Who owns AAON (AAON)?
124 holders named in SEC filings declare between 68.4% and 92.0% of AAON's shares outstanding, as of Sep 30, 2026. The largest are Norman H. Asbjornson (15.5%), BlackRock (8.1%) and Vanguard (8.0%); the five largest hold 41.8% together. Another 349 institutions hold small positions worth 3.1%. At least 4.9% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 7.7% and sold 13.9% of the shares, a net sale of 6.2%; 104 opened a position, 121 added, 175 reduced and 35 sold out. Biggest buyers: Jane Street (+964,600 shares) and Fuller & Thaler Asset Management, Inc. (+917,551 shares). Biggest sellers: Wellington (-2.2M) and Champlain Investment Partners, LLC (-1.2M). Directors and officers, from their latest Form 4: Norman H. Asbjornson (15.5%). Over time, 464 managers declared AAON in their 13F for Q2 2026, against 160 for Q4 2019: together at most 79.6% of the shares outstanding, against 71.2%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Norman H. Asbjornson | Form 4 | 15.5% | Sep 1, 2026 | — |
| BlackRock | 13F | 8.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 8.0% | Jun 30, 2026 | Q4 2019 or earlier |
| Wellington | 13F | 7.0% | Jun 30, 2026 | Q4 2024 |
| State Street | 13F | 3.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Wasatch Advisors LP | 13F | 2.8% | Jun 30, 2026 | Q4 2019 or earlier |
| FIRST TRUST ADVISORS LP | 13F | 1.9% | Jun 30, 2026 | Q4 2021 |
| BLAIR WILLIAM & CO/IL | 13F | 1.9% | Jun 30, 2026 | Q2 2024 |
| Geode Capital | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Dimensional | 13F | 1.6% | Jun 30, 2026 | Q4 2019 or earlier |
| GENEVA CAPITAL MANAGEMENT LLC | 13F | 1.5% | Jun 30, 2026 | Q1 2020 |
| Morgan Stanley | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Capital Group | 13F | 1.3% | Jun 30, 2026 | Q4 2023 |
| Franklin Templeton | 13F | 1.2% | Jun 30, 2026 | Q1 2024 |
| Conestoga Capital Advisors, LLC | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Jane Street | 13F | 1.2% | Jun 30, 2026 | Q4 2025 |
| Fuller & Thaler Asset Management, Inc. | 13F | 1.1% | Jun 30, 2026 | Q2 2026 |
| PICTET ASSET MANAGEMENT SA | 13F | 1.1% | Jun 30, 2026 | Q3 2023 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 13F | 1.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Mawer Investment Management Ltd. | 13F | 1.0% | Jun 30, 2026 | Q1 2025 |
| Spyglass Capital Management LLC | 13F | 0.94% | Jun 30, 2026 | Q1 2025 |
| Copeland Capital Management, LLC | 13F | 0.91% | Jun 30, 2026 | Q3 2025 |
| Charles Schwab | 13F | 0.88% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 0.85% | Jun 30, 2026 | Q4 2019 or earlier |
| BOKF, NA | 13F | 0.83% | Jun 30, 2026 | Q4 2019 or earlier |
AAON institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 160 | 71.2% | $1.8B | 59.0% |
| Q4 2020 | 196 | 72.3% | $2.5B | 57.2% |
| Q4 2021 | 207 | 71.5% | $3.0B | 55.1% |
| Q4 2022 | 248 | 69.4% | $2.8B | 50.1% |
| Q4 2023 | 296 | 71.3% | $4.3B | 46.8% |
| Q4 2024 | 416 | 71.3% | $6.8B | 50.3% |
| Q4 2025 | 395 | 90.1% | $5.6B | 62.0% |
| Q2 2026 | 464 | 79.6% | $8.3B | 56.7% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.