ETF comparison
BBSC vs IWM
Both US Small Cap.
JPMorgan BetaBuilders U.S. Small Cap Equity ETF · iShares Russell 2000 ETF
Holdings overlap
713 positions appear in both funds. Buying equal dollars of BBSC and IWM would leave roughly 64.1% 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
BBSC is 10 bps cheaper than IWM. On a $100,000 position that's about $100/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 BBSC vs IWM.
Top shared holdings
713 shared in total| # | Holding | In BBSC | In IWM | Overlap |
|---|---|---|---|---|
| 1 | Moog, Inc. | 0.43% | 0.38% | 0.38% |
| 2 | BrightSpring Health Services, Inc. | 0.35% | 0.35% | 0.35% |
| 3 | Viasat, Inc. | 0.33% | 0.35% | 0.33% |
| 4 | JFrog Ltd. | 0.32% | 0.31% | 0.31% |
| 5 | Krystal Biotech, Inc. | 0.34% | 0.30% | 0.30% |
| 6 | Argan, Inc. | 0.29% | 0.34% | 0.29% |
| 7 | ESCO Technologies, Inc. | 0.31% | 0.29% | 0.29% |
| 8 | CareTrust REIT, Inc. | 0.35% | 0.28% | 0.28% |
| 9 | Riot Platforms, Inc. | 0.28% | 0.30% | 0.28% |
| 10 | Compass, Inc. | 0.31% | 0.27% | 0.27% |
| 11 | StoneX Group, Inc. | 0.32% | 0.27% | 0.27% |
| 12 | Praxis Precision Medicines, Inc. | 0.26% | 0.26% | 0.26% |
Only in BBSC
139 total- Corcept Therapeutics, Inc. 0.44%
- Semtech Corp. 0.43%
- American Healthcare REIT, Inc. 0.41%
- Arrowhead Pharmaceuticals, Inc. 0.41%
- DigitalOcean Holdings, Inc. 0.34%
- FormFactor, Inc. 0.32%
- Ralliant Corp. 0.29%
- Terawulf, Inc. 0.29%
- UL Solutions, Inc. 0.28%
- Rayonier, Inc. 0.25%
Only in IWM
1,301 total- Hut 8 Corp. 0.37%
- Cytokinetics, Inc. 0.35%
- UMB Financial Corp. 0.33%
- Old National Bancorp 0.28%
- FirstCash Holdings, Inc. 0.28%
- D-Wave Quantum, Inc. 0.27%
- Alkermes plc 0.27%
- EnerSys 0.27%
- Ryman Hospitality Properties, Inc. 0.25%
- Glaukos Corp. 0.25%
Related comparisons
More comparisons with BBSC
- BBSC vs VTWO · Vanguard Russell 2000 Index Fund ETF Shares 55.0%
- BBSC vs SPSM · State Street SPDR Portfolio S&P 600 Small Cap ETF 52.4%
- BBSC vs IJR · iShares Core S&P Small-Cap ETF 51.9%
- BBSC vs VIOO · Vanguard S&P Small-Cap 600 Index Fund ETF Shares 51.0%
- BBSC vs SCHA · Schwab U.S. Small-Cap ETF 50.5%
- BBSC vs DFAS · U.S. Small Cap Portfolio-ETF Class Shares 44.9%
More comparisons with IWM
- IWM vs IWO · iShares Russell 2000 Growth ETF 56.9%
- IWM vs SCHA · Schwab U.S. Small-Cap ETF 56.1%
- IWM vs IWN · iShares Russell 2000 Value ETF 53.6%
- IWM vs DFAS · U.S. Small Cap Portfolio-ETF Class Shares 50.7%
- IWM vs SPSM · State Street SPDR Portfolio S&P 600 Small Cap ETF 47.1%
- IWM vs IJR · iShares Core S&P Small-Cap ETF 46.8%
Percentages are holdings overlap with the named fund.
Open BBSC 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.