The Hidden Cost of Owning the Vanguard S&P 500 ETF

June 7, 2026 - 22:13

Many investors assume that buying the Vanguard S&P 500 ETF (VOO) is a simple, low-cost way to track the market. And in many ways, it is. But there is one costly mistake that keeps cropping up: ignoring the difference between total return and price return.

VOO pays dividends, usually every quarter. When those dividends are distributed, the ETF's share price drops by roughly the same amount. An investor who only looks at the price chart might think their investment is flat or even losing ground, when in fact the total return -- including reinvested dividends -- is positive. This gap can be significant over time. For example, over the last decade, the S&P 500's price return has been around 180%, but the total return has been closer to 230%. That is a difference of 50 percentage points.

The mistake is not just about ignoring dividends. It is about failing to reinvest them. Many brokerage accounts offer automatic dividend reinvestment, but not everyone turns it on. If you let dividends sit in cash, you miss out on compounding. Over 20 or 30 years, that can cost tens of thousands of dollars.

Another error is chasing yield. Some investors see VOO's dividend yield of about 1.3% and think they can do better with a high-dividend fund. But total return is what matters. The S&P 500's growth has historically outpaced most dividend-focused strategies, especially after taxes.

Finally, do not forget about fees. VOO's expense ratio is 0.03%, which is extremely low. But if you are paying a trading commission or a platform fee that eats into your returns, that advantage shrinks. Stick with a broker that offers commission-free ETF trades.

The bottom line: VOO is a fine investment, but only if you understand how it works. Track total return, reinvest dividends, and keep costs low. That is how you avoid the mistake.