IWCvsBBSCETF Comparison
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iShares Micro-Cap ETF (IWC) and JPMorgan BetaBuilders U.S. Small Cap Equity ETF (BBSC) belong to the same industry segment: US Small Cap. IWC's top 3 sector exposures are Health Care, Information Technology and Financials. In contrast, BBSC's top sector exposures are Information Technology, Financials and Industrials. IWC is more expensive with a Total Expense Ratio (TER) of 0.6%, versus 0.09% for BBSC. IWC is up 20.22% year-to-date (YTD) with +$121M in YTD flows. BBSC performs worse with 18.85% YTD performance, and +$8M in YTD flows. Run a side-by-side ETF comparison of IWC and BBSC 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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IWC vs BBSC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 06/12/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWC BBSC | +2.15%+4.53% | +17.19%+19.01% | +20.22%+18.85% | +52.44%+37.69% | +76.53%+61.74% | +29.66%+39.09% |
| Flows | IWC BBSC | +$290K-$26M | -$6M-$63M | +$121M+$8M | +$191M-$22M | -$22M-$324M | -$92M+$61M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWC BBSC | +27.92%+19.86% | +24.61%+19.29% | +24.45%+21.90% | +24.62%+23.07% |
| Max drawdown | IWC BBSC | -6.12%-4.53% | -12.28%-9.66% | -29.17%-29.10% | -40.55%-30.97% |
| Max drawdown duration | IWC BBSC | 13d8d | 82d81d | 233d296d | 1409d1072d |
Trading data
IWC | BBSC | |
Last sale 6/12/2026 at 1:30 PM | $189.28 | |
| Previous close 06/11/2026 | $187.64 | |
| Consolidated volume 06/11/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of May 29, 2026
1-year trailing difference
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IWC | BBSC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 6/12/2026 at 1:30 PM
Live
Closed
IWC | BBSC | |
|---|---|---|
| Last price | $189.28 | – |
| 1D performance | +0.87% | – |
| AuM | $1.44 B | $715.08 M |
| E/R | 0.6% | 0.09% |
Characteristics
IWC | BBSC | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | J.P. Morgan Asset Management |
| Benchmark | Russell Microcap Index | Morningstar US Small Cap Target Market Exposure Extended Index |
| N° of holdings | 953 | 632 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | August 12, 2005 | November 16, 2020 |
| ESG | No | No |
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Exposure
Countries
IWC
USA
93.79%
Other
6.21%
BBSC
USA
95.55%
Other
4.45%
Sectors
IWC
Health Care
19.1%
Information Techn.
18.5%
Financials
15.89%
Industrials
10.16%
Other
36.35%
BBSC
Information Techn.
17.64%
Financials
14.47%
Industrials
14.15%
Health Care
13.2%
Consumer Discreti.
9.09%
Other
31.45%
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Diversification
IWC
Total weight of top 15 holdings out of 15
15.36%
BBSC
Total weight of top 15 holdings out of 15
7.75%
Top 15 holdings
Data as of April 30, 2026
IWC
APPLIED OPTOEL/D
2.03%
US74006W2070
1.54%
APPLIED BLOCKCHAIN
1.52%
TERAWULF INC
1.40%
CIPHER MINING INC
1.07%
COGENT BIOSCIENCES
0.96%
ENERGY FUELS
0.95%
TERNS PHARMACEUTICALS
0.95%
AXT
0.89%
CELCUITY INC
0.79%
TUTOR PERINI
0.77%
CENTRUS ENERGY CORP
0.66%
NAVITAS SEMICONDUCTOR CORP
0.63%
NLIGHT INC
0.62%
US2528281080
0.59%
BBSC
TTM TECHNOLOGIES
0.75%
SITIME CORP
0.65%
FORMFACTOR
0.65%
APPLIED OPTOEL/D
0.54%
SEMTECH
0.54%
VIAVI SOLUTIONS INC
0.53%
PLANET LABS PBC
0.51%
PRIMORIS SERVICES
0.49%
ARROWHEAD PHARMACEUTICALS INC
0.47%
MOOG
0.47%
ARGAN
0.45%
US3981823038
0.44%
CARETRUST REIT
0.43%
US74006W2070
0.41%
ESCO TECHNOLOGIES
0.41%
Frequently asked questions about IWC and BBSC
How have the IWC and BBSC ETFs performed in 2026?
As of June 12, 2026, IWC is up 20.22% year-to-date (YTD), while BBSC has returned 18.85%. That puts IWC better performer ahead so far this year.
Which ETF is attracting more investor money: IWC or BBSC?
Year-to-date, the IWC ETF saw +$121M in flows, compared to +$8M for BBSC.
Which ETF is more volatile: IWC or BBSC?
Over the past year, IWC had a volatility of 24.61%, while BBSC experienced 19.29%.
Which ETF is bigger: IWC or BBSC?
As of June 12, 2026, IWC holds $1.44 B in assets under management (AUM), while BBSC manages $715.08 M.
What sectors do the IWC and BBSC ETFs invest in?
IWC leans toward sectors like Health Care, Information Technology and Financials. Meanwhile, BBSC focuses on Information Technology, Financials and Industrials.
What are the top holdings of the IWC ETF and BBSC ETF?
IWC top holdings include APPLIED OPTOEL/D, US74006W2070 and APPLIED BLOCKCHAIN. BBSC holds in its top three: TTM TECHNOLOGIES, SITIME CORP and FORMFACTOR.
Which ETF is more diversified: IWC or BBSC?
IWC holds 1287 securities with 15.36% of its assets in the top 15. BBSC has 731 securities and a top 15 weight of 7.75%.
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