IDU vs. SOXX

Last updated Jun 5, 2026

IDU (iShares U.S. Utilities ETF) and SOXX (iShares Semiconductor ETF) are both exchange-traded funds - IDU is a Utilities Equities fund tracking the Dow Jones U.S. Utilities Index, while SOXX is a Semiconductors fund tracking the NYSE Semiconductor Index. Both are passively managed. Over the past 10 years, IDU returned 8.80%/yr vs 35.54%/yr for SOXX. At a 0.31 correlation, their price movements are largely independent. IDU charges 0.42%/yr vs 0.34%/yr for SOXX.

Performance

IDU vs. SOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares U.S. Utilities ETF (IDU) 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, IDU achieves a 3.25% return, which is significantly lower than SOXX's 100.26% return. Over the past 10 years, IDU has underperformed SOXX with an annualized return of 8.80%, while SOXX has yielded a comparatively higher 35.54% annualized return.

IDU

• 1D: 0.60%
• 1M: -4.84%
• YTD: 3.25%
• 6M: 1.90%
• 1Y: 9.25%
• 3Y*: 13.84%
• 5Y*: 9.17%
• 10Y*: 8.80%

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)

IDU vs. SOXX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IDU iShares U.S. Utilities ETF	3.25%	15.23%	23.23%	-5.02%	0.17%	16.96%	-1.07%	24.21%	3.93%	11.94%
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 IDU and SOXX is 0.14, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.14
Correlation (3Y) Calculated over the trailing 3-year period	0.10
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (10Y) Calculated over the trailing 10-year period	0.15
Correlation (All Time) Calculated using the full available price history since Jul 16, 2001	0.31

The correlation between IDU and SOXX shifts across timeframes, from 0.10 (3 years) to 0.31 (all time), reflecting how their relationship changes across market environments.

IDU vs. SOXX - Sectors Allocation Comparison

Sectors	IDU	SOXX
Utilities	90.3%	-
Industrials	8.8%	-
Energy	0.5%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Financial Services	-	-
Healthcare	-	-
Real Estate	-	-
Technology	-	100.0%

Return for Risk

IDU vs. SOXX — Risk / Return Rank

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

IDU

IDU Risk / Return Rank: 21
IDU Sharpe Ratio Rank: 21
IDU Sortino Ratio Rank: 20
IDU Omega Ratio Rank: 20
IDU Calmar Ratio Rank: 23
IDU Martin Ratio Rank: 20

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.

IDU vs. SOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Utilities ETF (IDU) 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.

	IDU	SOXX	Difference
Sharpe ratio: Return per unit of total volatility	0.68	5.29	-4.62
Sortino ratio: Return per unit of downside risk	1.00	5.16	-4.16
Omega ratio: Gain probability vs. loss probability	1.12	1.71	-0.59
Calmar ratio: Return relative to maximum drawdown	1.01	11.48	-10.46
Martin ratio: Return relative to average drawdown	2.38	43.90	-41.52
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IDU vs. SOXX - Sharpe Ratio Comparison

The current IDU Sharpe Ratio is 0.68, which is lower than the SOXX Sharpe Ratio of 5.29. The chart below compares the historical Sharpe Ratios of IDU 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

	IDU	SOXX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.68	5.29	-4.62
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.56	0.94	-0.39
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.47	1.07	-0.59
Sharpe Ratio (All Time) Calculated using the full available price history	0.42	0.44	-0.03

Drawdowns

IDU vs. SOXX - Drawdown Comparison

The maximum IDU drawdown since its inception was -53.88%, smaller than the maximum SOXX drawdown of -70.21%. Use the drawdown chart below to compare losses from any high point for IDU and SOXX.

Drawdown Indicators

	IDU	SOXX	Difference
Max Drawdown Largest peak-to-trough decline	-53.88%	-70.21%	+16.33%
Max Drawdown (1Y) Largest decline over 1 year	-9.15%	-15.77%	+6.62%
Max Drawdown (3Y) Largest decline over 3 years	-16.74%	-41.36%	+24.62%
Max Drawdown (5Y) Largest decline over 5 years	-24.11%	-45.75%	+21.64%
Max Drawdown (10Y) Largest decline over 10 years	-36.18%	-45.75%	+9.57%
Current Drawdown Current decline from peak	-7.30%	-2.10%	-5.20%
Average Drawdown Average peak-to-trough decline	-11.38%	-19.97%	+8.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.89%	4.11%	-0.22%

Volatility

IDU vs. SOXX - Volatility Comparison

The current volatility for iShares U.S. Utilities ETF (IDU) is 5.11%, while iShares Semiconductor ETF (SOXX) has a volatility of 14.08%. This indicates that IDU 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

	IDU	SOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.11%	14.08%	-8.97%
Volatility (6M) Calculated over the trailing 6-month period	10.94%	27.45%	-16.51%
Volatility (1Y) Calculated over the trailing 1-year period	13.80%	34.20%	-20.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.49%	36.11%	-19.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.72%	33.43%	-14.71%

IDU vs. SOXX - Expense Ratio Comparison

IDU has a 0.42% expense ratio, which is higher than SOXX's 0.34% expense ratio.

Dividends

IDU vs. SOXX - Dividend Comparison

IDU's dividend yield for the trailing twelve months is around 2.23%, more than SOXX's 0.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IDU iShares U.S. Utilities ETF	2.23%	2.23%	2.29%	2.79%	2.39%	2.39%	2.94%	2.71%	2.80%	2.62%	3.18%	4.22%
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 IDU and SOXX in my portfolio?

IDU and SOXX have a correlation of 0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IDU or SOXX?

SOXX has higher volatility (14.08%) compared to IDU (5.11%). In terms of maximum drawdown, IDU dropped -53.88% vs SOXX's -70.21%.

Which ETF is better, IDU or SOXX?

On 10-year performance, SOXX leads with 35.54% vs 8.80% for IDU. On fees, SOXX is cheaper at 0.34% per year. On volatility, IDU has been the lower-risk option at 5.11%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IDU or SOXX?

Over the 10-year period, SOXX has performed better with a 35.54% return vs 8.80%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IDU or SOXX?

SOXX is cheaper with a 0.34% expense ratio, compared with 0.42% for IDU.

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

IDU has the higher dividend yield at 2.23%, compared with 0.28% for SOXX.

What is the main difference between IDU and SOXX?

IDU is categorized as Utilities Equities, while SOXX is Semiconductors. IDU tracks Dow Jones U.S. Utilities Index, while SOXX tracks NYSE Semiconductor Index. Their fees differ too: 0.42% for IDU and 0.34% for SOXX.

Which has better risk-adjusted returns?

SOXX currently has the higher Sharpe Ratio (5.29 vs 0.68), 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.