CLEAN HARBORS INC · CUSIP 184496107 · CIK 2022905
As of 2026-03-31, Charter Oak Advisors LP reported 63.21K CLH (shares), valued at $18.13M, or 10.99% of its reported non-derivative portfolio. Filed 2026-05-14.
Verify history & sources →Shares increased 4.17%; reported value increased 27.38%, and weight changed -0.97 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | Not reported | Not reported | — |
| Q1 2026 | 10.99% | 63,214 | SEC filing ↗Filed May 14, 2026 |
| Q4 2025 | 11.96% | 60,686 | SEC filing ↗Filed Feb 13, 2026 |
| Q3 2025 | 8.39% | 64,586 | SEC filing ↗Filed Nov 13, 2025 |
| Q2 2025 | 9.18% | 64,586 | SEC filing ↗Filed Aug 13, 2025 |
| Q1 2025 | 9.08% | 64,586 | SEC filing ↗Filed May 13, 2025 |
| Q4 2024 | 9.77% | 66,359 | SEC filing ↗Filed Feb 13, 2025 |
| Q3 2024 | Not reported | Not reported | No filing this quarter |
| Q2 2024 | Not reported | Not reported | No filing this quarter |
| Q1 2024 | Not reported | Not reported | No filing this quarter |
| Q4 2023 | Not reported | Not reported | No filing this quarter |
| Q3 2023 | Not reported | Not reported | No filing this quarter |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | Not reported | — | — | The manager filed nothing for this quarter; a missing quarter is not treated as zero holdings. | — |
| Q4 2023 | Not reported | — | — | The manager filed nothing for this quarter; a missing quarter is not treated as zero holdings. | — |
| Q1 2024 | Not reported | — | — | The manager filed nothing for this quarter; a missing quarter is not treated as zero holdings. | — |
| Q2 2024 | Not reported | — | — | The manager filed nothing for this quarter; a missing quarter is not treated as zero holdings. | — |
| Q3 2024 | Not reported | — | — | The manager filed nothing for this quarter; a missing quarter is not treated as zero holdings. | — |
| Q4 2024 | 9.77% | 66,359 | $15.27M | A comparable prior-quarter record is unavailable; changes are not inferred. | SEC filing ↗ Filed Feb 13, 2025 |
| Q1 2025 | 9.08% | 64,586 | $12.73M | Shares decreased 2.67%; reported value decreased 16.64%, and weight changed -0.69 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 13, 2025 |
| Q2 2025 | 9.18% | 64,586 | $14.93M | Shares unchanged; reported value increased 17.29%, and weight changed +0.10 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 13, 2025 |
| Q3 2025 | 8.39% | 64,586 | $15.00M | Shares unchanged; reported value increased 0.45%, and weight changed -0.79 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 13, 2025 |
| Q4 2025 | 11.96% | 60,686 | $14.23M | Shares decreased 6.04%; reported value decreased 5.12%, and weight changed +3.57 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 13, 2026 |
| Q1 2026 | 10.99% | 63,214 | $18.13M | Shares increased 4.17%; reported value increased 27.38%, and weight changed -0.97 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 14, 2026 |
| Q2 2026 | Not reported | — | — | This security is absent from this quarter's filing; a missing record is not treated as zero holdings. | — |
Take these holdings further.
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Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.