ETF comparison
IWB vs IWM
US Large Cap vs US Small Cap.
Holdings overlap
0 positions appear in both funds. Buying equal dollars of IWB and IWM would leave roughly 0.0% of each dollar exposed to the same underlying securities.
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.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
IWB is 4 bps cheaper than IWM. On a $100,000 position that's about $40/yr more in fees for IWM.
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 IWM.
Top shared holdings
0 shared in totalNo shared holdings between these funds.
Only in IWB
1,024 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 IWM
2,014 total- Moog, Inc. 0.38%
- Hut 8 Corp. 0.37%
- Viasat, Inc. 0.35%
- BrightSpring Health Services, Inc. 0.35%
- Cytokinetics, Inc. 0.35%
- MaxLinear, Inc. 0.34%
- Argan, Inc. 0.34%
- UMB Financial Corp. 0.33%
- JFrog Ltd. 0.31%
- Riot Platforms, Inc. 0.30%
Related comparisons
More comparisons with IWB
- IWB vs ITOT · iShares Core S&P Total U.S. Stock Market ETF 94.8%
- IWB vs VTI · Vanguard Morningstar Total Stock Market ETF 94.8%
- IWB vs VONE · Vanguard Russell 1000 Index Fund ETF Shares 93.9%
- IWB vs SCHX · Schwab U.S. Large-Cap ETF 92.2%
- IWB vs SCHB · Schwab U.S. Broad Market ETF 91.9%
- IWB vs SPYM · State Street SPDR Portfolio S&P 500 ETF 91.7%
More comparisons with IWM
- IWM vs IWD · iShares Russell 1000 Value ETF 0.0%
- IWM vs IWF · iShares Russell 1000 Growth ETF 0.0%
- IWM vs IWP · iShares Russell Mid-Cap Growth ETF 0.0%
- IWM vs IWR · iShares Russell Mid-Cap ETF 0.0%
- IWM vs IWS · iShares Russell Mid-Cap Value ETF 0.0%
- IWM vs IWX · iShares Russell Top 200 Value ETF 0.0%
Percentages are holdings overlap with the named fund.
Open IWB or IWM 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.