Clean Harbors shares owned by Oberweis Asset Management
Quarter-by-quarter ownership of Clean Harbors (CLH) shares owned by Oberweis Asset Management
from 13F filings
Historical chart of Oberweis Asset Management investment in Clean Harbors
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Quarterly reported holdings in Clean Harbors by Oberweis Asset Management
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $27M | 117k | 232.22 |
| 2025-06-30 | $27M | 117k | 231.18 |
| 2025-03-31 | $22M | 110k | 197.10 |
| 2024-12-31 | $24M | 102k | 230.14 |
| 2024-09-30 | $26M | 105k | 241.71 |
| 2024-06-30 | $23M | 103k | 226.15 |
| 2024-03-31 | $16M | 81k | 201.31 |
| 2023-12-31 | $10M | 57k | 174.51 |
| 2023-09-30 | $7.6M | 45k | 167.36 |
| 2023-06-30 | $7.4M | 45k | 164.43 |
| 2023-03-31 | $7.2M | 51k | 142.56 |
| 2022-12-31 | $5.5M | 48k | 114.12 |
| 2022-09-30 | $2.5M | 23k | 109.99 |
| 2022-06-30 | $1.0M | 12k | 87.64 |
| 2022-03-31 | $547k | 4.9k | 111.63 |
| 2021-12-31 | $289k | 2.9k | 99.66 |
| 2021-09-30 | $301k | 2.9k | 103.79 |
| 2021-06-30 | $335k | 3.6k | 93.06 |
| 2021-03-31 | $303k | 3.6k | 84.17 |
| 2020-12-31 | $304k | 4.0k | 76.00 |
| 2019-03-31 | $258k | 3.6k | 71.67 |
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