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ETF comparison

VIOO vs VOO

US Small Cap vs US Large Cap.

Vanguard S&P Small-Cap 600 Index Fund ETF Shares · Vanguard S&P 500 ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

1 positions appear in both funds. Buying equal dollars of VIOO and VOO would leave roughly 0.0% of each dollar exposed to the same underlying securities.

VIOO unmatched 99.8% Shared 0.0% VOO unmatched 99.7%

Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.

In VIOO only
604 positions
Shared
1 positions
In VOO only
503 positions

Side by side

VIOO

Vanguard S&P Small-Cap 600 Index Fund ETF Shares

Vanguard · US Small Cap

93 composite / 100
Expense ratio
0.070%
Net assets
$6.26B
whole fund, 2 share classes
TTM yield
1.15%
Top-10 conc.
5.3%
VOO

Vanguard S&P 500 ETF

Vanguard · US Large Cap

91 composite / 100
Expense ratio
0.030%
Net assets
$1.74T
whole fund, 4 share classes
TTM yield
1.08%
Top-10 conc.
36.4%

Sub-score comparison

93
Cost
97
88
Tax efficiency
88
91
Liquidity
100
100
Concentration
62
—
Tracking quality
—
VIOO sub-score VOO

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

VOO is 4 bps cheaper than VIOO. On a $100,000 position that's about $40/yr more in fees for VIOO.

Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with VIOO vs VOO.

Top shared holdings

1 shared in total
# Holding In VIOO In VOO Overlap
1 Conagra Brands Inc 0.43% 0.01% 0.01%

Only in VIOO

604 total
  • Corcept Therapeutics Inc 0.60%
  • Glaukos Corp 0.59%
  • Paycom Software Inc 0.55%
  • Brinker International Inc 0.55%
  • Match Group Inc 0.53%
  • Jackson Financial Inc 0.52%
  • Viasat Inc 0.51%
  • Protagonist Therapeutics Inc 0.50%
  • CarMax Inc 0.49%
  • Ryman Hospitality Properties Inc 0.48%

Only in VOO

503 total
  • NVIDIA Corp 7.51%
  • Apple Inc 6.59%
  • Microsoft Corp 4.30%
  • Amazon.com Inc 3.62%
  • Alphabet Inc 3.25%
  • Broadcom Inc 2.77%
  • Alphabet Inc 2.59%
  • Micron Technology Inc 2.02%
  • Meta Platforms Inc 1.92%
  • Tesla Inc 1.84%

Related comparisons

More comparisons with VIOO

More comparisons with VOO

Percentages are holdings overlap with the named fund.

Open VIOO or VOO at a brokerage

Both funds trade commission-free at major US brokerages.

Open at Fidelity

Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.

Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see /methodology/.

Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.