PNW vs. ^GSPC

Last updated Apr 2, 2026

Compare and contrast key facts about Pinnacle West Capital Corporation (PNW) and S&P 500 Index (^GSPC).

Performance

PNW vs. ^GSPC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Pinnacle West Capital Corporation (PNW) and S&P 500 Index (^GSPC). The values are adjusted to include any dividend payments, if applicable.

PNW vs. ^GSPC - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PNW Pinnacle West Capital Corporation	15.59%	8.92%	23.46%	-1.18%	13.01%	-7.78%	-7.68%	9.06%	3.58%	12.67%
^GSPC S&P 500 Index	-3.95%	16.39%	23.31%	24.23%	-19.44%	26.89%	16.26%	28.88%	-6.24%	19.42%

Returns By Period

In the year-to-date period, PNW achieves a 15.59% return, which is significantly higher than ^GSPC's -3.95% return. Over the past 10 years, PNW has underperformed ^GSPC with an annualized return of 7.15%, while ^GSPC has yielded a comparatively higher 12.24% annualized return.

PNW

• 1D: 0.77%
• 1M: 0.99%
• YTD: 15.59%
• 6M: 17.48%
• 1Y: 10.86%
• 3Y*: 13.36%
• 5Y*: 9.13%
• 10Y*: 7.15%

^GSPC

• 1D: 0.72%
• 1M: -4.45%
• YTD: -3.95%
• 6M: -2.02%
• 1Y: 16.73%
• 3Y*: 16.96%
• 5Y*: 10.34%
• 10Y*: 12.24%

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

Return for Risk

PNW vs. ^GSPC — Risk / Return Rank

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

PNW

PNW Risk / Return Rank: 60
PNW Sharpe Ratio Rank: 64
PNW Sortino Ratio Rank: 55
PNW Omega Ratio Rank: 51
PNW Calmar Ratio Rank: 67
PNW Martin Ratio Rank: 65

^GSPC

^GSPC Risk / Return Rank: 67
^GSPC Sharpe Ratio Rank: 63
^GSPC Sortino Ratio Rank: 64
^GSPC Omega Ratio Rank: 69
^GSPC Calmar Ratio Rank: 60
^GSPC Martin Ratio Rank: 77

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.

PNW vs. ^GSPC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Pinnacle West Capital Corporation (PNW) and S&P 500 Index (^GSPC). 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.

	PNW	^GSPC	Difference
Sharpe ratio Return per unit of total volatility	0.65	0.92	-0.26
Sortino ratio Return per unit of downside risk	1.02	1.41	-0.40
Omega ratio Gain probability vs. loss probability	1.12	1.21	-0.10
Calmar ratio Return relative to maximum drawdown	1.29	1.41	-0.12
Martin ratio Return relative to average drawdown	2.73	6.61	-3.89
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PNW vs. ^GSPC - Sharpe Ratio Comparison

The current PNW Sharpe Ratio is 0.65, which is comparable to the ^GSPC Sharpe Ratio of 0.92. The chart below compares the historical Sharpe Ratios of PNW and ^GSPC, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	PNW	^GSPC	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.65	0.92	-0.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	0.61	-0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.32	0.68	-0.36
Sharpe Ratio (All Time) Calculated using the full available price history	0.30	0.46	-0.15

Correlation

The correlation between PNW and ^GSPC is 0.33, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Drawdowns

PNW vs. ^GSPC - Drawdown Comparison

The maximum PNW drawdown since its inception was -79.18%, which is greater than ^GSPC's maximum drawdown of -56.78%. Use the drawdown chart below to compare losses from any high point for PNW and ^GSPC.

Drawdown Indicators

	PNW	^GSPC	Difference
Max Drawdown Largest peak-to-trough decline	-79.18%	-56.78%	-22.40%
Max Drawdown (1Y) Largest decline over 1 year	-8.43%	-12.14%	+3.71%
Max Drawdown (5Y) Largest decline over 5 years	-28.14%	-25.43%	-2.71%
Max Drawdown (10Y) Largest decline over 10 years	-39.28%	-33.92%	-5.36%
Current Drawdown Current decline from peak	-1.50%	-5.78%	+4.28%
Average Drawdown Average peak-to-trough decline	-14.66%	-10.75%	-3.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.00%	2.60%	+1.40%

Volatility

PNW vs. ^GSPC - Volatility Comparison

The current volatility for Pinnacle West Capital Corporation (PNW) is 4.85%, while S&P 500 Index (^GSPC) has a volatility of 5.37%. This indicates that PNW experiences smaller price fluctuations and is considered to be less risky than ^GSPC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PNW	^GSPC	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.85%	5.37%	-0.52%
Volatility (6M) Calculated over the trailing 6-month period	11.11%	9.55%	+1.56%
Volatility (1Y) Calculated over the trailing 1-year period	16.69%	18.33%	-1.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.42%	16.90%	+3.52%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.62%	18.05%	+4.57%