S&P 500 is now more concentrated than it was at the height of the dot-com bubble in 2000.

History tells us that when a few stocks get this big, they end up outperforming the rest of the market. When the tech bubble popped in 2000, the S&P 500 went on a “lost decade” where it really declined, while the “boring” stocks — those not in the top 10 — actually did well.

Why this is important for your retirement

The whole point of an index fund is to give you a smooth ride through the ups and downs of the market. But when a few tech stocks drive the bus, you’re exposed to “single-stock risk.”

If a major tech player gets involved in a major antitrust lawsuit or AI chips don’t sell as quickly as expected, your “safe” index fund could be a huge hit. You are not covered by the other 490 companies because they are too small to cover the damage.

How can you really differentiate

So, what is an investor to do? Don’t panic and sell everything—that’s usually the worst move you can make. But you have to check if you are as different as you think you are. Here are a few ways to correct the tilt:

1. Consider a bag of equal weight: There is a version of the S&P 500 where each company receives the same weight (0.2% of the index). Funds like the Invesco S&P 500 Equal Weight ETF (RSP) give you the truest version of diversification. When technology deteriorates, these funds tend to get better.

2. Look for mid-cap and small-cap stocks: The S&P 500 includes only the giants. Adding a fund that tracks small companies can give you exposure to parts of the economy unrelated to the AI ​​race.

3. Don’t forget countries: US stocks have been winners for a while, but that won’t last forever. Investing in companies outside the US is a great way to make sure you’re not just betting on one country’s technology sector.

At the end of the day, index funds are still one of the best ways for the average person to build wealth. But don’t let the “set it and forget it” mantra blind you to the fact that the index itself has changed.

It’s time to take a peek under the hood and make sure you’re not accidentally betting your entire future on a few tech billionaires.