Pinnacle West Capital (PNW) Market Cap 1985–2026

As of October 16, 2026, Pinnacle West Capital had a market cap of $12.53 billion, which increased by 1.79% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Oct 16, 2026, 4:00 PM ET

Pinnacle West Capital Corp. (PNW)

🌍 United States 📈 NYSE 🏭 Utilities 🏢 Electric Utilities

Latest Market Cap

$12.53B ▲ 1.79%

Start of 2026

$10.62B ▲ 17.98%

1 Year Ago

$11.12B ▲ 12.68%

All-Time High

$13.25B ▼ 5.43%

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Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Pinnacle West Capital Market Cap History by Year and Month

Pinnacle West Capital Market Cap History by Year and Month
Year / Month	Market Cap	% Change
2026	$12.53B	▲ 17.98%
October 16, 2026	$12.53B	▲ 11.08%
September 30, 2026	$11.28B	▼ 4.65%
August 31, 2026	$11.83B	▼ 3.35%
July 31, 2026	$12.24B	▼ 5.63%
June 30, 2026	$12.97B	▲ 7.28%
May 29, 2026	$12.09B	▼ 3.59%
April 30, 2026	$12.54B	▲ 2.96%
March 31, 2026	$12.18B	▲ 1.50%
February 27, 2026	$12B	▲ 7.14%
January 30, 2026	$11.2B	▲ 5.46%
2025	$10.62B	▲ 5.19%
December 31, 2025	$10.62B	▼ 2.39%
November 28, 2025	$10.88B	▲ 2.93%
October 31, 2025	$10.57B	▼ 1.31%
September 30, 2025	$10.71B	▲ 0.37%
August 29, 2025	$10.67B	▼ 1.39%
July 31, 2025	$10.82B	▲ 1.31%
June 30, 2025	$10.68B	▼ 1.93%
May 30, 2025	$10.89B	▼ 4.14%
April 30, 2025	$11.36B	▼ 0.09%
March 31, 2025	$11.37B	▲ 3.18%
February 28, 2025	$11.02B	▲ 6.37%
January 31, 2025	$10.36B	▲ 2.61%
2024	$10.096B	▲ 23.92%
December 31, 2024	$10.096B	▼ 5.24%
November 29, 2024	$10.654B	▲ 6.71%
October 31, 2024	$9.984B	▼ 0.81%
September 30, 2024	$10.066B	▲ 1.24%
August 30, 2024	$9.943B	▲ 2.25%
July 31, 2024	$9.724B	▲ 12.11%
June 28, 2024	$8.674B	▼ 3.14%
May 31, 2024	$8.955B	▲ 7.07%
April 30, 2024	$8.364B	▼ 1.44%
March 28, 2024	$8.486B	▲ 9.48%
February 29, 2024	$7.751B	▼ 0.82%
January 31, 2024	$7.815B	▼ 4.08%
2023	$8.147B	▼ 5.30%
December 29, 2023	$8.147B	▼ 4.13%
November 30, 2023	$8.498B	▲ 1.02%
October 31, 2023	$8.412B	▲ 0.75%
September 29, 2023	$8.349B	▼ 4.64%
August 31, 2023	$8.755B	▼ 6.70%
July 31, 2023	$9.384B	▲ 1.67%
June 30, 2023	$9.23B	▲ 5.45%
May 31, 2023	$8.753B	▼ 1.50%
April 28, 2023	$8.886B	▼ 0.98%
March 31, 2023	$8.974B	▲ 7.61%
February 28, 2023	$8.339B	▼ 1.16%
January 31, 2023	$8.437B	▼ 1.93%
2022	$8.603B	▲ 7.92%
December 30, 2022	$8.603B	▼ 2.91%
November 30, 2022	$8.861B	▲ 16.53%
October 31, 2022	$7.604B	▲ 4.25%
September 30, 2022	$7.294B	▼ 14.37%
August 31, 2022	$8.518B	▲ 2.56%
July 29, 2022	$8.305B	▲ 0.48%
June 30, 2022	$8.265B	▼ 5.80%
May 31, 2022	$8.774B	▲ 9.05%
April 29, 2022	$8.046B	▼ 8.83%
March 31, 2022	$8.825B	▲ 10.33%
February 28, 2022	$7.999B	▲ 1.76%
January 31, 2022	$7.861B	▼ 1.39%
2021	$7.972B	▼ 11.52%
December 31, 2021	$7.972B	▲ 8.63%
November 30, 2021	$7.339B	▲ 0.87%
October 29, 2021	$7.276B	▼ 10.88%
September 30, 2021	$8.164B	▼ 5.88%
August 31, 2021	$8.674B	▼ 7.96%
July 30, 2021	$9.424B	▲ 1.94%
June 30, 2021	$9.245B	▼ 3.05%
May 28, 2021	$9.536B	▼ 0.08%
April 30, 2021	$9.544B	▲ 4.06%
March 31, 2021	$9.172B	▲ 16.40%
February 26, 2021	$7.88B	▼ 7.08%
January 29, 2021	$8.48B	▼ 5.88%
2020	$9.01B	▼ 10.90%
December 31, 2020	$9.01B	▼ 2.24%
November 30, 2020	$9.216B	▲ 0.34%
October 30, 2020	$9.185B	▲ 9.42%
September 30, 2020	$8.394B	▲ 1.67%
August 31, 2020	$8.256B	▼ 11.71%
July 31, 2020	$9.351B	▲ 13.35%
June 30, 2020	$8.25B	▼ 5.85%
May 29, 2020	$8.763B	▲ 1.18%
April 30, 2020	$8.661B	▲ 1.58%
March 31, 2020	$8.526B	▼ 15.27%
February 28, 2020	$10.062B	▼ 8.39%
January 31, 2020	$10.984B	▲ 8.62%
2019	$10.112B	▲ 5.87%
December 31, 2019	$10.112B	▲ 2.93%
November 29, 2019	$9.824B	▼ 7.15%
October 31, 2019	$10.58B	▼ 2.99%
September 30, 2019	$10.906B	▲ 1.90%
August 30, 2019	$10.703B	▲ 4.48%
July 31, 2019	$10.244B	▼ 3.03%
June 28, 2019	$10.564B	▲ 0.19%
May 31, 2019	$10.544B	▼ 1.43%
April 30, 2019	$10.697B	▼ 0.32%
March 29, 2019	$10.731B	▲ 2.07%
February 28, 2019	$10.513B	▲ 6.43%
January 31, 2019	$9.878B	▲ 3.42%
2018	$9.551B	▲ 0.36%
December 31, 2018	$9.551B	▼ 4.63%
November 30, 2018	$10.015B	▲ 8.72%
October 31, 2018	$9.212B	▲ 3.90%
September 28, 2018	$8.866B	▲ 0.81%
August 31, 2018	$8.795B	▼ 2.34%
July 31, 2018	$9.006B	▼ 0.12%
June 29, 2018	$9.017B	▲ 1.19%
May 31, 2018	$8.911B	▼ 1.10%
April 30, 2018	$9.01B	▲ 0.87%
March 29, 2018	$8.932B	▲ 3.81%
February 28, 2018	$8.604B	▼ 3.69%
January 31, 2018	$8.934B	▼ 6.13%
2017	$9.517B	▲ 9.57%
December 29, 2017	$9.517B	▼ 7.22%
November 30, 2017	$10.258B	▲ 4.67%
October 31, 2017	$9.8B	▲ 3.82%
September 29, 2017	$9.439B	▼ 6.00%
August 31, 2017	$10.042B	▲ 3.73%
July 31, 2017	$9.681B	▲ 1.84%
June 30, 2017	$9.506B	▼ 3.55%
May 31, 2017	$9.856B	▲ 3.82%
April 28, 2017	$9.493B	▲ 2.05%
March 31, 2017	$9.302B	▲ 1.65%
February 28, 2017	$9.151B	▲ 5.88%
January 31, 2017	$8.643B	▼ 0.50%
2016	$8.686B	▲ 21.38%
December 30, 2016	$8.686B	▲ 5.55%
November 30, 2016	$8.229B	▼ 2.89%
October 31, 2016	$8.474B	▲ 0.26%
September 30, 2016	$8.452B	▲ 1.32%
August 31, 2016	$8.342B	▼ 4.86%
July 29, 2016	$8.768B	▼ 2.70%
June 30, 2016	$9.011B	▲ 10.17%
May 31, 2016	$8.179B	▲ 1.30%
April 29, 2016	$8.074B	▼ 3.22%
March 31, 2016	$8.343B	▲ 9.20%
February 29, 2016	$7.64B	▲ 3.82%
January 29, 2016	$7.359B	▲ 2.84%
2015	$7.156B	▼ 5.26%
December 31, 2015	$7.156B	▲ 1.89%
November 30, 2015	$7.023B	▼ 0.24%
October 30, 2015	$7.04B	▼ 0.98%
September 30, 2015	$7.11B	▲ 7.78%
August 31, 2015	$6.597B	▼ 3.52%
July 31, 2015	$6.838B	▲ 8.47%
June 30, 2015	$6.304B	▼ 6.57%
May 29, 2015	$6.747B	▼ 0.46%
April 30, 2015	$6.778B	▼ 3.99%
March 31, 2015	$7.06B	▼ 0.37%
February 27, 2015	$7.086B	▼ 8.69%
January 30, 2015	$7.76B	▲ 2.74%
2014	$7.553B	▲ 29.53%
December 31, 2014	$7.553B	▲ 8.15%
November 28, 2014	$6.984B	▲ 2.87%
October 31, 2014	$6.789B	▲ 12.49%
September 30, 2014	$6.035B	▼ 4.02%
August 29, 2014	$6.288B	▲ 6.47%
July 31, 2014	$5.906B	▼ 7.52%
June 30, 2014	$6.386B	▲ 4.41%
May 30, 2014	$6.116B	▼ 0.96%
April 30, 2014	$6.175B	▲ 2.37%
March 31, 2014	$6.032B	▼ 1.63%
February 28, 2014	$6.132B	▲ 5.74%
January 31, 2014	$5.799B	▼ 0.55%
2013	$5.831B	▲ 4.22%
December 31, 2013	$5.831B	▼ 0.70%
November 29, 2013	$5.872B	▼ 4.77%
October 31, 2013	$6.166B	▲ 2.41%
September 30, 2013	$6.021B	▲ 0.85%
August 30, 2013	$5.97B	▼ 7.86%
July 31, 2013	$6.479B	▲ 6.23%
June 28, 2013	$6.099B	▼ 1.79%
May 31, 2013	$6.21B	▼ 7.26%
April 30, 2013	$6.696B	▲ 5.22%
March 28, 2013	$6.364B	▲ 3.65%
February 28, 2013	$6.14B	▲ 4.81%
January 31, 2013	$5.858B	▲ 4.70%
2012	$5.595B	▲ 6.37%
December 31, 2012	$5.595B	▼ 0.89%
November 30, 2012	$5.645B	▼ 2.86%
October 31, 2012	$5.811B	▲ 0.47%
September 28, 2012	$5.784B	▲ 2.79%
August 31, 2012	$5.627B	▼ 4.06%
July 31, 2012	$5.865B	▲ 3.55%
June 29, 2012	$5.664B	▲ 4.77%
May 31, 2012	$5.406B	▲ 2.13%
April 30, 2012	$5.293B	▲ 1.03%
March 30, 2012	$5.239B	▲ 1.97%
February 29, 2012	$5.138B	▼ 0.48%
January 31, 2012	$5.163B	▼ 1.84%
2011	$5.26B	▲ 16.66%
December 30, 2011	$5.26B	▲ 1.62%
November 30, 2011	$5.176B	▲ 4.02%
October 31, 2011	$4.976B	▲ 6.21%
September 30, 2011	$4.685B	▼ 2.94%
August 31, 2011	$4.827B	▲ 4.46%
July 29, 2011	$4.621B	▼ 4.92%
June 30, 2011	$4.86B	▼ 1.50%
May 31, 2011	$4.934B	▲ 4.31%
April 29, 2011	$4.73B	▲ 1.46%
March 31, 2011	$4.662B	▲ 1.48%
February 28, 2011	$4.594B	▲ 3.75%
January 31, 2011	$4.428B	▼ 1.80%
2010	$4.509B	▲ 21.54%
December 31, 2010	$4.509B	▲ 2.62%
November 30, 2010	$4.394B	▼ 1.81%
October 29, 2010	$4.475B	▼ 0.20%
September 30, 2010	$4.484B	▲ 3.58%
August 31, 2010	$4.329B	▲ 4.62%
July 30, 2010	$4.138B	▲ 4.95%
June 30, 2010	$3.943B	▲ 3.55%
May 28, 2010	$3.808B	▲ 0.45%
April 30, 2010	$3.791B	▼ 1.04%
March 31, 2010	$3.831B	▲ 3.71%
February 26, 2010	$3.694B	▲ 1.68%
January 29, 2010	$3.633B	▼ 2.08%
2009	$3.71B	▲ 14.54%
December 31, 2009	$3.71B	▲ 4.39%
November 30, 2009	$3.554B	▲ 12.04%
October 30, 2009	$3.172B	▼ 4.49%
September 30, 2009	$3.321B	▼ 0.27%
August 31, 2009	$3.33B	▲ 2.97%
July 31, 2009	$3.234B	▲ 6.10%
June 30, 2009	$3.048B	▲ 9.05%
May 29, 2009	$2.795B	▲ 0.98%
April 30, 2009	$2.768B	▲ 3.21%
March 31, 2009	$2.682B	▲ 1.13%
February 27, 2009	$2.652B	▼ 21.40%
January 30, 2009	$3.374B	▲ 4.17%
2008	$3.239B	▼ 24.00%
December 31, 2008	$3.239B	▲ 5.68%
November 28, 2008	$3.065B	▼ 3.95%
October 31, 2008	$3.191B	▼ 7.93%
September 30, 2008	$3.466B	▼ 2.23%
August 29, 2008	$3.545B	▲ 4.82%
July 31, 2008	$3.382B	▲ 9.13%
June 30, 2008	$3.099B	▼ 8.83%
May 30, 2008	$3.399B	▼ 0.47%
April 30, 2008	$3.415B	▼ 3.26%
March 31, 2008	$3.53B	▼ 1.20%
February 29, 2008	$3.573B	▼ 7.17%
January 31, 2008	$3.849B	▼ 9.69%
2007	$4.262B	▼ 15.79%
December 31, 2007	$4.262B	▼ 0.93%
November 30, 2007	$4.302B	▲ 6.09%
October 31, 2007	$4.055B	▲ 2.32%
September 28, 2007	$3.963B	▼ 0.83%
August 31, 2007	$3.996B	▲ 6.28%
July 31, 2007	$3.76B	▼ 5.88%
June 29, 2007	$3.995B	▼ 14.16%
May 31, 2007	$4.654B	▼ 3.86%
April 30, 2007	$4.841B	▲ 0.33%
March 30, 2007	$4.825B	▲ 1.75%
February 28, 2007	$4.742B	▼ 2.77%
January 31, 2007	$4.877B	▼ 3.64%
2006	$5.061B	▲ 23.62%
December 29, 2006	$5.061B	▲ 2.72%
November 30, 2006	$4.927B	▲ 3.20%
October 31, 2006	$4.774B	▲ 6.51%
September 29, 2006	$4.482B	▼ 1.93%
August 31, 2006	$4.57B	▲ 6.80%
July 31, 2006	$4.279B	▲ 7.78%
June 30, 2006	$3.97B	▲ 1.61%
May 31, 2006	$3.907B	▼ 1.78%
April 28, 2006	$3.978B	▲ 2.55%
March 31, 2006	$3.879B	▼ 4.60%
February 28, 2006	$4.066B	▼ 3.67%
January 31, 2006	$4.221B	▲ 3.10%
2005	$4.094B	▲ 0.44%
December 30, 2005	$4.094B	▼ 0.34%
November 30, 2005	$4.108B	▼ 0.63%
October 31, 2005	$4.134B	▼ 5.27%
September 30, 2005	$4.364B	▼ 1.65%
August 31, 2005	$4.437B	▼ 1.90%
July 29, 2005	$4.523B	▲ 3.03%
June 30, 2005	$4.39B	▲ 1.18%
May 31, 2005	$4.339B	▲ 5.29%
April 29, 2005	$4.121B	▼ 1.44%
March 31, 2005	$4.181B	▲ 9.11%
February 28, 2005	$3.832B	▲ 0.10%
January 31, 2005	$3.828B	▼ 6.08%
2004	$4.076B	▲ 11.58%
December 31, 2004	$4.076B	▲ 0.72%
November 30, 2004	$4.047B	▲ 3.80%
October 29, 2004	$3.899B	▲ 2.71%
September 30, 2004	$3.796B	▼ 1.53%
August 31, 2004	$3.855B	▲ 4.19%
July 30, 2004	$3.7B	▲ 0.27%
June 30, 2004	$3.69B	▲ 0.24%
May 28, 2004	$3.681B	▲ 3.14%
April 30, 2004	$3.569B	▼ 0.72%
March 31, 2004	$3.595B	▲ 0.73%
February 27, 2004	$3.569B	▼ 0.39%
January 30, 2004	$3.583B	▼ 1.92%
2003	$3.653B	▲ 17.42%
December 31, 2003	$3.653B	▲ 1.64%
November 28, 2003	$3.594B	▲ 7.70%
October 31, 2003	$3.337B	▲ 2.99%
September 30, 2003	$3.24B	▲ 3.48%
August 29, 2003	$3.131B	▼ 0.03%
July 31, 2003	$3.132B	▼ 8.37%
June 30, 2003	$3.418B	▼ 1.07%
May 30, 2003	$3.455B	▲ 13.99%
April 30, 2003	$3.031B	▼ 0.07%
March 31, 2003	$3.033B	▲ 8.83%
February 28, 2003	$2.787B	▼ 1.97%
January 31, 2003	$2.843B	▼ 8.61%
2002	$3.111B	▼ 12.37%
December 31, 2002	$3.111B	▲ 14.29%
November 29, 2002	$2.722B	▲ 12.67%
October 31, 2002	$2.416B	▲ 2.68%
September 30, 2002	$2.353B	▼ 16.91%
August 30, 2002	$2.832B	▼ 1.80%
July 31, 2002	$2.884B	▼ 13.91%
June 28, 2002	$3.35B	▼ 1.53%
May 31, 2002	$3.402B	▼ 8.45%
April 30, 2002	$3.716B	▼ 3.33%
March 28, 2002	$3.844B	▲ 11.74%
February 28, 2002	$3.44B	▲ 1.75%
January 31, 2002	$3.381B	▼ 4.76%
2001	$3.55B	▼ 12.00%
December 31, 2001	$3.55B	▲ 0.45%
November 30, 2001	$3.534B	▼ 0.95%
October 31, 2001	$3.568B	▲ 6.10%
September 28, 2001	$3.363B	▼ 11.01%
August 31, 2001	$3.779B	▲ 5.50%
July 31, 2001	$3.582B	▼ 10.81%
June 29, 2001	$4.016B	▼ 5.10%
May 31, 2001	$4.232B	▼ 0.49%
April 30, 2001	$4.253B	▲ 9.42%
March 30, 2001	$3.887B	▼ 1.35%
February 28, 2001	$3.94B	▲ 7.59%
January 31, 2001	$3.662B	▼ 9.22%
2000	$4.034B	▲ 55.63%
December 29, 2000	$4.034B	▲ 2.28%
November 30, 2000	$3.944B	▲ 7.17%
October 31, 2000	$3.68B	▼ 14.64%
September 29, 2000	$4.311B	▲ 23.52%
August 31, 2000	$3.49B	▲ 4.12%
July 31, 2000	$3.352B	▲ 16.79%
June 30, 2000	$2.87B	▼ 5.25%
May 31, 2000	$3.029B	▲ 1.95%
April 28, 2000	$2.971B	▲ 24.41%
March 31, 2000	$2.388B	▲ 1.92%
February 29, 2000	$2.343B	▼ 10.54%
January 31, 2000	$2.619B	▲ 1.04%
1999	$2.592B	▼ 27.88%
December 31, 1999	$2.592B	▼ 7.82%
November 30, 1999	$2.812B	▼ 10.02%
October 29, 1999	$3.125B	▲ 1.40%
September 30, 1999	$3.082B	▼ 4.32%
August 31, 1999	$3.221B	▼ 4.84%
July 30, 1999	$3.385B	▼ 0.79%
June 30, 1999	$3.412B	▼ 3.94%
May 28, 1999	$3.552B	▲ 7.90%
April 30, 1999	$3.292B	▲ 6.71%
March 31, 1999	$3.085B	▲ 0.69%
February 26, 1999	$3.064B	▼ 9.70%
January 29, 1999	$3.393B	▼ 5.59%
1998	$3.594B	— 0.00%
December 31, 1998	$3.594B	▼ 6.92%
November 30, 1998	$3.861B	▲ 4.01%
October 30, 1998	$3.712B	▼ 2.24%
September 30, 1998	$3.797B	▲ 3.74%
August 31, 1998	$3.66B	▲ 1.02%
July 31, 1998	$3.623B	▼ 4.98%
June 30, 1998	$3.813B	▲ 0.05%
May 29, 1998	$3.811B	▲ 1.55%
April 30, 1998	$3.753B	▼ 0.42%
March 31, 1998	$3.769B	▲ 8.87%
February 27, 1998	$3.462B	▲ 2.03%
January 30, 1998	$3.393B	▼ 5.59%
1997	$3.594B	▲ 29.33%
December 31, 1997	$3.594B	▲ 10.01%
November 28, 1997	$3.267B	▲ 10.78%
October 31, 1997	$2.949B	▲ 3.51%
September 30, 1997	$2.849B	▲ 3.64%
August 29, 1997	$2.749B	▲ 2.35%
July 31, 1997	$2.686B	▲ 5.00%
June 30, 1997	$2.558B	▲ 2.32%
May 30, 1997	$2.5B	▲ 3.09%
April 30, 1997	$2.425B	▼ 5.38%
March 31, 1997	$2.563B	▼ 6.29%
February 28, 1997	$2.735B	▼ 1.19%
January 31, 1997	$2.768B	▼ 0.40%
1996	$2.779B	▲ 10.54%
December 31, 1996	$2.779B	▲ 2.13%
November 29, 1996	$2.721B	▲ 0.82%
October 31, 1996	$2.699B	▲ 4.21%
September 30, 1996	$2.59B	▲ 3.02%
August 30, 1996	$2.514B	▲ 1.78%
July 31, 1996	$2.47B	▼ 7.00%
June 28, 1996	$2.656B	▲ 14.63%
May 31, 1996	$2.317B	▼ 0.47%
April 30, 1996	$2.328B	▼ 7.80%
March 29, 1996	$2.525B	▲ 2.14%
February 29, 1996	$2.472B	▼ 4.26%
January 31, 1996	$2.582B	▲ 2.70%
1995	$2.514B	▲ 46.59%
December 29, 1995	$2.514B	▲ 5.54%
November 30, 1995	$2.382B	▼ 0.92%
October 31, 1995	$2.404B	▲ 4.75%
September 29, 1995	$2.295B	▲ 5.57%
August 31, 1995	$2.174B	▲ 2.02%
July 31, 1995	$2.131B	▼ 0.51%
June 30, 1995	$2.142B	▲ 6.57%
May 31, 1995	$2.01B	▲ 6.97%
April 28, 1995	$1.879B	▲ 3.02%
March 31, 1995	$1.824B	▼ 2.98%
February 28, 1995	$1.88B	▲ 3.64%
January 31, 1995	$1.814B	▲ 5.77%
1994	$1.715B	▼ 12.32%
December 30, 1994	$1.715B	▲ 1.30%
November 30, 1994	$1.693B	▲ 3.99%
October 31, 1994	$1.628B	▲ 4.23%
September 30, 1994	$1.562B	▼ 3.40%
August 31, 1994	$1.617B	▲ 4.93%
July 29, 1994	$1.541B	▲ 7.69%
June 30, 1994	$1.431B	▼ 5.79%
May 31, 1994	$1.519B	▼ 15.75%
April 29, 1994	$1.803B	▲ 3.15%
March 31, 1994	$1.748B	▼ 6.47%
February 28, 1994	$1.869B	▼ 4.45%
January 31, 1994	$1.956B	— 0.00%
1993	$1.956B	▲ 10.14%
December 31, 1993	$1.956B	▲ 6.02%
November 30, 1993	$1.845B	▼ 8.16%
October 29, 1993	$2.009B	▼ 5.64%
September 30, 1993	$2.129B	▼ 1.44%
August 31, 1993	$2.16B	▲ 1.03%
July 30, 1993	$2.138B	▲ 5.95%
June 30, 1993	$2.018B	▲ 4.67%
May 28, 1993	$1.928B	— 0.00%
April 30, 1993	$1.928B	▲ 2.28%
March 31, 1993	$1.885B	▲ 0.59%
February 26, 1993	$1.874B	▲ 6.18%
January 29, 1993	$1.765B	▼ 0.62%
1992	$1.776B	▲ 17.46%
December 31, 1992	$1.776B	▲ 3.92%
November 30, 1992	$1.709B	▼ 1.84%
October 30, 1992	$1.741B	▲ 3.20%
September 30, 1992	$1.687B	▼ 0.59%
August 31, 1992	$1.697B	— 0.00%
July 31, 1992	$1.697B	▲ 7.54%
June 30, 1992	$1.578B	▲ 1.41%
May 29, 1992	$1.556B	▲ 0.71%
April 30, 1992	$1.545B	▲ 0.72%
March 31, 1992	$1.534B	▼ 2.04%
February 28, 1992	$1.566B	▼ 0.70%
January 31, 1992	$1.577B	▲ 4.30%
1991	$1.512B	▲ 73.99%
December 31, 1991	$1.512B	▲ 8.70%
November 29, 1991	$1.391B	▲ 20.75%
October 31, 1991	$1.152B	▲ 0.96%
September 30, 1991	$1.141B	▲ 11.64%
August 30, 1991	$1.022B	▲ 10.61%
July 31, 1991	$0.924B	▲ 7.57%
June 28, 1991	$0.859B	▼ 5.91%
May 31, 1991	$0.913B	▼ 2.35%
April 30, 1991	$0.935B	▲ 0.11%
March 28, 1991	$0.934B	▼ 8.52%
February 28, 1991	$1.021B	▲ 11.95%
January 31, 1991	$0.912B	▲ 4.95%
1990	$0.869B	▼ 9.95%
December 31, 1990	$0.869B	▼ 10.04%
November 30, 1990	$0.966B	▼ 1.13%
October 31, 1990	$0.977B	▲ 15.48%
September 28, 1990	$0.846B	▼ 39.53%
August 31, 1990	$1.399B	▼ 11.01%
July 31, 1990	$1.572B	▲ 10.63%
June 29, 1990	$1.421B	▲ 2.38%
May 31, 1990	$1.388B	▲ 31.94%
April 30, 1990	$1.052B	▼ 14.12%
March 30, 1990	$1.225B	▲ 16.56%
February 28, 1990	$1.051B	▲ 11.45%
January 31, 1990	$0.943B	▼ 2.28%
1989	$0.965B	▼ 29.36%
December 29, 1989	$0.965B	▲ 112.09%
November 30, 1989	$0.455B	▼ 43.27%
October 31, 1989	$0.802B	▼ 24.48%
September 29, 1989	$1.062B	▼ 3.98%
August 31, 1989	$1.106B	▲ 9.72%
July 31, 1989	$1.008B	▼ 2.14%
June 30, 1989	$1.03B	▼ 7.79%
May 31, 1989	$1.117B	▼ 2.79%
April 28, 1989	$1.149B	▼ 7.04%
March 31, 1989	$1.236B	▼ 5.00%
February 28, 1989	$1.301B	▼ 2.40%
January 31, 1989	$1.333B	▼ 2.42%
1988	$1.366B	▼ 42.82%
December 30, 1988	$1.366B	▼ 0.80%
November 30, 1988	$1.377B	▼ 9.29%
October 31, 1988	$1.518B	▼ 21.35%
September 30, 1988	$1.93B	▼ 1.43%
August 31, 1988	$1.958B	▼ 3.74%
July 29, 1988	$2.034B	▼ 4.51%
June 30, 1988	$2.13B	▲ 4.98%
May 31, 1988	$2.029B	▼ 6.93%
April 29, 1988	$2.18B	▼ 7.31%
March 31, 1988	$2.352B	▼ 0.63%
February 29, 1988	$2.367B	▼ 3.94%
January 29, 1988	$2.464B	▲ 3.14%
1987	$2.389B	▲ 5.15%
December 31, 1987	$2.389B	▲ 2.93%
November 30, 1987	$2.321B	▼ 1.82%
October 30, 1987	$2.364B	▼ 10.49%
September 30, 1987	$2.641B	▲ 6.15%
August 31, 1987	$2.488B	▼ 0.44%
July 31, 1987	$2.499B	▼ 5.48%
June 30, 1987	$2.644B	▲ 2.40%
May 29, 1987	$2.582B	▲ 2.46%
April 30, 1987	$2.52B	▼ 2.02%
March 31, 1987	$2.572B	▲ 1.14%
February 27, 1987	$2.543B	▲ 4.14%
January 30, 1987	$2.442B	▲ 7.48%
1986	$2.272B	▲ 12.14%
December 31, 1986	$2.272B	▲ 2.67%
November 28, 1986	$2.213B	▲ 2.64%
October 31, 1986	$2.156B	▼ 2.58%
September 30, 1986	$2.213B	▼ 8.63%
August 29, 1986	$2.422B	▲ 11.87%
July 31, 1986	$2.165B	▼ 3.00%
June 30, 1986	$2.232B	▲ 8.67%
May 30, 1986	$2.054B	▼ 2.19%
April 30, 1986	$2.1B	▼ 5.87%
March 31, 1986	$2.231B	▲ 4.35%
February 28, 1986	$2.138B	▲ 6.00%
January 31, 1986	$2.017B	▼ 0.44%
1985	$2.026B	▲ 32.07%
December 31, 1985	$2.026B	▲ 5.58%
November 29, 1985	$1.919B	▲ 7.69%
October 31, 1985	$1.782B	▲ 6.52%
September 30, 1985	$1.673B	▼ 4.18%
August 30, 1985	$1.746B	▼ 3.96%
July 31, 1985	$1.818B	▼ 7.01%
June 28, 1985	$1.955B	▲ 10.95%
May 31, 1985	$1.762B	▲ 3.59%
April 30, 1985	$1.701B	▲ 6.05%
March 29, 1985	$1.604B	▲ 8.31%
February 28, 1985	$1.481B	▼ 0.60%
January 31, 1985	$1.49B	▼ 2.87%

All market cap values reflect closing prices for the period shown.

📊 Pinnacle West Capital Market Cap and Other Industry Peers

Below are selected companies from the Electric Utilities sector / subsector:

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.