CLH
Clean Harbors, Inc. · Industrials · Waste Management
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 185.12K | $57.17M | n/a | n/a |
| Q2 2026 | 136 | +5 | 32.16M | $9.61B | +10 | −4 |
| Q1 2026 | 133 | +6 | 33.81M | $9.68B | +10 | −5 |
| Q4 2025 | 126 | 0 | 36.55M | $8.53B | +3 | −2 |
| Q3 2025 | 17 | -3 | 18.72M | $4.35B | +1 | −5 |
| Q2 2025 | 18 | -1 | 19.25M | $4.45B | +1 | −2 |
| Q1 2025 | 16 | +2 | 9.92M | $1.95B | +4 | −2 |
| Q4 2024 | 14 | -2 | 8.18M | $1.88B | +2 | −4 |
| Q3 2024 | 15 | +4 | 6.01M | $1.45B | +4 | n/a |
| Q2 2024 | 11 | n/a | 6.21M | $1.40B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 168.14K | +15.9% | $52.16M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 16.98K | +71.1% | $5.00M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | TD Waterhouse Canada Inc. | 1 | 0.0% | $313 | 0.0% | Held | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 619 holders, 49.16M shares, $13.40B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 2.50K sh · $803,350
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology