IWO vs. SOXX

Last updated Jun 5, 2026

IWO (iShares Russell 2000 Growth ETF) and SOXX (iShares Semiconductor ETF) are both exchange-traded funds - IWO is a Small Cap Growth Equities fund tracking the Russell 2000 Growth Index, while SOXX is a Semiconductors fund tracking the NYSE Semiconductor Index. Both are passively managed. Over the past 10 years, IWO returned 11.28%/yr vs 35.54%/yr for SOXX. A 0.75 correlation means they provide meaningful diversification when combined. IWO charges 0.24%/yr vs 0.34%/yr for SOXX.

Performance

IWO vs. SOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Russell 2000 Growth ETF (IWO) and iShares Semiconductor ETF (SOXX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IWO achieves a 18.58% return, which is significantly lower than SOXX's 100.26% return. Over the past 10 years, IWO has underperformed SOXX with an annualized return of 11.28%, while SOXX has yielded a comparatively higher 35.54% annualized return.

IWO

• 1D: 1.57%
• 1M: 3.99%
• YTD: 18.58%
• 6M: 15.22%
• 1Y: 39.51%
• 3Y*: 19.07%
• 5Y*: 5.89%
• 10Y*: 11.28%

SOXX

• 1D: -2.10%
• 1M: 24.86%
• YTD: 100.26%
• 6M: 97.20%
• 1Y: 179.78%
• 3Y*: 57.09%
• 5Y*: 33.93%
• 10Y*: 35.54%

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

IWO vs. SOXX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IWO iShares Russell 2000 Growth ETF	18.58%	12.90%	15.04%	18.51%	-26.27%	2.54%	34.68%	28.48%	-9.43%	22.25%
SOXX iShares Semiconductor ETF	100.26%	40.74%	12.92%	67.12%	-35.09%	44.09%	52.72%	62.42%	-6.49%	39.79%

Correlation

The correlation between IWO and SOXX is 0.68, 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	0.68
Correlation (3Y) Calculated over the trailing 3-year period	0.67
Correlation (5Y) Calculated over the trailing 5-year period	0.73
Correlation (10Y) Calculated over the trailing 10-year period	0.72
Correlation (All Time) Calculated using the full available price history since Jul 16, 2001	0.75

The correlation between IWO and SOXX has been stable across timeframes, ranging from 0.67 to 0.75 - a consistent structural relationship.

IWO vs. SOXX - Sectors Allocation Comparison

Sectors	IWO	SOXX
Technology	23.6%	100.0%
Industrials	23.1%	-
Healthcare	22.4%	-
Financial Services	8.2%	-
Consumer Cyclical	7.7%	-
Basic Materials	4.2%	-
Energy	3.5%	-
Consumer Defensive	2.6%	-
Communication Services	2.2%	-
Real Estate	2.1%	-
Utilities	0.7%	-

Return for Risk

IWO vs. SOXX — Risk / Return Rank

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

IWO

IWO Risk / Return Rank: 54
IWO Sharpe Ratio Rank: 56
IWO Sortino Ratio Rank: 54
IWO Omega Ratio Rank: 50
IWO Calmar Ratio Rank: 55
IWO Martin Ratio Rank: 56

SOXX

SOXX Risk / Return Rank: 96
SOXX Sharpe Ratio Rank: 98
SOXX Sortino Ratio Rank: 95
SOXX Omega Ratio Rank: 95
SOXX Calmar Ratio Rank: 97
SOXX Martin Ratio Rank: 97

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.

IWO vs. SOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Russell 2000 Growth ETF (IWO) and iShares Semiconductor ETF (SOXX). 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.

	IWO	SOXX	Difference
Sharpe ratio: Return per unit of total volatility	1.86	5.29	-3.43
Sortino ratio: Return per unit of downside risk	2.55	5.16	-2.61
Omega ratio: Gain probability vs. loss probability	1.30	1.71	-0.41
Calmar ratio: Return relative to maximum drawdown	2.67	11.48	-8.81
Martin ratio: Return relative to average drawdown	9.58	43.90	-34.32
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IWO vs. SOXX - Sharpe Ratio Comparison

The current IWO Sharpe Ratio is 1.86, which is lower than the SOXX Sharpe Ratio of 5.29. The chart below compares the historical Sharpe Ratios of IWO and SOXX, 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

	IWO	SOXX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.86	5.29	-3.43
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.24	0.94	-0.70
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.47	1.07	-0.60
Sharpe Ratio (All Time) Calculated using the full available price history	0.29	0.44	-0.16

Drawdowns

IWO vs. SOXX - Drawdown Comparison

The maximum IWO drawdown since its inception was -60.11%, smaller than the maximum SOXX drawdown of -70.21%. Use the drawdown chart below to compare losses from any high point for IWO and SOXX.

Drawdown Indicators

	IWO	SOXX	Difference
Max Drawdown Largest peak-to-trough decline	-60.11%	-70.21%	+10.10%
Max Drawdown (1Y) Largest decline over 1 year	-14.87%	-15.77%	+0.90%
Max Drawdown (3Y) Largest decline over 3 years	-28.57%	-41.36%	+12.79%
Max Drawdown (5Y) Largest decline over 5 years	-40.51%	-45.75%	+5.24%
Max Drawdown (10Y) Largest decline over 10 years	-42.02%	-45.75%	+3.73%
Current Drawdown Current decline from peak	0.00%	-2.10%	+2.10%
Average Drawdown Average peak-to-trough decline	-16.70%	-19.97%	+3.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.14%	4.11%	+0.03%

Volatility

IWO vs. SOXX - Volatility Comparison

The current volatility for iShares Russell 2000 Growth ETF (IWO) is 6.54%, while iShares Semiconductor ETF (SOXX) has a volatility of 14.08%. This indicates that IWO experiences smaller price fluctuations and is considered to be less risky than SOXX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IWO	SOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.54%	14.08%	-7.54%
Volatility (6M) Calculated over the trailing 6-month period	15.72%	27.45%	-11.73%
Volatility (1Y) Calculated over the trailing 1-year period	21.33%	34.20%	-12.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.49%	36.11%	-11.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.13%	33.43%	-9.30%

IWO vs. SOXX - Expense Ratio Comparison

IWO has a 0.24% expense ratio, which is lower than SOXX's 0.34% expense ratio.

Dividends

IWO vs. SOXX - Dividend Comparison

IWO's dividend yield for the trailing twelve months is around 0.39%, more than SOXX's 0.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IWO iShares Russell 2000 Growth ETF	0.39%	0.56%	0.80%	0.73%	0.73%	0.32%	0.44%	0.71%	0.76%	0.73%	0.97%	0.89%
SOXX iShares Semiconductor ETF	0.28%	0.57%	0.67%	0.78%	1.26%	0.64%	0.81%	1.23%	1.37%	0.90%	1.08%	1.29%

Frequently Asked Questions

Can I hold both IWO and SOXX in my portfolio?

IWO and SOXX have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IWO or SOXX?

SOXX has higher volatility (14.08%) compared to IWO (6.54%). In terms of maximum drawdown, IWO dropped -60.11% vs SOXX's -70.21%.

Which ETF is better, IWO or SOXX?

On 10-year performance, SOXX leads with 35.54% vs 11.28% for IWO. On fees, IWO is cheaper at 0.24% per year. On volatility, IWO has been the lower-risk option at 6.54%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IWO or SOXX?

Over the 10-year period, SOXX has performed better with a 35.54% return vs 11.28%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IWO or SOXX?

IWO is cheaper with a 0.24% expense ratio, compared with 0.34% for SOXX.

Which ETF pays a higher dividend yield, IWO or SOXX?

IWO has the higher dividend yield at 0.39%, compared with 0.28% for SOXX.

What is the main difference between IWO and SOXX?

IWO is categorized as Small Cap Growth Equities, while SOXX is Semiconductors. IWO tracks Russell 2000 Growth Index, while SOXX tracks NYSE Semiconductor Index. Their fees differ too: 0.24% for IWO and 0.34% for SOXX.

Which has better risk-adjusted returns?

SOXX currently has the higher Sharpe Ratio (5.29 vs 1.86), 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.