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ETF comparison

ITOT vs IVOO

US Total Market vs US Mid Cap.

iShares Core S&P Total U.S. Stock Market ETF · Vanguard S&P Mid-Cap 400 Index Fund ETF Shares

Holdings overlap

Weighted by ISIN/CUSIP
5.0 %

399 positions appear in both funds. Buying equal dollars of ITOT and IVOO would leave roughly 5.0% of each dollar exposed to the same underlying securities.

ITOT unmatched 94.8% Shared 5.0% IVOO unmatched 94.9%

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 ITOT only
2,099 positions
Shared
399 positions
In IVOO only
1 positions

Side by side

ITOT

iShares Core S&P Total U.S. Stock Market ETF

iShares · US Total Market

92 composite / 100
Expense ratio
0.030%
Net assets
$95.86B
TTM yield
1.02%
Top-10 conc.
32.1%
IVOO

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

Vanguard · US Mid Cap

92 composite / 100
Expense ratio
0.070%
Net assets
$5.67B
whole fund, 2 share classes
TTM yield
1.22%
Top-10 conc.
8.3%

Sub-score comparison

97
Cost
93
88
Tax efficiency
88
100
Liquidity
89
68
Concentration
100
—
Tracking quality
—
ITOT sub-score IVOO

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

Cost difference

ITOT 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 ITOT vs IVOO.

Top shared holdings

399 shared in total
# Holding In ITOT In IVOO Overlap
1 Flex Ltd. 0.08% 1.58% 0.08%
2 Twilio, Inc. 0.04% 0.82% 0.04%
3 Carpenter Technology Corp. 0.04% 0.67% 0.04%
4 MKS, Inc. 0.04% 0.62% 0.04%
5 Curtiss-Wright Corp. 0.04% 0.79% 0.04%
6 Entegris, Inc. 0.04% 0.60% 0.04%
7 nVent Electric plc 0.04% 0.77% 0.04%
8 ATI, Inc. 0.04% 0.68% 0.04%
9 Illumina, Inc. 0.04% 0.71% 0.04%
10 TechnipFMC plc 0.04% 0.79% 0.04%
11 MasTec, Inc. 0.04% 0.66% 0.04%
12 Sterling Infrastructure, Inc. 0.04% 0.75% 0.04%

Only in ITOT

2,099 total
  • NVIDIA Corp. 6.63%
  • Apple, Inc. 5.81%
  • Microsoft Corp. 3.79%
  • Amazon.com, Inc. 3.19%
  • Alphabet, Inc. 2.86%
  • Broadcom, Inc. 2.45%
  • Alphabet, Inc. 2.29%
  • Micron Technology, Inc. 1.78%
  • Meta Platforms, Inc. 1.69%
  • Tesla, Inc. 1.62%

Only in IVOO

1 total
  • Masimo Corp 0.23%

Percentages are holdings overlap with the named fund.

Open ITOT or IVOO at a brokerage

Both funds trade commission-free at major US brokerages.

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.