BBSCvsIWMETF Comparison
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JPMorgan BetaBuilders U.S. Small Cap Equity ETF (BBSC) and iShares Russell 2000 ETF (IWM) belong to the same industry segment: US Small Cap. Both ETFs have the same top 3 sector exposures: Finance, Healthcare and Technology. BBSC is less expensive with a Total Expense Ratio (TER) of 0.09%, versus 0.19% for IWM. BBSC is up 19.51% year-to-date (YTD) with -$19M in YTD flows. IWM performs worse with 17.74% YTD performance, and -$5.68B in YTD flows. Run a side-by-side ETF comparison of BBSC and IWM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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BBSC vs IWM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 07/29/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BBSC IWM | -2.95%-3.40% | +8.48%+6.35% | +19.51%+17.74% | +31.05%+31.03% | +51.30%+50.60% | +44.65%+38.11% |
| Flows | BBSC IWM | -$25M-$329M | -$82M+$649M | -$19M-$5.68B | -$41M-$3.30B | -$396M-$1.86B | +$34M-$2.33B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BBSC IWM | +16.72%+18.60% | +18.83%+19.47% | +21.77%+21.24% | +22.95%+22.54% |
| Max drawdown | BBSC IWM | -4.15%-4.78% | -9.66%-11.03% | -29.10%-27.52% | -30.97%-31.96% |
| Max drawdown duration | BBSC IWM | 16d16d | 81d82d | 296d289d | 1072d1093d |
Trading data
BBSC | IWM | |
Last sale 7/30/2026 at 1:30 PM | $292.59 | |
| Previous close 07/29/2026 | $288.57 | |
| Consolidated volume 07/29/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 30, 2026
1-year trailing difference
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BBSC | IWM | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 7/30/2026 at 1:30 PM
Live
Closed
BBSC | IWM | |
|---|---|---|
| Last price | – | $292.59 |
| 1D performance | – | +1.39% |
| AuM | $693.15 M | $80.02 B |
| E/R | 0.09% | 0.19% |
Characteristics
BBSC | IWM | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | J.P. Morgan Asset Management | iShares |
| Benchmark | Morningstar US Small Cap Target Market Exposure Extended Index | Russell 2000 Index |
| N° of holdings | 852 | 1961 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 16, 2020 | May 22, 2000 |
| ESG | No | No |
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Exposure
Countries
BBSC
USA
96.88%
Other
3.12%
IWM
USA
95.01%
Other
4.99%
Sectors
BBSC
Finance
25.36%
Healthcare
16.79%
Technology
14.61%
Industrials
11.73%
Consumer Cyclical.
7.17%
Other
24.35%
IWM
Finance
25.48%
Healthcare
20.01%
Technology
12.88%
Industrials
11.47%
Other
30.16%
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Diversification
BBSC
Total weight of top 15 holdings out of 15
6.05%
IWM
Total weight of top 15 holdings out of 15
4.84%
Top 15 holdings
Data as of June 30, 2026
BBSC
Semtech Corp.
0.58%
Moog, Inc.
0.46%
FormFactor, Inc.
0.45%
DigitalOcean Holdings, Inc.
0.42%
TeraWulf, Inc.
0.42%
BrightSpring Health Services, Inc.
0.41%
StoneX Group, Inc.
0.38%
Argan, Inc.
0.38%
Riot Platforms, Inc.
0.38%
Arrowhead Pharmaceuticals, Inc.
0.38%
American Healthcare REIT, Inc.
0.38%
Krystal Biotech, Inc.
0.36%
Powell Industries, Inc.
0.36%
ESCO Technologies, Inc.
0.35%
CareTrust REIT, Inc.
0.33%
IWM
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%
Krystal Biotech, Inc.
0.30%
ESCO Technologies, Inc.
0.29%
CareTrust REIT, Inc.
0.28%
Old National Bancorp
0.28%
FirstCash Holdings, Inc.
0.28%
Frequently asked questions about BBSC and IWM
How have the BBSC and IWM ETFs performed in 2026?
As of July 29, 2026, BBSC is up 19.51% year-to-date (YTD), while IWM has returned 17.74%. That puts BBSC better performer ahead so far this year.
Which ETF is attracting more investor money: BBSC or IWM?
Year-to-date, the BBSC ETF saw -$19M in flows, compared to -$5.68B for IWM.
Which ETF is more volatile: BBSC or IWM?
Over the past year, BBSC had a volatility of 18.83%, while IWM experienced 19.47%.
Which ETF is bigger: BBSC or IWM?
As of July 29, 2026, BBSC holds $693.15 M in assets under management (AUM), while IWM manages $80.02 B.
What sectors do the BBSC and IWM ETFs invest in?
BBSC leans toward sectors like Finance, Healthcare and Technology. Meanwhile, IWM focuses on Finance, Healthcare and Technology.
What are the top holdings of the BBSC ETF and IWM ETF?
BBSC top holdings include Semtech Corp., Moog, Inc. and FormFactor, Inc.. IWM holds in its top three: Moog, Inc., Hut 8 Corp. and ViaSat, Inc..
Which ETF is more diversified: BBSC or IWM?
BBSC holds 857 securities with 6.05% of its assets in the top 15. IWM has 1992 securities and a top 15 weight of 4.84%.
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Latest news about BBSC & IWM
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