CRBN vs. IWM

Last updated Jun 4, 2026

CRBN (iShares MSCI ACWI Low Carbon Target ETF) and IWM (iShares Russell 2000 ETF) are both exchange-traded funds - CRBN is a Large Cap Growth Equities fund tracking the MSCI ACWI Low Carbon Target Index, while IWM is a Small Cap Blend Equities fund tracking the Russell 2000 Index. Both are passively managed. Over the past 10 years, CRBN returned 12.79%/yr vs 10.93%/yr for IWM. A 0.79 correlation means they provide meaningful diversification when combined. CRBN charges 0.20%/yr vs 0.19%/yr for IWM.

Performance

CRBN vs. IWM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares MSCI ACWI Low Carbon Target ETF (CRBN) 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, CRBN achieves a 10.92% return, which is significantly lower than IWM's 17.07% return. Over the past 10 years, CRBN has outperformed IWM with an annualized return of 12.79%, while IWM has yielded a comparatively lower 10.93% annualized return.

CRBN

• 1D: -0.82%
• 1M: 4.91%
• YTD: 10.92%
• 6M: 11.82%
• 1Y: 27.48%
• 3Y*: 21.19%
• 5Y*: 11.10%
• 10Y*: 12.79%

IWM

• 1D: -1.37%
• 1M: 3.52%
• YTD: 17.07%
• 6M: 15.83%
• 1Y: 39.10%
• 3Y*: 17.88%
• 5Y*: 6.11%
• 10Y*: 10.93%

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

CRBN vs. IWM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CRBN iShares MSCI ACWI Low Carbon Target ETF	10.92%	21.85%	19.29%	22.31%	-19.12%	18.82%	16.83%	28.65%	-9.80%	23.49%
IWM iShares Russell 2000 ETF	17.07%	12.66%	11.38%	16.83%	-20.48%	14.54%	20.03%	25.39%	-11.12%	14.58%

Correlation

The correlation between CRBN and IWM is 0.80, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.80
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.81
Correlation (All Time) Calculated using the full available price history since Dec 16, 2014	0.79

The correlation between CRBN and IWM has been stable across timeframes, ranging from 0.79 to 0.84 - a consistent structural relationship.

CRBN vs. IWM - Sectors Allocation Comparison

Sectors	CRBN	IWM
Technology	32.3%	19.5%
Financial Services	18.3%	15.8%
Communication Services	9.6%	2.0%
Industrials	9.4%	17.1%
Healthcare	8.1%	15.8%
Consumer Cyclical	7.7%	7.8%
Consumer Defensive	4.4%	2.1%
Real Estate	2.9%	5.7%
Basic Materials	2.5%	4.5%
Energy	2.2%	6.0%
Utilities	2.2%	3.0%

Return for Risk

CRBN vs. IWM — Risk / Return Rank

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

CRBN

CRBN Risk / Return Rank: 61
CRBN Sharpe Ratio Rank: 62
CRBN Sortino Ratio Rank: 62
CRBN Omega Ratio Rank: 61
CRBN Calmar Ratio Rank: 55
CRBN Martin Ratio Rank: 66

IWM

IWM Risk / Return Rank: 62
IWM Sharpe Ratio Rank: 59
IWM Sortino Ratio Rank: 59
IWM Omega Ratio Rank: 53
IWM Calmar Ratio Rank: 70
IWM Martin Ratio Rank: 67

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.

CRBN vs. IWM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI ACWI Low Carbon Target ETF (CRBN) 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.

	CRBN	IWM	Difference
Sharpe ratio: Return per unit of total volatility	2.12	2.05	+0.06
Sortino ratio: Return per unit of downside risk	2.94	2.85	+0.08
Omega ratio: Gain probability vs. loss probability	1.38	1.34	+0.04
Calmar ratio: Return relative to maximum drawdown	2.74	3.56	-0.82
Martin ratio: Return relative to average drawdown	12.10	12.64	-0.54
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CRBN vs. IWM - Sharpe Ratio Comparison

The current CRBN Sharpe Ratio is 2.12, which is comparable to the IWM Sharpe Ratio of 2.05. The chart below compares the historical Sharpe Ratios of CRBN 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.

Sharpe Ratios by Period

	CRBN	IWM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.12	2.05	+0.06
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.69	0.27	+0.42
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	0.48	+0.28
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	0.37	+0.33

Drawdowns

CRBN vs. IWM - Drawdown Comparison

The maximum CRBN drawdown since its inception was -33.13%, smaller than the maximum IWM drawdown of -59.05%. Use the drawdown chart below to compare losses from any high point for CRBN and IWM.

Drawdown Indicators

	CRBN	IWM	Difference
Max Drawdown Largest peak-to-trough decline	-33.13%	-59.05%	+25.92%
Max Drawdown (1Y) Largest decline over 1 year	-10.08%	-11.03%	+0.95%
Max Drawdown (3Y) Largest decline over 3 years	-16.60%	-27.50%	+10.90%
Max Drawdown (5Y) Largest decline over 5 years	-27.04%	-31.91%	+4.87%
Max Drawdown (10Y) Largest decline over 10 years	-33.13%	-41.13%	+8.00%
Current Drawdown Current decline from peak	-0.82%	-1.49%	+0.67%
Average Drawdown Average peak-to-trough decline	-5.20%	-10.77%	+5.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.28%	3.10%	-0.82%

Volatility

CRBN vs. IWM - Volatility Comparison

The current volatility for iShares MSCI ACWI Low Carbon Target ETF (CRBN) is 3.72%, while iShares Russell 2000 ETF (IWM) has a volatility of 5.75%. This indicates that CRBN experiences smaller price fluctuations and is considered to be less risky than IWM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CRBN	IWM	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.72%	5.75%	-2.03%
Volatility (6M) Calculated over the trailing 6-month period	10.52%	13.53%	-3.01%
Volatility (1Y) Calculated over the trailing 1-year period	13.05%	19.20%	-6.15%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.10%	22.52%	-6.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.90%	23.04%	-6.14%

CRBN vs. IWM - Expense Ratio Comparison

CRBN has a 0.20% expense ratio, which is higher than IWM's 0.19% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

CRBN vs. IWM - Dividend Comparison

CRBN's dividend yield for the trailing twelve months is around 1.99%, more than IWM's 0.88% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CRBN iShares MSCI ACWI Low Carbon Target ETF	1.99%	2.21%	1.94%	2.01%	1.95%	1.57%	1.41%	2.27%	2.51%	2.05%	2.27%	2.01%
IWM iShares Russell 2000 ETF	0.88%	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 CRBN and IWM in my portfolio?

CRBN and IWM have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CRBN or IWM?

IWM has higher volatility (5.75%) compared to CRBN (3.72%). In terms of maximum drawdown, CRBN dropped -33.13% vs IWM's -59.05%.

Which ETF is better, CRBN or IWM?

On 10-year performance, CRBN leads with 12.79% vs 10.93% for IWM. On fees, IWM is cheaper at 0.19% per year. On volatility, CRBN has been the lower-risk option at 3.72%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CRBN or IWM?

Over the 10-year period, CRBN has performed better with a 12.79% return vs 10.93%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CRBN or IWM?

IWM is cheaper with a 0.19% expense ratio, compared with 0.20% for CRBN.

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

CRBN has the higher dividend yield at 1.99%, compared with 0.88% for IWM.

What is the main difference between CRBN and IWM?

CRBN is categorized as Large Cap Growth Equities, while IWM is Small Cap Blend Equities. CRBN tracks MSCI ACWI Low Carbon Target Index, while IWM tracks Russell 2000 Index. Their fees differ too: 0.20% for CRBN and 0.19% for IWM.

Which has better risk-adjusted returns?

CRBN currently has the higher Sharpe Ratio (2.12 vs 2.05), 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.