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ETF comparison

IVOO vs VO

Both US Mid Cap.

Vanguard S&P Mid-Cap 400 Index Fund ETF Shares · Vanguard Morningstar Mid-Cap ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.1 %

1 positions appear in both funds. Buying equal dollars of IVOO and VO would leave roughly 0.1% of each dollar exposed to the same underlying securities.

IVOO unmatched 99.7% Shared 0.1% VO unmatched 99.6%

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 IVOO only
399 positions
Shared
1 positions
In VO only
281 positions

Side by side

IVOO

Vanguard S&P Mid-Cap 400 Index Fund ETF Shares

Vanguard · US Mid Cap

92 composite / 100
Expense ratio
0.070%
Net assets
$5.81B
whole fund, 2 share classes
TTM yield
1.19%
Top-10 conc.
7.8%
VO

Vanguard Morningstar Mid-Cap ETF

Vanguard · US Mid Cap

96 composite / 100
Expense ratio
0.030%
Net assets
$222.43B
whole fund, 5 share classes
TTM yield
1.35%
Top-10 conc.
9.5%

Sub-score comparison

93
Cost
97
88
Tax efficiency
88
90
Liquidity
100
100
Concentration
100
—
Tracking quality
—
IVOO sub-score VO

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

Cost difference

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

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 IVOO vs VO.

Top shared holdings

1 shared in total
# Holding In IVOO In VO Overlap
1 Burlington Stores Inc 0.46% 0.10% 0.10%

Only in IVOO

399 total
  • Twilio Inc 1.00%
  • Illumina Inc 0.91%
  • TechnipFMC PLC 0.87%
  • Everpure Inc 0.82%
  • Okta Inc 0.81%
  • ATI Inc 0.78%
  • nVent Electric PLC 0.68%
  • Carpenter Technology Corp 0.66%
  • US Foods Holding Corp 0.65%
  • Tenet Healthcare Corp 0.64%

Only in VO

281 total
  • Vertiv Holdings Co 1.22%
  • Western Digital Corp 1.06%
  • Seagate Technology Holdings PLC 1.05%
  • Quanta Services Inc 1.04%
  • Howmet Aerospace Inc 1.04%
  • Cummins Inc 0.95%
  • Datadog Inc 0.83%
  • Bloom Energy Corp 0.79%
  • Constellation Energy Corp 0.78%
  • Robinhood Markets Inc 0.77%

Related comparisons

More comparisons with IVOO

More comparisons with VO

Percentages are holdings overlap with the named fund.

Open IVOO or VO 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.