Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionQuent Capital, LLC
Latest Disclosed Ownership782 shares
Latest Disclosed Value $ 224,223
Quent Capital, LLC reports 0.13% increase in ownership of CLH1 / Clean Harbors, Inc.

On April 28, 2026 - Quent Capital, LLC filed a 13F-HR form disclosing ownership of 782 shares of Clean Harbors, Inc. (MX:CLH1) valued at $224,223 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 781 shares of Clean Harbors, Inc.. This represents a change in shares of 0.13% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F CLEAN HARBORS INC COM Stock 184496107 782 1 0.13 224 22.40 0.0159
2026-01-29 2025-12-31 13F CLEAN HARBORS INC COM Stock 184496107 781 12 1.56 183 2.81 0.0132
2025-10-27 2025-09-30 13F CLEAN HARBORS INC COM Stock 184496107 769 769 179 0.0150
2025-07-21 2025-06-30 13F CLEAN HARBORS INC COM Stock 184496107 0 -747 -100.00 0 -100.00
2025-04-04 2025-03-31 13F CLEAN HARBORS INC COM Stock 184496107 747 18 2.47 147 -11.98 0.0154
2025-01-29 2024-12-31 13F CLEAN HARBORS INC COM Stock 184496107 729 4 0.55 168 -4.02 0.0174
2024-10-04 2024-09-30 13F CLEAN HARBORS INC COM Stock 184496107 725 0 0.00 174 6.75 0.0177
2024-07-08 2024-06-30 13F CLEAN HARBORS INC COM Stock 184496107 725 47 6.93 164 19.85 0.0180
2024-06-28 2024-03-31 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 678 0 0.00 136 15.25 0.0160
2024-05-02 2024-03-31 13F CLEAN HARBORS INC COM Stock 184496107 678 0 136 0.0159
2024-06-17 2023-12-31 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 678 22 3.35 118 8.26 0.0159
2024-01-19 2023-12-31 13F CLEAN HARBORS INC COM Stock 184496107 678 22 118 0.0159
2024-06-17 2023-09-30 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 656 -17 -2.53 110 -0.91 0.0171
2023-10-10 2023-09-30 13F CLEAN HARBORS INC COM Stock 184496107 656 -17 110 0.0171
2024-06-17 2023-06-30 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 673 43 6.83 111 23.60 0.0173
2023-07-10 2023-06-30 13F CLEAN HARBORS INC COM Stock 184496107 673 43 111 0.0173
2024-06-17 2023-03-31 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 630 7 1.12 89 25.35 0.0152
2023-04-06 2023-03-31 13F CLEAN HARBORS INC COM Stock 184496107 630 7 89 0.0152
2023-01-19 2022-12-31 13F CLEAN HARBORS INC COM Stock 184496107 623 0 0.00 71 2.90 0.0130
2022-11-10 2022-09-30 13F CLEAN HARBORS INC COM Stock 184496107 623 0 0.00 69 25.45 0.0143
2022-08-08 2022-06-30 13F CLEAN HARBORS INC COM Stock 184496107 623 0 0.00 55 -21.43 0.0117
2022-05-12 2022-03-31 13F CLEAN HARBORS INC COM Stock 184496107 623 122 24.35 70 40.00 0.0130
2022-05-12 2021-12-31 13F/A-1 CLEAN HARBORS INC COM Stock 184496107 501 501 50 0.0106
2022-02-28 2021-12-31 13F CLEAN HARBORS INC COM Stock 184496107 501 501 50 0.0137
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.