BBSC vs. IWM

Last updated Jul 15, 2026

BBSC (JPMorgan BetaBuilders U.S. Small Cap Equity ETF) and IWM (iShares Russell 2000 ETF) are both Small Cap Blend Equities funds - BBSC tracks the Morningstar US Small Cap Target Market Exposure Extended Index while IWM tracks the Russell 2000 Index. Both are passively managed. Over the past 5 years, BBSC returned 8.50%/yr vs 7.57%/yr for IWM. With a 0.99 correlation, they move nearly in lockstep. BBSC charges 0.09%/yr vs 0.19%/yr for IWM.

Performance

BBSC vs. IWM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in JPMorgan BetaBuilders U.S. Small Cap Equity ETF (BBSC) and iShares Russell 2000 ETF (IWM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BBSC achieves a 21.48% return, which is significantly higher than IWM's 20.14% return.

BBSC

• 1D: 0.42%
• 1M: 2.06%
• 6M: 15.35%
• YTD: 21.48%
• 1Y: 33.04%
• 3Y*: 17.06%
• 5Y*: 8.50%
• 10Y*: —

IWM

• 1D: 0.35%
• 1M: 0.77%
• 6M: 13.16%
• YTD: 20.14%
• 1Y: 33.33%
• 3Y*: 16.79%
• 5Y*: 7.57%
• 10Y*: 10.80%

*Multi-year figures are annualized to reflect compound growth (CAGR)

BBSC vs. IWM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
BBSC JPMorgan BetaBuilders U.S. Small Cap Equity ETF	21.48%	10.38%	12.31%	20.07%	-19.75%	15.44%	11.94%
IWM iShares Russell 2000 ETF	20.14%	12.66%	11.38%	16.83%	-20.48%	14.54%	10.72%

Correlation

The correlation between BBSC and IWM is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.98
Correlation (3Y) Calculated over the trailing 3-year period	0.99
Correlation (5Y) Calculated over the trailing 5-year period	0.99
Correlation (All Time) Calculated using the full available price history since Nov 17, 2020	0.99

The correlation between BBSC and IWM has been stable across timeframes, ranging from 0.98 to 0.99 - a consistent structural relationship.

BBSC vs. IWM - Sectors Allocation Comparison

Sectors	BBSC	IWM
Technology	20.3%	14.9%
Financial Services	16.7%	18.1%
Healthcare	15.5%	20.1%
Industrials	15.0%	13.8%
Consumer Cyclical	8.7%	8.9%
Real Estate	7.5%	6.3%
Energy	5.8%	5.7%
Basic Materials	4.0%	4.3%
Consumer Defensive	3.0%	2.5%
Communication Services	2.3%	2.0%
Utilities	1.2%	2.9%

Return for Risk

BBSC vs. IWM — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

BBSC

BBSC Risk / Return Rank: 71
BBSC Sharpe Ratio Rank: 67
BBSC Sortino Ratio Rank: 69
BBSC Omega Ratio Rank: 60
BBSC Calmar Ratio Rank: 82
BBSC Martin Ratio Rank: 76

IWM

IWM Risk / Return Rank: 68
IWM Sharpe Ratio Rank: 66
IWM Sortino Ratio Rank: 67
IWM Omega Ratio Rank: 59
IWM Calmar Ratio Rank: 74
IWM Martin Ratio Rank: 74

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

BBSC vs. IWM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for JPMorgan BetaBuilders U.S. Small Cap Equity ETF (BBSC) and iShares Russell 2000 ETF (IWM). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	BBSC	IWM	Difference
Sharpe ratio: Return per unit of total volatility	1.73	1.72	+0.02
Sortino ratio: Return per unit of downside risk	2.50	2.44	+0.06
Omega ratio: Gain probability vs. loss probability	1.29	1.29	+0.01
Calmar ratio: Return relative to maximum drawdown	3.48	3.04	+0.44
Martin ratio: Return relative to average drawdown	11.35	10.73	+0.61

BBSC vs. IWM - Sharpe Ratio Comparison

The current BBSC Sharpe Ratio is 1.73, which is comparable to the IWM Sharpe Ratio of 1.72. The chart below compares the historical Sharpe Ratios of BBSC and IWM, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

BBSC vs. IWM - Drawdown Comparison

The maximum BBSC drawdown since its inception was -30.96%, smaller than the maximum IWM drawdown of -59.05%. Use the drawdown chart below to compare losses from any high point for BBSC and IWM.

Drawdown Indicators

	BBSC	IWM	Difference
Max Drawdown Largest peak-to-trough decline	-30.96%	-59.05%	+28.09%
Max Drawdown (1Y) Largest decline over 1 year	-9.54%	-11.03%	+1.49%
Max Drawdown (3Y) Largest decline over 3 years	-29.32%	-27.50%	-1.82%
Max Drawdown (5Y) Largest decline over 5 years	-30.96%	-31.91%	+0.95%
Max Drawdown (10Y) Largest decline over 10 years	—	-41.13%	—
Current Drawdown Current decline from peak	-2.13%	-1.98%	-0.15%
Average Drawdown Average peak-to-trough decline	-11.28%	-10.73%	-0.55%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.92%	3.12%	-0.20%

Volatility

BBSC vs. IWM - Volatility Comparison

JPMorgan BetaBuilders U.S. Small Cap Equity ETF (BBSC) and iShares Russell 2000 ETF (IWM) have volatilities of 3.80% and 3.88%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBSC	IWM	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.80%	3.88%	-0.08%
Volatility (6M) Calculated over the trailing 6-month period	13.35%	14.18%	-0.83%
Volatility (1Y) Calculated over the trailing 1-year period	19.14%	19.50%	-0.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.94%	22.55%	+0.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.76%	23.00%	-0.24%

BBSC vs. IWM - Expense Ratio Comparison

BBSC has a 0.09% expense ratio, which is lower than IWM's 0.19% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

BBSC vs. IWM - Dividend Comparison

BBSC's dividend yield for the trailing twelve months is around 1.00%, more than IWM's 0.90% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BBSC JPMorgan BetaBuilders U.S. Small Cap Equity ETF	1.00%	1.13%	1.29%	1.58%	1.37%	1.06%	0.18%	0.00%	0.00%	0.00%	0.00%	0.00%
IWM iShares Russell 2000 ETF	0.90%	1.04%	1.15%	1.35%	1.48%	0.94%	1.04%	1.26%	1.40%	1.26%	1.38%	1.54%

Frequently Asked Questions

Can I hold both BBSC and IWM in my portfolio?

With a correlation of 0.98, BBSC and IWM move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, BBSC or IWM?

IWM has higher volatility (3.88%) compared to BBSC (3.80%). In terms of maximum drawdown, BBSC dropped -30.96% vs IWM's -59.05%.

Which ETF is better, BBSC or IWM?

On 5-year performance, BBSC leads with 8.50% vs 7.57% for IWM. On fees, BBSC is cheaper at 0.09% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BBSC or IWM?

Over the 5-year period, BBSC has performed better with a 8.50% return vs 7.57%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BBSC or IWM?

BBSC is cheaper with a 0.09% expense ratio, compared with 0.19% for IWM.

Which ETF pays a higher dividend yield, BBSC or IWM?

BBSC has the higher dividend yield at 1.00%, compared with 0.90% for IWM.

What is the main difference between BBSC and IWM?

BBSC tracks Morningstar US Small Cap Target Market Exposure Extended Index, while IWM tracks Russell 2000 Index. They also come from different issuers: JPMorgan and iShares. Their fees differ too: 0.09% for BBSC and 0.19% for IWM.

Which has better risk-adjusted returns?

BBSC currently has the higher Sharpe Ratio (1.73 vs 1.72), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.