Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership2,014 shares
Latest Disclosed Value $ 577,474
ProShare Advisors LLC ownership in CLH1 / Clean Harbors, Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 2,014 shares of Clean Harbors, Inc. (MX:CLH1) valued at $577,474 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 2,014 shares of Clean Harbors, Inc.. This represents a change in shares of 0.00% 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)
2026-04-24 2026-03-31 13F CLEAN HARBORS COM 184496107 2,014 0 0.00 577 22.25 0.0009
2026-02-06 2025-12-31 13F CLEAN HARBORS COM 184496107 2,014 -130 -6.06 472 -5.03 0.0008
2025-11-06 2025-09-30 13F CLEAN HARBORS COM 184496107 2,144 -89 -3.99 498 -3.68 0.0010
2025-08-07 2025-06-30 13F CLEAN HARBORS COM 184496107 2,233 75 3.48 516 21.41 0.0010
2025-05-08 2025-03-31 13F CLEAN HARBORS COM 184496107 2,158 -213 -8.98 425 -22.02 0.0010
2025-02-14 2024-12-31 13F CLEAN HARBORS COM 184496107 2,371 160 7.24 546 2.06 0.0012
2024-11-14 2024-09-30 13F CLEAN HARBORS COM 184496107 2,211 -155 -6.55 534 -0.19 0.0013
2024-08-13 2024-06-30 13F CLEAN HARBORS COM 184496107 2,366 -87 -3.55 535 8.52 0.0014
2024-05-08 2024-03-31 13F CLEAN HARBORS COM 184496107 2,453 -196 -7.40 494 6.71 0.0013
2024-02-14 2023-12-31 13F CLEAN HARBORS COM 184496107 2,649 -70 -2.57 462 1.54 0.0014
2023-11-13 2023-09-30 13F CLEAN HARBORS COM 184496107 2,719 -221 -7.52 455 -5.80 0.0014
2023-08-10 2023-06-30 13F CLEAN HARBORS COM 184496107 2,940 -52 -1.74 483 13.38 0.0014
2023-05-26 2023-03-31 13F/A-1 CLEAN HARBORS COM 184496107 2,992 -285 -8.70 427 14.21 0.0013
2023-05-12 2023-03-31 13F CLEAN HARBORS COM 184496107 2,992 -285 427 0.0014
2023-02-02 2022-12-31 13F CLEAN HARBORS COM 184496107 3,277 389 13.47 374 17.67 0.0013
2022-11-07 2022-09-30 13F CLEAN HARBORS COM 184496107 2,888 -13 -0.45 317 24.80 0.0012
2022-08-01 2022-06-30 13F CLEAN HARBORS COM 184496107 2,901 -1,146 -28.32 254 -43.68 0.0008
2022-05-10 2022-03-31 13F CLEAN HARBORS COM 184496107 4,047 -725 -15.19 451 -5.45 0.0010
2022-02-08 2021-12-31 13F CLEAN HARBORS COM 184496107 4,772 1,088 29.53 477 24.54 0.0009
2021-11-12 2021-09-30 13F CLEAN HARBORS COM 184496107 3,684 -472 -11.36 383 -1.03 0.0011
2021-08-13 2021-06-30 13F CLEAN HARBORS COM 184496107 4,156 55 1.34 387 12.17 0.0011
2021-05-14 2021-03-31 13F CLEAN HARBORS COM 184496107 4,101 -85 -2.03 345 8.15 0.0011
2021-02-09 2020-12-31 13F CLEAN HARBORS COM 184496107 4,186 557 15.35 319 57.14 0.0012
2020-11-13 2020-09-30 13F CLEAN HARBORS COM 184496107 3,629 53 1.48 203 -5.14 0.0009
2020-08-03 2020-06-30 13F CLEAN HARBORS COM 184496107 3,576 3,576 214 0.0011
2020-05-15 2020-03-31 13F CLEAN HARBORS COM 184496107 0 -4,596 -100.00 0 -100.00
2020-02-12 2019-12-31 13F CLEAN HARBORS COM 184496107 4,596 496 12.10 394 24.29 0.0018
2019-11-12 2019-09-30 13F CLEAN HARBORS COM 184496107 4,100 -198 -4.61 317 3.59 0.0018
2019-08-13 2019-06-30 13F CLEAN HARBORS COM 184496107 4,298 -169 -3.78 306 -4.37 0.0018
2019-05-15 2019-03-31 13F CLEAN HARBORS COM 184496107 4,467 4,467 320 0.0019
2019-02-14 2018-12-31 13F CLEAN HARBORS COM 184496107 0 -4,526 -100.00 0 -100.00
2018-11-14 2018-09-30 13F CLEAN HARBORS COM 184496107 4,526 -201 -4.25 324 23.19 0.0022
2018-08-13 2018-06-30 13F CLEAN HARBORS COM 184496107 4,727 12 0.25 263 14.35 0.0018
2018-05-14 2018-03-31 13F CLEAN HARBORS COM 184496107 4,715 -187 -3.81 230 -13.53 0.0015
2018-02-14 2017-12-31 13F CLEAN HARBORS COM 184496107 4,902 1,303 36.20 266 30.39 0.0018
2017-11-13 2017-09-30 13F CLEAN HARBORS COM 184496107 3,599 -314 -8.02 204 -6.42 0.0019
2017-08-11 2017-06-30 13F CLEAN HARBORS COM 184496107 3,913 -821 -17.34 218 -17.11 0.0022
2017-05-12 2017-03-31 13F/A-2 CLEAN HARBORS COM 184496107 4,734 -682 -12.59 263 -12.62 0.0028
2017-05-08 2017-03-31 13F/A-1 CLEAN HARBORS COM 184496107 4,734 0 263 0.0028
2017-04-25 2017-03-31 13F CLEAN HARBORS COM 184496107 4,734 263
2017-02-13 2016-12-31 13F CLEAN HARBORS COM 184496107 5,416 989 22.34 301 41.98 0.0033
2016-11-10 2016-09-30 13F CLEAN HARBORS COM 184496107 4,427 -315 -6.64 212 -14.17 0.0030
2016-08-12 2016-06-30 13F CLEAN HARBORS COM 184496107 4,742 -602 -11.26 247 -6.44 0.0032
2016-05-06 2016-03-31 13F CLEAN HARBORS COM 184496107 5,344 178 3.45 264 22.79 0.0036
2016-02-05 2015-12-31 13F CLEAN HARBORS COM 184496107 5,166 627 13.81 215 7.50 0.0026
2015-11-06 2015-09-30 13F CLEAN HARBORS COM 184496107 4,539 -2,618 -36.58 200 -48.05 0.0028
2015-08-11 2015-06-30 13F CLEAN HARBORS COM 184496107 7,157 -605 -7.79 385 -12.70 0.0053
2015-05-08 2015-03-31 13F CLEAN HARBORS COM 184496107 7,762 7,762 0.00 441 0.0052
2015-01-30 2014-12-31 13F CLEAN HARBORS COM 184496107 0 -28,718 -100.00 0 -100.00
2014-11-06 2014-09-30 13F CLEAN HARBORS COM 184496107 28,718 3,131 12.24 1,548 -5.84 0.0205
2014-08-08 2014-06-30 13F CLEAN HARBORS COM 184496107 25,587 19,648 330.83 1,644 405.85 0.0213
2014-05-07 2014-03-31 13F CLEAN HARBORS COM 184496107 5,939 -34,096 -85.17 325 -86.46 0.0041
2014-02-04 2013-12-31 13F CLEAN HARBORS COM 184496107 40,035 34,686 648.46 2,400 664.33 0.0358
2013-11-07 2013-09-30 13F CLEAN HARBORS COM 184496107 5,349 5,349 314 0.0075
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.