If you're looking for a promising investment, give some consideration to the Vanguard 500 Index (VFIAX) fund. It's an index fund that tracks the S&P 500 index of 500 of America's biggest companies, and that index has averaged annual gains of close to 10% over many decades.
A key reason to invest in it is for its diversification, which can reduce your portfolio's risk. Those 500 holdings together represent around 80% of the entire U.S. stock market's value. And they include all of the "Magnificent Seven" stocks, which are Apple, Amazon.com, (Google parent) Alphabet, (Facebook parent) Meta Platforms, Microsoft, Nvidia, and Tesla.

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Investing in this fund is like betting on the future of the American economy. As superinvestor Warren Buffett noted back in his 2015 letter to shareholders, " For 240 years it's been a terrible mistake to bet against America, and now is no time to start. America's golden goose of commerce and innovation will continue to lay more and larger eggs."
Here are the fund's recent top holdings:
Stock |
Percent of Fund |
---|---|
Nvidia |
7.33% |
Microsoft |
7.04% |
Apple |
5.83% |
Amazon.com |
3.94% |
Meta Platforms |
3.05% |
Broadcom (NASDAQ: AVGO) |
2.47% |
Alphabet Class A |
1.95% |
Berkshire Hathaway Class B (NYSE: BRK.B) |
1.70% |
Tesla |
1.69% |
Alphabet Class C |
1.58% |
Source: Morningstar.com, as of June 30, 2025.
The top 10 holdings together made up about 37% of the whole fund -- because the S&P 500 index is market-cap weighted. That means larger companies will move the needle more than smaller companies.
You can buy into the S&P 500 in another way through Vanguard, too -- via its Vanguard S&P 500 ETF (VOO 0.37%). It's an exchange-traded fund (ETF) -- a fund that trades like a stock, which can make it easier for many people to invest in it. If you invest in the mutual fund through Vanguard, you may be facing a $3,000 minimum investment requirement, but you can buy into the ETF with just a few dollars -- or hundreds of thousands.