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Most people invested in the stock market, whether through retirement accounts or other types of brokerage accounts, probably hold stocks in the Magnificent 7. These seven megacap tech companies have driven a large share of the gains in the US market over the past few years, especially through 2023.
They are Apple (AAPL), Microsoft (MSFT), Nvidia (NVDA), Google parent Alphabet (GOOGL), Amazon (AMZN), Meta Platform (META) and Tesla (TSLA).
Because the S&P 500 and most index funds are weighted by company size, these stocks now make up an unusually large share of the overall market. I asked ChatGPT to help me explain what it would look like if these seven stocks didn’t dominate the market, especially the average American’s portfolio.
Also see what investors should expect from The Magnificent 7 in 2026.
S&P 500 will look more attractive
If you’ve been enjoying your portfolio gains, according to ChatGPT, you may have the Magnificent 7 to thank, as they account for about 25% to 35% of the S&P 500’s total value, depending on recent price fluctuations. In recent years, they have contributed most of the index’s gains.
If they disappeared from the market, the recent returns of the S&P 500 would be significantly lower, and that would hurt your portfolio. Additionally, some years that looked like strong bull markets will look modest or even flat.
In other words, ChatGPT said that what feels like “the market is doing well” is actually “seven stocks are doing well.” The performance of your portfolio has been significantly influenced by a handful of companies.
Your 401(k) will be less tech-heavy
Right now, many workers don’t realize how tech-centric their “diversified” retirement accounts actually are. Most Americans indirectly own the Magnificent 7 through one of the following types of funds:
- S&P 500 Index Fund
- total market index fund
- Target-Date Retirement Fund.
Without those seven companies, the tech percentage of your portfolio would drop dramatically. On the other hand, other areas may be more impacted. It could also potentially reduce volatility.
The removal of the Magnificent 7 will make the portfolio look more balanced across sectors, but will also see slower growth.
Market risk will look different
When it comes to risk, ChatGPT said there are two aspects to it.
On the one hand, with the Magnificent 7, you have high concentration risk, strong growth during the tech and artificial intelligence (AI) boom, and big upside if the tech sells off.
Without Magnificent 7, you have broader participation from smaller companies, less reliance on the AI boom and potentially steady but slower growth.
International markets will look relatively strong
ChatGPT said Magnificent 7 stocks have played a big role in the US market’s dominance. If you removed them, US stock returns would be more likely to resemble international markets, and global diversification might look more attractive to investors.
Retirement portfolios will likely be smaller
The reality is that if you remove the Magnificent 7’s big gains over the last few years, many retirement balances would be significantly smaller, Chatgpt said. Target-date funds will also underperform. However, wealth inequality among investors may be slightly reduced.
These companies have created huge wealth for retirement savers – especially those who consistently invest through index funds.
What does this mean for the average investor
What does it mean if you’ve invested heavily in Magnificent 7? Here’s what ChatGPT said:
- You are more concentrated than you think.
- Your retirement growth has been technology-driven.
- Diversification still matters.
- Long-term discipline still wins.
In short, you don’t have “seven stocks.” You own a piece of the American economy. Those seven companies currently hold the largest stakes. However, market leaders eventually change over time.
Editor’s Note: This article is for informational purposes only and does not constitute financial advice. Investing involves risk, including possible loss of principal. Always consider your individual circumstances and consult a qualified financial advisor before making investment decisions.