Who owns Sterling Infrastructure (STRL)?
154 holders named in SEC filings declare between 63.3% and 81.9% of Sterling Infrastructure's shares outstanding, as of Sep 21, 2026. The largest are BlackRock (10.1%), Vanguard (9.4%) and Fidelity (FMR) (3.8%); the five largest hold 29.4% together. Another 731 institutions hold small positions worth 5.8%. At least 12.3% 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 15.8% and sold 22.5% of the shares, a net sale of 6.7%; 222 opened a position, 199 added, 362 reduced and 45 sold out. Biggest buyers: Jane Street (+754,146 shares) and Lone Pine Capital LLC (+609,643 shares). Biggest sellers: BlackRock (-750,930) and Invesco (-409,233). Schedule 13D/G filings since Mar 31, 2026: BlackRock, Inc. raised its stake to 10.1% on Aug 31, 2026. Directors and officers, from their latest Form 4: Joseph A. Cutillo (0.95%) and Ronald A. Ballschmiede (0.84%). Over time, 867 managers declared Sterling Infrastructure in their 13F for Q2 2026, against 134 for Q4 2019: together at most 85.6% of the shares outstanding, against 79.6%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| BlackRock | 13G | 10.1% | Aug 31, 2026 | — |
| Vanguard | 13F | 9.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Fidelity (FMR) | 13F | 3.8% | Jun 30, 2026 | Q1 2021 |
| State Street | 13F | 3.1% | Jun 30, 2026 | Q4 2019 or earlier |
| FIRST TRUST ADVISORS LP | 13F | 2.9% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 2.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Jane Street | 13F | 2.5% | Jun 30, 2026 | Q3 2025 |
| Renaissance Technologies | 13F | 2.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Lone Pine Capital LLC | 13F | 2.0% | Jun 30, 2026 | Q2 2026 |
| Morgan Stanley | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Janus Henderson | 13F | 1.5% | Jun 30, 2026 | Q2 2022 |
| JPMorgan | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| JENNISON ASSOCIATES LLC | 13F | 1.2% | Jun 30, 2026 | Q4 2023 |
| Charles Schwab | 13F | 1.0% | Jun 30, 2026 | Q4 2019 or earlier |
| Millennium | 13F | 0.96% | Jun 30, 2026 | Q3 2025 |
| Capital Group | 13F | 0.95% | Jun 30, 2026 | Q3 2024 |
| Joseph A. Cutillo | Form 4 | 0.95% | Sep 21, 2026 | — |
| Mirae Asset | 13F | 0.89% | Jun 30, 2026 | Q4 2019 or earlier |
| Ronald A. Ballschmiede | Form 4 | 0.84% | Sep 2, 2025 | — |
| Dimensional | 13F | 0.84% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 0.82% | Jun 30, 2026 | Q4 2019 or earlier |
| Clark Capital Management Group, Inc. | 13F | 0.78% | Jun 30, 2026 | Q3 2023 |
| CONGRESS ASSET MANAGEMENT CO | 13F | 0.75% | Jun 30, 2026 | Q2 2023 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 13F | 0.73% | Jun 30, 2026 | Q3 2025 |
Sterling Infrastructure institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 134 | 79.6% | $314.5M | 77.0% |
| Q4 2020 | 137 | 80.2% | $419.6M | 70.0% |
| Q4 2021 | 162 | 82.4% | $624.5M | 68.6% |
| Q4 2022 | 201 | 78.9% | $784.9M | 64.3% |
| Q4 2023 | 289 | 82.1% | $2.2B | 63.0% |
| Q4 2024 | 435 | 86.5% | $4.5B | 59.0% |
| Q4 2025 | 629 | 90.8% | $8.5B | 50.7% |
| Q2 2026 | 867 | 85.6% | $22.1B | 47.9% |
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.