What stocks do VTI and VOO both hold?

VTI and VOO both hold Apple (AAPL), Microsoft (MSFT), Nvidia (NVDA), Amazon (AMZN), Meta (META), Alphabet Class A (GOOGL), Broadcom (AVGO), Alphabet Class C (GOOG), Tesla (TSLA), and Berkshire Hathaway (BRK.B) in their top 10 positions. These 10 shared names account for the 28.8% weight overlap. Beyond the top 10, both funds also share hundreds of mid- and small-cap names through the S&P 500's complete inclusion in VTI.

What is the difference between VTI and VOO?

VOO tracks the S&P 500 — the 500 largest US companies, market-cap weighted. VTI tracks the CRSP US Total Market Index — roughly 3,500 to 4,000 US stocks across all market caps. The S&P 500 makes up about 82% of VTI's weight, so VTI adds small- and mid-cap exposure (~18% by weight) on top of nearly the same large-cap core that VOO holds. Both have 0.03% expense ratios.

How can I check VTI and VOO overlap in my own portfolio?

You can use the free Guardfolio ETF overlap checker to compare VTI and VOO side by side. To see the overlap across your actual portfolio — including all your ETFs weighted by your real allocation sizes — connect your brokerage accounts to Guardfolio for full look-through analysis.

Guardfolio Research · ETF Overlap

VTI vs VOO Overlap: 28.8% of Weight in Identical Top Holdings

Q: How much do VTI and VOO overlap?

VTI and VOO overlap by 28.8% of weight through shared top-10 holdings. They share all 10 of their top positions: Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet Class A, Broadcom, Alphabet Class C, Tesla, and Berkshire Hathaway all appear in both funds in the same order. The full-fund overlap is even higher because the S&P 500 (which VOO tracks) makes up roughly 82% of VTI's weight.

Q: Is VTI better than VOO?

VTI and VOO are near-twins. Both have a 0.03% expense ratio, identical top-10 holdings, and almost identical sector weights. VTI's only meaningful difference is the inclusion of roughly 3,000 additional small- and mid-cap stocks — but those names collectively represent only about 18% of VTI's weight. For most investors, owning either one is fine; owning both is redundant.

Q: Should I own both VTI and VOO?

Owning both VTI and VOO is rarely useful. They share every top-10 holding in the same order, have identical expense ratios (0.03%), and produce nearly identical sector exposure. The only argument for holding both is access to small- and mid-cap exposure through VTI — but that's better expressed by adding a dedicated small-cap fund (like IWM or AVUV) to VOO rather than duplicating the S&P 500 core.

Q: Does VTI cover small-cap stocks?

Yes. VTI holds roughly 3,000 small- and mid-cap stocks beyond the S&P 500. However, those names are weighted by market cap, so they collectively represent only about 18% of VTI's total weight. The largest 500 stocks (which VOO holds) still drive most of VTI's performance. If you want meaningful small-cap exposure, a dedicated small-cap fund like IWM or AVUV adds more independent diversification than the small-cap tail inside VTI.

VTI and VOO share all 10 of their top holdings, in the same order: Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet Class A, Broadcom, Alphabet Class C, Tesla, and Berkshire Hathaway. The minimum-weight overlap is 28.8%, but the full-fund overlap is closer to 80% because the S&P 500 sits inside VTI by construction. Holding both is duplication, not diversification.

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Overlap Summary

Top-10 Weight Overlap28.8%

Shared Top-1010 of 10

Full-fund Overlap~80%

CorrelationVery High

Bottom line

VTI is VOO plus a thin tail of small- and mid-caps. Owning both is owning the S&P 500 twice.

The Data

Exactly which stocks VTI and VOO share

The table below shows the 10 holdings that appear in both funds' top 10 — every single one — with each fund's weight. The combined effective weight in a 50/50 portfolio is shown in the final column.

Stock	VTI weight	VOO weight	50/50 combined
Apple (AAPL)	6.0%	7.0%	6.5%
Microsoft (MSFT)	5.5%	6.5%	6.0%
Nvidia (NVDA)	5.0%	6.0%	5.5%
Amazon (AMZN)	3.1%	3.7%	3.4%
Meta (META)	2.1%	2.5%	2.3%
Alphabet Class A (GOOGL)	1.7%	2.0%	1.9%
Broadcom (AVGO)	1.5%	1.8%	1.7%
Alphabet Class C (GOOG)	1.4%	1.7%	1.6%
Tesla (TSLA)	1.3%	1.5%	1.4%
Berkshire Hathaway (BRK.B)	1.2%	1.4%	1.3%
Total top-10 weight	28.8%	34.1%	31.5%

Weights are approximate, sourced from public issuer fact sheets and refreshed quarterly. The 28.8% overlap figure is the minimum shared weight (taking the lesser of each fund's weight per holding). Notice that the holdings are not just shared — they appear in identical rank order in both funds.

The Bigger Number

Why full-fund overlap is closer to 80%

The 28.8% figure above only counts top-10 holdings. The real overlap between VTI and VOO is much higher because the S&P 500 is contained inside VTI by construction:

VTI holds ~3,500-4,000 stocks

The CRSP US Total Market Index includes essentially every investable US stock — large, mid, and small-cap. By construction, every S&P 500 name is inside VTI.

The S&P 500 is ~82% of VTI by weight

Because VTI is market-cap weighted and US large-caps dominate the market, the same 500 names VOO holds make up roughly 82% of VTI's weight. Add in mid-caps (~12%) and small-caps (~6%).

Effective overlap: ~80%

A 50/50 VTI + VOO portfolio is effectively ~91% S&P 500 by weight. The "diversification" added by VTI's extra 3,000 small- and mid-cap names contributes about 9% of the combined portfolio.

Sector Comparison

How VTI and VOO compare on sector weight

The sector profiles are nearly identical. The 18% small/mid-cap tail in VTI shifts the weights only marginally compared to VOO:

Sector	VTI	VOO	Difference
Technology	30.0%	31.5%	-1.5pp
Financial Services	13.0%	13.5%	-0.5pp
Healthcare	11.5%	11.0%	+0.5pp
Consumer Discretionary	11.0%	10.5%	+0.5pp
Communication Services	9.0%	9.5%	-0.5pp
Industrials	9.0%	8.0%	+1.0pp
Real Estate	3.0%	2.0%	+1.0pp

No sector differs by more than 1.5 percentage points. The largest VTI tilt is toward Industrials, Real Estate, and Healthcare — sectors where small- and mid-caps are slightly more represented. Tech and Communication Services together: VTI 39%, VOO 41%. A negligible "diversification" effect.

Key Distinction

VTI vs VOO: what's actually different

	VTI	VOO
Index tracked	CRSP US Total Market	S&P 500
Number of holdings	~3,500-4,000	~500
Includes small/mid-cap	Yes (~18% by weight)	No
Top-10 weight	~28.8%	~34.1%
Expense ratio	0.03%	0.03%
Tech + Comms weight	~39%	~41%
Main use case	Total US market core	S&P 500 large-cap core

The honest summary: VTI is "VOO plus 18% of small- and mid-cap stocks." Same fee, same top-10 holdings, same sector profile within a percentage point or two. Either is a fine single-fund US equity core; pick one, not both.

Practical Implications

When does the overlap actually matter?

If you already own VTI

Adding VOO contributes almost no new exposure. You're paying nothing extra in fees (both 0.03%), but you're also gaining nothing meaningful in diversification. The decision is effectively neutral, not additive.

If you already own VOO

Adding VTI adds roughly 18% of small- and mid-cap exposure to that portion of your portfolio. Useful if you want broader market coverage, but a dedicated small-cap ETF gives you that more efficiently.

For tax-loss harvesting

VTI and VOO are similar enough that the IRS wash sale rules may apply when swapping between them. Many investors use them as a tax-loss harvesting pair, but the substantial similarity is a real risk — confirm with your tax advisor.

When rebalancing

Holding both creates extra rebalancing friction with no real benefit. A single fund (either one) plus a separate small-cap allocation is cleaner and gives you explicit control over small-cap weight.

Alternatives

What actually diversifies away from VTI or VOO

If you want to extend your US large-cap core with genuinely independent exposure, these pairings work better than doubling up on VTI + VOO:

VOO + IWM (0% overlap)

IWM tracks the Russell 2000 small-caps. Zero top-10 holdings overlap with VOO. True diversification across market-cap bands — and a cleaner expression of small-cap exposure than VTI's diluted version.

VOO + AVUV or VBR (small-cap value)

Small-cap value funds add a different factor exposure entirely. Historically low correlation with mega-cap growth, near-zero top-10 overlap with VOO.

VTI + VXUS (international)

VXUS is Vanguard's all-cap international ETF — covers developed and emerging markets ex-US. Near-zero overlap with VTI, and the classic "complete the market" pairing.

VOO + SCHD (1.8% overlap)

SCHD's dividend screen filters out most mega-cap growth names. Very low overlap with VOO, different factor exposure (value + quality), different rate sensitivity.

Free Tool

Check VTI vs VOO in the overlap tool

The Guardfolio ETF overlap checker lets you compare VTI and VOO side by side — and see any other pair from the 22-ETF dataset. No signup needed for the two-fund comparison.

Open VTI vs VOO in the tool → Check my full portfolio

The free tool compares two ETFs using top-10 holdings data. Full portfolio analysis (all your ETFs weighted by your actual allocation) requires a free Guardfolio account with brokerage connection.

Frequently Asked Questions

VTI vs VOO overlap — common questions

How much do VTI and VOO overlap? +

VTI and VOO overlap by 28.8% of weight at the top-10 level — they share every one of their top 10 holdings in the same order. At the full-fund level the overlap is closer to 80%, because the S&P 500 makes up roughly 82% of VTI's weight by construction. The "extra" diversification VTI provides over VOO is the small- and mid-cap tail, which together represent only about 18% of VTI's portfolio.

Is VTI better than VOO? +

Neither is "better" in a meaningful sense — they're near-twins. Same expense ratio (0.03%), same top-10 holdings in the same order, sector weights within 1.5 percentage points. VTI's only structural advantage is small- and mid-cap exposure, but that's only 18% of its weight. For most investors, owning either one is fine. If you want explicit control over small-cap allocation, prefer VOO plus a dedicated small-cap fund instead.

Should I own both VTI and VOO? +

Rarely. Owning both means the S&P 500 makes up roughly 91% of your combined weight — you're effectively double-counting the same large-cap core. The only argument is accessing VTI's small- and mid-cap tail, but that's better handled by adding a dedicated small-cap fund (IWM, AVUV, VBR) to VOO. Some investors hold both for tax-loss harvesting purposes; otherwise it's redundancy.

What is the VTI and VOO overlap percentage in 2026? +

As of 2026, VTI and VOO overlap approximately 28.8% by top-10 holding weight, with full-fund overlap closer to 80%. Both funds share all 10 of their top positions in the same rank order. The specific top-10 percentage shifts slightly each quarter, but the structural overlap is permanent — the S&P 500 is inside VTI by index design.

What's the difference between VTI and VOO? +

VOO tracks the S&P 500 — 500 large-cap US companies, market-cap weighted. VTI tracks the CRSP US Total Market Index — roughly 3,500 to 4,000 stocks across all market caps. The S&P 500 accounts for about 82% of VTI's weight, meaning VTI is "VOO plus a small/mid-cap tail." Both have 0.03% expense ratios, identical top-10 holdings, and nearly identical sector exposure.

Does VTI cover small-cap stocks? +

Yes, but lightly. VTI holds roughly 3,000 small- and mid-cap stocks beyond the S&P 500, but they're market-cap weighted, so they collectively represent only about 18% of the fund. The largest 500 stocks (which VOO holds) drive most of VTI's performance. For meaningful small-cap exposure, a dedicated fund like IWM (Russell 2000) or AVUV (small-cap value) adds more independent diversification than VTI's diluted tail.

How can I check this overlap in my own portfolio? +

Use the free ETF overlap checker to compare VTI and VOO directly. For full portfolio analysis — including all your ETFs weighted by your actual allocation sizes across every account — connect your brokerage to Guardfolio free.

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Updated May 17, 2026 · Author: Guardfolio Research · Reviewer: Guardfolio Risk Team · Educational content only, not investment advice.