Clean Harbors, Inc. (CLH) ownership: D1 Capital Partners L.P. 10% · institutions 96% (13F 2026-03-31). Insider activity, 90 days: 2 sales, 0 open-market buys. 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 4802492.00 | $1.38B | 9.1% | 2026-03-31 |
| Vanguard | 4525298.00 | $1.30B | 8.6% | 2026-03-31 |
| Wellington Management | 3577034.00 | $1.03B | 6.8% | 2026-03-31 |
| Janus Henderson | 2355394.00 | $675.37M | 4.5% | 2026-03-31 |
| FMR (Fidelity) | 2101179.00 | $602.47M | 4.0% | 2026-03-31 |
| Lone Pine Capital LLC | 1754950.00 | $503.20M | 3.3% | 2026-03-31 |
| State Street | 1537297.00 | $440.79M | 2.9% | 2026-03-31 |
| D1 Capital Partners L.P. | 1338281.00 | $383.73M | 2.5% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-14 | |
| Sell | null | 2026-08-03 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 | |
| Sell | null | 2026-07-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.