History Says the S&P 500 Is Expensive: Should You Still Buy VOO?

Source The Motley Fool

Key Points

  • The cyclically adjusted price-to-earnings ratio is at a level not seen since the dot-com era.

  • Dollar-cost averaging into stocks is the best long-term approach for investors.

  • 10 stocks we like better than Vanguard S&P 500 ETF ›

The stock market is proving that it's one of the best means of building wealth. The S&P 500 index has generated a total return of 305% in the past 10 years (as of July 28). On a per-year basis, this is a 15% gain.

But history says that the widely followed benchmark is expensive. Should investors still consider buying the Vanguard S&P 500 ETF (NYSEMKT: VOO) right now?

Missed Nvidia in 2009? This Rare Signal Is Flashing Again. In 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia. For the first time in years, that same "Total Conviction" signal is flashing for a company 1/100th the size of Nvidia. Continue »

Wall St sign with stock exchange in background.

Image source: Getty Images.

As of this writing, the cyclically adjusted price-to-earnings (CAPE) ratio, a popular valuation metric that looks at 10-year inflation-adjusted profits, is just shy of 40.5. Outside of the dot-com bubble period at the turn of the century, this figure has never been this high.

According to research from Invesco that looked at data since 1983, a starting CAPE ratio over 40 implies negative annualized returns in the coming decade.

The idea that it's a terrible time to allocate savings to the stock market is understandable. However, the Vanguard S&P 500 ETF has performed exceptionally well in the past 10 years, even though there have always been concerns about the market's valuation. Had you decided to sit out, you'd have missed out on fantastic gains.

Investors should continue to dollar-cost average into this ETF. Ignore the noise and stay focused on the long term.

Should you buy stock in Vanguard S&P 500 ETF right now?

Before you buy stock in Vanguard S&P 500 ETF, consider this:

The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Vanguard S&P 500 ETF wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.

Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $397,081!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,166,221!*

Now, it’s worth noting Stock Advisor’s total average return is 889% — a market-crushing outperformance compared to 203% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.

See the 10 stocks »

*Stock Advisor returns as of July 30, 2026.

Neil Patel has positions in Vanguard S&P 500 ETF. The Motley Fool has positions in and recommends Vanguard S&P 500 ETF. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
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