The largest holder of Pinnacle West Capital stock is Capital Research & Management Co. (Global Investors), with 16.5 million shares (13.61% of the company), worth about $1.61 billion as of September 25, 2026. The 10 largest holders together own 58.7%.
In Q2 2026, 750 institutional holdings reports listed shares worth $14.30 billion.
Insiders reported 66 transactions in the last two years: 5 sales worth $2.46 million and no purchases. The newest one on file is from May 13, 2026 (Tetlow Jacob, Chief Operating Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 13, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Capital Research & Management Co. (Global Investors) | 16.5 million | 13.61% | $1.6B |
| BlackRock Advisors LLC | 10.6 million | 8.71% | $1.0B |
| Vanguard Capital Management LLC | 7.9 million | 6.52% | $771.0M |
| State Street Corporation | 7.0 million | 5.79% | $685.0M |
| Barrow, Hanley, Mewhinney & Strauss LLC | 6.6 million | 5.43% | $642.0M |
| Vanguard Portfolio Management LLC | 6.0 million | 4.94% | $585.0M |
| Atlas Infrastructure Partners (UK) Ltd. | 5.3 million | 4.40% | $521.0M |
| Invesco Advisers, Inc. | 4.2 million | 3.44% | $407.0M |
| Soroban Capital Partners LP | 3.9 million | 3.20% | $378.0M |
| Geode Capital Management LLC | 3.2 million | 2.66% | $315.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 750 | – | $14.3B |
| Q1 2026 | 726 | 125.0 million | $12.6B |
| Q4 2025 | 676 | 122.0 million | $10.8B |
| Q3 2025 | 644 | 122.0 million | $10.4B |
| Q2 2025 | 650 | 117.0 million | $10.5B |
| Q1 2025 | 640 | 114.0 million | $10.9B |
| Q4 2024 | 642 | 113.0 million | $9.6B |
| Q3 2024 | 604 | 116.0 million | $10.2B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Tetlow Jacob | May 13, 2026 | Chief Operating Officer | Sale at price 99.00 - 99.01 per share. | $650,133 |
| Geisler Theodore N | Mar 18, 2026 | Chief Executive Officer | Stock Gift at price 0.00 per share. | – |
| Blankenship Elizabeth A. | Mar 18, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Geisler Theodore N | Mar 18, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Cooper Andrew D | Mar 18, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Tetlow Jacob | Mar 18, 2026 | Officer of Subsidiary Company | Stock Award(Grant) at price 0.00 per share. | – |
| Esparza Jose Luis Jr | Mar 18, 2026 | Divisional Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Baum Shirley A | Mar 18, 2026 | General Counsel | Stock Award(Grant) at price 0.00 per share. | – |
| Heflin Adam C. | Mar 18, 2026 | Officer of Subsidiary Company | Stock Award(Grant) at price 0.00 per share. | – |
| Blankenship Elizabeth A. | Feb 20, 2026 | Officer | -- | – |
| Geisler Theodore N | Feb 20, 2026 | Chief Executive Officer | -- | – |
| Cooper Andrew D | Feb 20, 2026 | Chief Financial Officer | -- | – |
Newest 12 of 66 insider transactions in the last two years.
Capital Research & Management Co. (Global Investors), with 13.61% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (8.71%) and Vanguard Capital Management LLC (6.52%).
750 institutional holdings reports listed Pinnacle West Capital shares in Q2 2026 worth $14.30 billion.
In the last two years insiders reported 5 sales and no purchases (66 transactions in all); the newest on file is from May 13, 2026.