Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership5,992 shares
Latest Disclosed Value $ 1,718,086
Bnp Paribas Arbitrage, Sa reports 2.29% increase in ownership of CLH1 / Clean Harbors, Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 5,992 shares of Clean Harbors, Inc. (MX:CLH1) valued at $1,718,086 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 5,858 shares of Clean Harbors, Inc.. This represents a change in shares of 2.29% 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)
2026-05-12 2026-03-31 13F Clean Harbors Equity 184496107 5,992 134 2.29 1,718 25.13 0.0008
2026-02-10 2025-12-31 13F Clean Harbors Equity 184496107 5,858 -1,187 -16.85 1,374 -16.02 0.0006
2025-11-13 2025-09-30 13F Clean Harbors Equity 184496107 7,045 -3,738 -34.67 1,636 -34.39 0.0009
2025-08-14 2025-06-30 13F Clean Harbors Equity 184496107 10,783 -1,538 -12.48 2,493 2.64 0.0014
2025-05-14 2025-03-31 13F Clean Harbors Equity 184496107 12,321 176 1.45 2,428 -13.13 0.0014
2025-02-14 2024-12-31 13F Clean Harbors Equity 184496107 12,145 664 5.78 2,795 0.72 0.0016
2024-11-13 2024-09-30 13F Clean Harbors Equity 184496107 11,481 -36,624 -76.13 2,775 -74.49 0.0019
2024-08-13 2024-06-30 13F Clean Harbors Equity 184496107 48,105 34,783 261.09 10,879 305.74 0.0089
2024-05-01 2024-03-31 13F Clean Harbors Equity 184496107 13,322 -6,476 -32.71 2,682 -22.51 0.0024
2024-02-14 2023-12-31 13F/A-2 Clean Harbors Equity 184496107 19,798 -3,549 -15.20 3,461 -11.44 0.0039
2024-02-07 2023-12-31 13F/A-1 Clean Harbors Equity 184496107 10,692 -12,655 1,866 0.0003
2024-02-07 2023-12-31 13F Clean Harbors Equity 184496107 10,692 1,866
2023-11-14 2023-09-30 13F Clean Harbors Equity 184496107 23,347 5,433 30.33 3,907 32.67 0.0050
2023-08-09 2023-06-30 13F Clean Harbors Equity 184496107 17,914 -14,144 -44.12 2,946 -35.56 0.0037
2023-05-12 2023-03-31 13F CLEAN HARBORS EQUITY 184496107 32,058 8,162 34.16 4,570 67.58 0.0064
2023-02-14 2022-12-31 13F Clean Harbors Equity 184496107 23,896 1,534 6.86 2,727 10.90 0.0042
2022-11-16 2022-09-30 13F/A-1 Clean Harbors Equity 184496107 22,362 13,186 143.70 2,459 205.85 0.0039
2022-11-15 2022-09-30 13F Clean Harbors Equity 184496107 22,362 13,186 2,459 0.0006
2022-08-12 2022-06-30 13F Clean Harbors Equity 184496107 9,176 -8,900 -49.24 804 -60.16 0.0013
2022-05-18 2022-03-31 13F/A-1 Clean Harbors Equity 184496107 18,076 -55,317 -75.37 2,018 -72.44 0.0027
2022-02-09 2021-12-31 13F CLEAN HARBORS EQUITY 184496107 73,393 66,478 961.36 7,322 919.78 0.0104
2021-11-16 2021-09-30 13F/A-1 CLEAN HARBORS EQUITY 184496107 6,915 -1,048 -13.16 718 -3.10 0.0010
2021-11-12 2021-09-30 13F CLEAN HARBORS EQUITY 184496107 37,234 29,271 2,086 0.0000
2021-08-10 2021-06-30 13F CLEAN HARBORS EQUITY 184496107 7,963 -2,880 -26.56 742 -18.66 0.0010
2021-05-07 2021-03-31 13F CLEAN HARBORS EQUITY 184496107 10,843 69 0.64 911 11.23 0.0013
2021-02-10 2020-12-31 13F CLEAN HARBORS EQUITY 184496107 10,774 -26,460 -71.06 820 -60.74 0.0015
2020-10-30 2020-09-30 13F CLEAN HARBORS EQUITY 184496107 37,234 -15,908 -29.93 2,086 -34.55 0.0030
2020-08-06 2020-06-30 13F CLEAN HARBORS EQUITY 184496107 53,142 -23,090 -30.29 3,187 -18.55 0.0056
2020-05-13 2020-03-31 13F CLEAN HARBORS EQUITY 184496107 76,232 -47,619 -38.45 3,914 -63.15 0.0080
2020-02-12 2019-12-31 13F CLEAN HARBORS EQUITY 184496107 123,851 112,224 965.20 10,620 1,083.95 0.0193
2019-11-07 2019-09-30 13F CLEAN HARBORS EQUITY 184496107 11,627 -275,646 -95.95 898 -95.61 0.0016
2019-07-30 2019-06-30 13F CLEAN HARBORS EQUITY 184496107 287,273 161,901 129.14 20,425 127.78 0.0407
2019-04-25 2019-03-31 13F CLEAN HARBORS EQUITY 184496107 125,372 124,434 13,265.88 8,968 19,393.48 0.0194
2019-02-12 2018-12-31 13F CLEAN HARBORS EQUITY 184496107 938 -5,192 -84.70 46 -89.50 0.0001
2018-11-07 2018-09-30 13F CLEAN HARBORS EQUITY 184496107 6,130 -1,850 -23.18 439 -1.13 0.0006
2018-07-25 2018-06-30 13F CLEAN HARBORS EQUITY 184496107 7,980 4,950 163.37 443 201.36 0.0007
2018-05-11 2018-03-31 13F CLEAN HARBORS EQUITY 184496107 3,030 -8,439 -73.58 148 -76.33 0.0003
2018-03-05 2017-12-31 13F/A-1 CLEAN HARBORS EQUITY 184496107 11,469 -6,700 -36.88 622 -39.71 0.0011
2018-02-01 2017-12-31 13F CLEAN HARBORS EQUITY 184496107 11,469 -6,700 622
2017-11-03 2017-09-30 13F CLEAN HARBORS STOCK 184496107 18,169 -3,839 -17.44 1,030 -16.12 0.0025
2017-08-03 2017-06-30 13F CLEAN HARBORS STOCK 184496107 22,008 8,663 64.92 1,229 65.50 0.0037
2017-05-03 2017-03-31 13F CLEAN HARBORS STOCK 184496107 13,345 -3,125 -18.97 742 -19.00 0.0020
2017-02-14 2016-12-31 13F CLEAN HARBORS STOCK 184496107 16,470 10,457 173.91 917 218.06 0.0043
2016-10-05 2016-09-30 13F * CLEAN HARBORS INC COM STOCK 184496107 6,013 -16,113 -72.82 289 -75.00 0.0012
2016-07-06 2016-06-30 13F * CLEAN HARBORS INC COM STOCK 184496107 22,126 20,647 1,396.01 1,153 1,500.00 0.0052
2016-04-22 2016-03-31 13F * CLEAN HARBORS INC COM STOCK 184496107 1,479 432 41.26 73 67.44 0.0003
2016-04-19 2015-12-31 13F/A-1 * CLEAN HARBORS INC COM STOCK 184496107 1,047 -8,861 -89.43 44 -90.11 0.0002
2016-02-10 2015-12-31 13F * CLEAN HARBORS INC COM STOCK 184496107 1,047 44
2015-11-13 2015-09-30 13F * CLEAN HARBORS INC COM STOCK 184496107 9,908 -8,001 -44.68 436 -54.78 0.0011
2015-08-14 2015-06-30 13F CLEAN HARBORS INC COM STOCK 184496107 17,909 -10,362 -36.65 962 -40.06 0.0027
2015-05-15 2015-03-31 13F * CLEAN HARBORS INC COM STOCK 184496107 28,271 13,162 87.11 1,605 121.38 0.0044
2015-03-10 2014-12-31 13F/A-1 * CLEAN HARBORS INC COM STOCK 184496107 15,109 -21,865 -59.14 726 -63.62 0.0026
2015-02-11 2014-12-31 13F * CLEAN HARBORS INC COM STOCK 184496107 15,109 726
2014-11-12 2014-09-30 13F * CLEAN HARBORS INC COM STOCK 184496107 36,974 1,270 3.56 1,994 -13.08 0.0017
2014-08-14 2014-06-30 13F/A-1 * CLEAN HARBORS INC COM STOCK 184496107 35,704 -14,006 -28.18 2,294 -23.11 0.0022
2014-08-14 2014-06-30 13F CLEAN HARBORS INC COM STOCK 184496107 35,704 2,294
2014-05-13 2014-03-31 13F CLEAN HARBORS STOCK 184496107 49,710 -18,341 -26.95 2,983 -26.91 0.0023
2014-04-02 2013-12-31 13F/A-1 CLEAN HARBORS STOCK 184496107 68,051 39,900 141.74 4,080 147.12 0.0030
2014-02-12 2013-12-31 13F CLEAN HARBORS STOCK 184496107 68,051 4,080
2013-11-13 2013-09-30 13F CLEAN HARBORS STOCK 184496107 28,151 7,402 35.67 1,651 57.54 0.0012
2013-08-13 2013-06-30 13F CLEAN HARBORS STOCK 184496107 20,749 20,749 1,048 0.0007
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.