ETF comparison
BBSC vs IWO
Both US Small Cap.
JPMorgan BetaBuilders U.S. Small Cap Equity ETF · iShares Russell 2000 Growth ETF
Holdings overlap
416 positions appear in both funds. Buying equal dollars of BBSC and IWO would leave roughly 46.4% of each dollar exposed to the same underlying securities.
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 15 bps cheaper than IWO. On a $100,000 position that's about $150/yr more in fees for IWO.
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 IWO.
Top shared holdings
416 shared in total| # | Holding | In BBSC | In IWO | Overlap |
|---|---|---|---|---|
| 1 | SiTime Corp. | 0.63% | 0.52% | 0.52% |
| 2 | Viavi Solutions, Inc. | 0.57% | 0.51% | 0.51% |
| 3 | Planet Labs PBC | 0.52% | 0.51% | 0.51% |
| 4 | Primoris Services Corp. | 0.51% | 0.49% | 0.49% |
| 5 | Semtech Corp. | 0.51% | 0.48% | 0.48% |
| 6 | Arrowhead Pharmaceuticals, Inc. | 0.46% | 0.57% | 0.46% |
| 7 | Argan, Inc. | 0.46% | 0.49% | 0.46% |
| 8 | Moog, Inc. | 0.45% | 0.55% | 0.45% |
| 9 | ESCO Technologies, Inc. | 0.41% | 0.49% | 0.41% |
| 10 | StoneX Group, Inc. | 0.38% | 0.40% | 0.38% |
| 11 | FormFactor, Inc. | 0.56% | 0.38% | 0.38% |
| 12 | DigitalOcean Holdings, Inc. | 0.38% | 0.44% | 0.38% |
Only in BBSC
316 total- JPMorgan U.S. Government Money Market Fund 0.83%
- TTM Technologies, Inc. 0.79%
- Everus Construction Group, Inc. 0.40%
- Viasat, Inc. 0.36%
- UL Solutions, Inc. 0.35%
- SM Energy Co. 0.35%
- Noble Corp. plc 0.34%
- Valaris Ltd. 0.33%
- Riot Platforms, Inc. 0.31%
- Transocean Ltd. 0.31%
Only in IWO
688 total- BlackRock Funds III 13.68%
- Bloom Energy Corp. 1.99%
- Fabrinet 1.26%
- Credo Technology Group Holding Ltd. 1.02%
- Nextpower, Inc. 0.94%
- Kratos Defense & Security Solutions, Inc. 0.86%
- Advanced Energy Industries, Inc. 0.82%
- Sterling Infrastructure, Inc. 0.81%
- Bridgebio Pharma, Inc. 0.79%
- Guardant Health, Inc. 0.77%
Open BBSC or IWO 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.