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ETF comparison

IVV vs VIOO

US Large Cap vs US Small Cap.

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

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

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

IVV unmatched 99.8% Shared 0.0% VIOO unmatched 99.8%

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 IVV only
504 positions
Shared
0 positions
In VIOO only
603 positions

Side by side

IVV

iShares Core S&P 500 ETF

iShares · US Large Cap

91 composite / 100
Expense ratio
0.030%
Net assets
$881.27B
TTM yield
1.10%
Top-10 conc.
36.4%
VIOO

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

Vanguard · US Small Cap

92 composite / 100
Expense ratio
0.070%
Net assets
$6.09B
whole fund, 2 share classes
TTM yield
1.17%
Top-10 conc.
6.3%

Sub-score comparison

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

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

Cost difference

IVV 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 IVV vs VIOO.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in IVV

504 total
  • NVIDIA Corp. 7.51%
  • Apple, Inc. 6.58%
  • Microsoft Corp. 4.29%
  • Amazon.com, Inc. 3.61%
  • Alphabet, Inc. 3.25%
  • Broadcom, Inc. 2.77%
  • Alphabet, Inc. 2.59%
  • Micron Technology, Inc. 2.02%
  • Meta Platforms, Inc. 1.92%
  • Tesla, Inc. 1.83%

Only in VIOO

603 total
  • Sanmina Corp 0.83%
  • Semtech Corp 0.83%
  • Viavi Solutions Inc 0.66%
  • Viasat Inc 0.64%
  • Lumen Technologies Inc 0.61%
  • FormFactor Inc 0.57%
  • Element Solutions Inc 0.57%
  • Argan Inc 0.54%
  • Enphase Energy Inc 0.53%
  • Molina Healthcare Inc 0.53%

Related comparisons

More comparisons with IVV

More comparisons with VIOO

Percentages are holdings overlap with the named fund.

Open IVV or VIOO 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.