CORO vs. IWM

Last updated Jun 3, 2026

CORO (iShares International Country Rotation Active ETF) and IWM (iShares Russell 2000 ETF) are both exchange-traded funds - CORO is a Tactical Allocation fund actively managed by iShares, while IWM is a Small Cap Blend Equities fund tracking the Russell 2000 Index. CORO is actively managed, while IWM is passively managed. Over the past year, CORO returned 38.35% vs 43.31% for IWM. A 0.73 correlation means they provide meaningful diversification when combined. CORO charges 0.55%/yr vs 0.19%/yr for IWM.

Performance

CORO vs. IWM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares International Country Rotation Active ETF (CORO) and iShares Russell 2000 ETF (IWM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with CORO having a 18.94% return and IWM slightly lower at 18.69%.

CORO

• 1D: 0.68%
• 1M: 6.27%
• YTD: 18.94%
• 6M: 21.98%
• 1Y: 38.35%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IWM

• 1D: 0.93%
• 1M: 4.43%
• YTD: 18.69%
• 6M: 19.57%
• 1Y: 43.31%
• 3Y*: 18.42%
• 5Y*: 6.49%
• 10Y*: 11.08%

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

CORO vs. IWM - Yearly Performance Comparison

	2026 (YTD)	2025	2024
CORO iShares International Country Rotation Active ETF	18.94%	35.09%	-3.56%
IWM iShares Russell 2000 ETF	18.69%	12.66%	-8.00%

Correlation

The correlation between CORO and IWM is 0.72, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.72
Correlation (All Time) Calculated using the full available price history since Dec 5, 2024	0.73

The correlation between CORO and IWM has been stable across timeframes, ranging from 0.72 to 0.73 - a consistent structural relationship.

Return for Risk

CORO vs. IWM — Risk / Return Rank

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

CORO

CORO Risk / Return Rank: 73
CORO Sharpe Ratio Rank: 76
CORO Sortino Ratio Rank: 73
CORO Omega Ratio Rank: 76
CORO Calmar Ratio Rank: 69
CORO Martin Ratio Rank: 73

IWM

IWM Risk / Return Rank: 69
IWM Sharpe Ratio Rank: 68
IWM Sortino Ratio Rank: 67
IWM Omega Ratio Rank: 60
IWM Calmar Ratio Rank: 77
IWM Martin Ratio Rank: 73

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.

CORO vs. IWM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares International Country Rotation Active ETF (CORO) 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.

	CORO	IWM	Difference
Sharpe ratio Return per unit of total volatility	2.50	2.27	+0.23
Sortino ratio Return per unit of downside risk	3.37	3.12	+0.26
Omega ratio Gain probability vs. loss probability	1.46	1.37	+0.09
Calmar ratio Return relative to maximum drawdown	3.53	3.97	-0.44
Martin ratio Return relative to average drawdown	14.13	14.12	+0.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CORO vs. IWM - Sharpe Ratio Comparison

The current CORO Sharpe Ratio is 2.50, which is comparable to the IWM Sharpe Ratio of 2.27. The chart below compares the historical Sharpe Ratios of CORO 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

	CORO	IWM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.50	2.27	+0.23
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.29	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.48	—
Sharpe Ratio (All Time) Calculated using the full available price history	2.08	0.37	+1.71

Drawdowns

CORO vs. IWM - Drawdown Comparison

The maximum CORO drawdown since its inception was -14.13%, smaller than the maximum IWM drawdown of -59.05%. Use the drawdown chart below to compare losses from any high point for CORO and IWM.

Drawdown Indicators

	CORO	IWM	Difference
Max Drawdown Largest peak-to-trough decline	-14.13%	-59.05%	+44.92%
Max Drawdown (1Y) Largest decline over 1 year	-11.25%	-11.03%	-0.22%
Max Drawdown (3Y) Largest decline over 3 years	—	-27.50%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-31.91%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-41.13%	—
Current Drawdown Current decline from peak	0.00%	-0.13%	+0.13%
Average Drawdown Average peak-to-trough decline	-1.74%	-10.77%	+9.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.81%	3.10%	-0.29%

Volatility

CORO vs. IWM - Volatility Comparison

iShares International Country Rotation Active ETF (CORO) and iShares Russell 2000 ETF (IWM) have volatilities of 5.36% and 5.56%, 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

	CORO	IWM	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.36%	5.56%	-0.20%
Volatility (6M) Calculated over the trailing 6-month period	13.18%	13.52%	-0.34%
Volatility (1Y) Calculated over the trailing 1-year period	15.43%	19.14%	-3.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.66%	22.52%	-5.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.66%	23.04%	-6.38%

CORO vs. IWM - Expense Ratio Comparison

CORO has a 0.55% expense ratio, which is higher than IWM's 0.19% expense ratio.

Dividends

CORO vs. IWM - Dividend Comparison

CORO's dividend yield for the trailing twelve months is around 2.69%, more than IWM's 0.87% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CORO iShares International Country Rotation Active ETF	2.69%	3.20%	1.53%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IWM iShares Russell 2000 ETF	0.87%	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 CORO and IWM in my portfolio?

CORO and IWM have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CORO or IWM?

IWM has higher volatility (5.56%) compared to CORO (5.36%). In terms of maximum drawdown, CORO dropped -14.13% vs IWM's -59.05%.

Which ETF is better, CORO or IWM?

On 1-year performance, IWM leads with 43.31% vs 38.35% for CORO. On fees, IWM is cheaper at 0.19% per year. On volatility, CORO has been the lower-risk option at 5.36%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CORO or IWM?

Over the 1-year period, IWM has performed better with a 43.31% return vs 38.35%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CORO or IWM?

IWM is cheaper with a 0.19% expense ratio, compared with 0.55% for CORO.

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

CORO has the higher dividend yield at 2.69%, compared with 0.87% for IWM.

What is the main difference between CORO and IWM?

CORO is categorized as Tactical Allocation, while IWM is Small Cap Blend Equities. Their fees differ too: 0.55% for CORO and 0.19% for IWM.

Which has better risk-adjusted returns?

CORO currently has the higher Sharpe Ratio (2.50 vs 2.27), 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.