VOO vs SPY vs VTI: Which S&P 500 ETF Is Actually Best in 2026?

VOO. SPY. VTI.
Three of the most popular ETFs in the world.
They look almost identical.
They are not.
The fee differences alone cost or save you $20,000+ over 30 years.

The 30-second comparison

SPY costs about 3x more in fees than VOO. Same underlying index. Same companies. Same returns. Just paying triple to own it.

What each ETF actually holds

• VOO — Vanguard S&P 500 ETF. Tracks the 500 largest US companies. 0.03% expense ratio. ~$470/share.
• SPY — SPDR S&P 500 ETF Trust. Same 500 companies. Same returns. 0.0945% expense ratio. ~$510/share.
• VTI — Vanguard Total Stock Market ETF. Includes the S&P 500 PLUS small and mid-cap companies (~3,800 total). 0.03% expense ratio. ~$240/share.

The fee math, in real dollars

You invest $300/month for 30 years. Same underlying market. Different ETFs.

Why does SPY still exist?

Because it is the oldest. SPY launched in 1993. Massive trading volume. Tight bid-ask spreads. Day traders use it for short-term liquidity.

For a long-term investor making automatic monthly purchases, SPY's high volume is not a benefit. The 0.06% extra fee just compounds against you.

VOO vs VTI: the real question

Same expense ratio. Different exposure.

VOO = the 500 biggest US companies (Apple, Microsoft, NVIDIA, Amazon, etc.). About 80% of total US market value.

VTI = those 500 PLUS another 3,300 small and mid-cap companies. ~99% of total US market value.

Historically, VTI has slightly outperformed VOO when small-caps lead the market, and slightly underperformed when large-caps dominate. Over 30+ years, returns are nearly identical.

The honest verdict

For most young investors, the choice is between VOO and VTI. Either is correct.

• Pick VOO if you want pure large-cap US exposure. Cleanest, simplest, most-followed index.
• Pick VTI if you want maximum diversification across all US company sizes. Slightly broader, equally cheap.
• Pick SPY only if you are an active trader. Otherwise, you are paying a fee tax for no reason.

What to actually do

1. Open a brokerage account with any major broker.
2. Buy VOO or VTI. Either is fine. Stop overthinking it.
3. Set automatic monthly buys. Same amount, same date, every month, forever.
4. Enable DRIP for automatic dividend reinvestment.

Calculate exactly what your monthly contribution becomes over your timeline — see how much the difference between 0.03% and 0.0945% actually costs you in real dollars.