VTI vs VOO: Total Market or S&P 500? (The Final Verdict)

It is the “Coke vs Pepsi” of the investing world. Reddit fights over them daily. But the truth is, their performance is 99% identical. Here is the only real difference you need to know.

BMT Investment Research Team BMT Investment Research Team · 📅 Jan 2026 · ⏱️ 5 min read · INVESTING › ETFS
VOO
500
Large CompaniesBig
VTI
3,700+
Entire US MarketAll
Overlap
86%
They Are TwinsFact

Identical Fees, Different Ingredients

Both are Vanguard ETFs. Both cost almost nothing to hold. The difference is in the “tail.”

Feature VOO (S&P 500) VTI (Total Market)
Expense Ratio 0.03% 0.03%
Number of Stocks ~500 ~3,700
Small Cap? No (0%) Yes (~14%)
Dividend Yield ~1.5% ~1.5%
What is the “Small Cap” Factor?
Small companies are riskier but have room to grow 100x. Big companies (VOO) are stable but won’t grow 100x easily. VTI gives you a tiny sprinkle of that “Small Cap” explosive potential.
10-Year Return (Est)
VOO Return 230%
Driven by Tech Giants.
VTI Return 228%
Almost identical.
Difference Noise
Don’t overthink it.
PreferenceWinner
SimplicityVOO
Max DiversityVTI

Don’t Be a “Collector”

We see portfolios like this all the time: “I own 50% VOO and 50% VTI to be safe.”

This is pointless.
VTI is basically 85% VOO. If you buy both, you are just buying the same Apple and Microsoft shares twice. You are complicating your portfolio for zero benefit.
Rule: Pick one and marry it.

Pro Tip: The Perfect Tax Partners

Remember Tax Loss Harvesting? (See Article 010). This is where VTI and VOO shine.

The Switch Strategy

If VOO crashes and you have a $5,000 loss:
1. Sell VOO to lock in the tax loss.
2. Immediately buy VTI.
They are “different enough” to avoid the Wash Sale Rule, but “similar enough” that your portfolio performance won’t change. They are the perfect dance partners.

Frequently Asked Questions

Is VTI safer?
Technically, yes. Because it holds 3,700 companies, if the top 500 fail, you still have 3,200 others. But realistically, if the top 500 fail, the US economy is destroyed anyway, so VTI will crash too.
What about dividends?
They are virtually the same. Currently, both yield around 1.3% – 1.5%. Do not choose based on dividends.