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ETF comparison

IWB vs VB

US Large Cap vs US Small Cap.

iShares Russell 1000 ETF · Vanguard Morningstar Small-Cap ETF

Holdings overlap

Weighted by ISIN/CUSIP
9.2 %

593 positions appear in both funds. Buying equal dollars of IWB and VB would leave roughly 9.2% of each dollar exposed to the same underlying securities.

IWB unmatched 90.7% Shared 9.2% VB unmatched 90.6%

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 IWB only
431 positions
Shared
593 positions
In VB only
716 positions

Side by side

IWB

iShares Russell 1000 ETF

iShares · US Large Cap

87 composite / 100
Expense ratio
0.15%
Net assets
$48.56B
TTM yield
0.92%
Top-10 conc.
33.4%
VB

Vanguard Morningstar Small-Cap ETF

Vanguard · US Small Cap

96 composite / 100
Expense ratio
0.030%
Net assets
$175.77B
whole fund, 5 share classes
TTM yield
1.27%
Top-10 conc.
4.3%

Sub-score comparison

85
Cost
97
89
Tax efficiency
88
100
Liquidity
100
67
Concentration
100
—
Tracking quality
—
IWB sub-score VB

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

Cost difference

VB is 12 bps cheaper than IWB. On a $100,000 position that's about $120/yr more in fees for IWB.

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 IWB vs VB.

Top shared holdings

593 shared in total
# Holding In IWB In VB Overlap
1 Astera Labs, Inc 0.11% 0.45% 0.11%
2 FLEX LTD. 0.09% 0.36% 0.09%
3 Credo Technology Group Holding Ltd 0.06% 0.55% 0.06%
4 JABIL INC. 0.06% 0.49% 0.06%
5 NATERA, INC. 0.05% 0.45% 0.05%
6 EMCOR GROUP, INC. 0.05% 0.45% 0.05%
7 REVOLUTION MEDICINES, INC. 0.05% 0.46% 0.05%
8 QNITY ELECTRONICS, INC. 0.05% 0.21% 0.05%
9 EQT CORPORATION 0.05% 0.20% 0.05%
10 CENTENE CORPORATION 0.05% 0.19% 0.05%
11 STEEL DYNAMICS, INC. 0.04% 0.19% 0.04%
12 TWILIO INC. 0.04% 0.38% 0.04%

Only in IWB

431 total
  • NVIDIA CORPORATION 6.72%
  • APPLE INC. 6.03%
  • MICROSOFT CORPORATION 3.99%
  • AMAZON.COM, INC. 3.33%
  • ALPHABET INC. 3.00%
  • BROADCOM INC. 2.53%
  • ALPHABET INC. 2.42%
  • MICRON TECHNOLOGY, INC. 1.87%
  • META PLATFORMS, INC. 1.78%
  • TESLA, INC. 1.77%

Only in VB

716 total
  • Moog Inc 0.15%
  • Hut 8 Corp 0.14%
  • Viasat Inc 0.14%
  • Cytokinetics Inc 0.14%
  • BrightSpring Health Services Inc 0.14%
  • MaxLinear Inc 0.13%
  • Argan Inc 0.13%
  • Krystal Biotech Inc 0.13%
  • UMB Financial Corp 0.12%
  • CareTrust REIT Inc 0.12%

Percentages are holdings overlap with the named fund.

Open IWB or VB 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.