POWR vs. SPYM

Last updated Jun 17, 2026

POWR (iShares U.S. Power Infrastructure ETF) and SPYM (State Street SPDR Portfolio S&P 500 ETF) are both exchange-traded funds - POWR is a Utilities Equities fund actively managed by iShares, while SPYM is a S&P 500 fund tracking the S&P 500 Index. POWR is actively managed, while SPYM is passively managed. Over the past 10 years, POWR returned 8.71%/yr vs 15.66%/yr for SPYM. At a 0.49 correlation, their price movements are largely independent. POWR charges 0.40%/yr vs 0.02%/yr for SPYM.

Performance

POWR vs. SPYM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares U.S. Power Infrastructure ETF (POWR) and State Street SPDR Portfolio S&P 500 ETF (SPYM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, POWR achieves a 17.16% return, which is significantly higher than SPYM's 10.39% return. Over the past 10 years, POWR has underperformed SPYM with an annualized return of 8.71%, while SPYM has yielded a comparatively higher 15.66% annualized return.

POWR

• 1D: 0.22%
• 1M: -0.00%
• YTD: 17.16%
• 6M: 16.40%
• 1Y: 19.76%
• 3Y*: 10.88%
• 5Y*: 15.19%
• 10Y*: 8.71%

SPYM

• 1D: -0.56%
• 1M: 1.54%
• YTD: 10.39%
• 6M: 11.20%
• 1Y: 26.02%
• 3Y*: 21.01%
• 5Y*: 13.82%
• 10Y*: 15.66%

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

POWR vs. SPYM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
POWR iShares U.S. Power Infrastructure ETF	17.16%	10.81%	-1.30%	3.66%	42.54%	42.03%	-28.30%	8.44%	-11.74%	9.69%
SPYM State Street SPDR Portfolio S&P 500 ETF	10.39%	17.79%	25.00%	26.24%	-18.09%	28.78%	18.49%	31.99%	-4.78%	21.30%

Correlation

The correlation between POWR and SPYM is 0.42, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.42
Correlation (3Y) Calculated over the trailing 3-year period	0.35
Correlation (5Y) Calculated over the trailing 5-year period	0.40
Correlation (10Y) Calculated over the trailing 10-year period	0.48
Correlation (All Time) Calculated using the full available price history since Feb 2, 2012	0.49

The correlation between POWR and SPYM shifts across timeframes, from 0.35 (3 years) to 0.49 (all time), reflecting how their relationship changes across market environments.

POWR vs. SPYM - Sectors Allocation Comparison

Sectors	POWR	SPYM
Utilities	45.6%	2.1%
Industrials	33.0%	7.8%
Energy	11.0%	3.1%
Technology	9.5%	39.0%
Basic Materials	1.0%	1.7%
Communication Services	-	10.6%
Consumer Cyclical	-	9.9%
Consumer Defensive	-	4.5%
Financial Services	-	11.1%
Healthcare	-	8.3%
Real Estate	-	1.8%

Return for Risk

POWR vs. SPYM — Risk / Return Rank

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

POWR

POWR Risk / Return Rank: 40
POWR Sharpe Ratio Rank: 33
POWR Sortino Ratio Rank: 32
POWR Omega Ratio Rank: 31
POWR Calmar Ratio Rank: 58
POWR Martin Ratio Rank: 49

SPYM

SPYM Risk / Return Rank: 67
SPYM Sharpe Ratio Rank: 68
SPYM Sortino Ratio Rank: 65
SPYM Omega Ratio Rank: 68
SPYM Calmar Ratio Rank: 60
SPYM 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.

POWR vs. SPYM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Power Infrastructure ETF (POWR) and State Street SPDR Portfolio S&P 500 ETF (SPYM). 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.

	POWR	SPYM	Difference
Sharpe ratio: Return per unit of total volatility	1.18	2.13	-0.95
Sortino ratio: Return per unit of downside risk	1.69	2.88	-1.19
Omega ratio: Gain probability vs. loss probability	1.21	1.39	-0.18
Calmar ratio: Return relative to maximum drawdown	2.80	2.94	-0.14
Martin ratio: Return relative to average drawdown	7.89	13.28	-5.39

POWR vs. SPYM - Sharpe Ratio Comparison

The current POWR Sharpe Ratio is 1.18, which is lower than the SPYM Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of POWR and SPYM, 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

POWR vs. SPYM - Drawdown Comparison

The maximum POWR drawdown since its inception was -65.98%, which is greater than SPYM's maximum drawdown of -54.46%. Use the drawdown chart below to compare losses from any high point for POWR and SPYM.

Drawdown Indicators

	POWR	SPYM	Difference
Max Drawdown Largest peak-to-trough decline	-65.98%	-54.46%	-11.52%
Max Drawdown (1Y) Largest decline over 1 year	-7.09%	-8.90%	+1.81%
Max Drawdown (3Y) Largest decline over 3 years	-23.14%	-18.72%	-4.42%
Max Drawdown (5Y) Largest decline over 5 years	-25.09%	-24.48%	-0.61%
Max Drawdown (10Y) Largest decline over 10 years	-63.42%	-33.87%	-29.55%
Current Drawdown Current decline from peak	-2.59%	-1.19%	-1.40%
Average Drawdown Average peak-to-trough decline	-18.11%	-7.14%	-10.97%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.51%	1.97%	+0.54%

Volatility

POWR vs. SPYM - Volatility Comparison

iShares U.S. Power Infrastructure ETF (POWR) has a higher volatility of 6.05% compared to State Street SPDR Portfolio S&P 500 ETF (SPYM) at 4.47%. This indicates that POWR's price experiences larger fluctuations and is considered to be riskier than SPYM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	POWR	SPYM	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.05%	4.47%	+1.58%
Volatility (6M) Calculated over the trailing 6-month period	12.71%	9.68%	+3.03%
Volatility (1Y) Calculated over the trailing 1-year period	16.83%	12.33%	+4.50%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.15%	16.89%	+6.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.60%	18.04%	+7.56%

POWR vs. SPYM - Expense Ratio Comparison

POWR has a 0.40% expense ratio, which is higher than SPYM's 0.02% expense ratio.

Dividends

POWR vs. SPYM - Dividend Comparison

POWR's dividend yield for the trailing twelve months is around 5.50%, more than SPYM's 1.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
POWR iShares U.S. Power Infrastructure ETF	5.50%	7.56%	4.36%	4.16%	4.82%	3.94%	3.96%	5.71%	3.17%	3.11%	2.75%	3.42%
SPYM State Street SPDR Portfolio S&P 500 ETF	1.28%	1.13%	1.28%	1.44%	1.69%	1.25%	1.54%	1.79%	2.23%	1.75%	1.97%	1.98%

Frequently Asked Questions

Can I hold both POWR and SPYM in my portfolio?

POWR and SPYM have a correlation of 0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, POWR or SPYM?

POWR has higher volatility (6.05%) compared to SPYM (4.47%). In terms of maximum drawdown, POWR dropped -65.98% vs SPYM's -54.46%.

Which ETF is better, POWR or SPYM?

On 10-year performance, SPYM leads with 15.66% vs 8.71% for POWR. On fees, SPYM is cheaper at 0.02% per year. On volatility, SPYM has been the lower-risk option at 4.47%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, POWR or SPYM?

Over the 10-year period, SPYM has performed better with a 15.66% return vs 8.71%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, POWR or SPYM?

SPYM is cheaper with a 0.02% expense ratio, compared with 0.40% for POWR.

Which ETF pays a higher dividend yield, POWR or SPYM?

POWR has the higher dividend yield at 5.50%, compared with 1.28% for SPYM.

What is the main difference between POWR and SPYM?

POWR is categorized as Utilities Equities, while SPYM is S&P 500. They also come from different issuers: iShares and State Street. Their fees differ too: 0.40% for POWR and 0.02% for SPYM.

Which has better risk-adjusted returns?

SPYM currently has the higher Sharpe Ratio (2.13 vs 1.18), 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.