Clean Harbors, Inc.
MX ˙ BMV ˙ US1844961078
SecurityMX:CLH1 / Clean Harbors, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership87 shares
Latest Disclosed Value $ 24,946
Advisory Services Network, LLC ownership in CLH1 / Clean Harbors, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 87 shares of Clean Harbors, Inc. (MX:CLH1) valued at $24,946 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Clean Harbors, Inc..

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)
2026-05-15 2026-03-31 13F CLEAN HARBORS Stock 184496107 87 87 25 0.0002
2026-02-17 2025-12-31 13F CLEAN HARBORS Stock 184496107 0 -42 -100.00 0 -100.00
2025-11-18 2025-09-30 13F CLEAN HARBORS Stock 184496107 42 42 10 0.0001
2025-05-15 2025-03-31 13F CLEAN HARBORS Stock 184496107 0 -4,515 -100.00 0 -100.00
2025-02-13 2024-12-31 13F CLEAN HARBORS Stock 184496107 4,515 4,515 1,039 0.0194
2024-05-06 2024-03-31 13F CLEAN HARBORS Stock 184496107 0 -805 -100.00 0 -100.00
2024-02-09 2023-12-31 13F CLEAN HARBORS Stock 184496107 805 -8,281 -91.14 140 -90.79 0.0034
2023-11-14 2023-09-30 13F CLEAN HARBORS Stock 184496107 9,086 -444 -4.66 1,521 -3.00 0.0408
2023-08-09 2023-06-30 13F CLEAN HARBORS Stock 184496107 9,530 1,526 19.07 1,567 37.34 0.0418
2023-05-17 2023-03-31 13F CLEAN HARBORS Stock 184496107 8,004 7,905 7,984.85 1,141 10,272.73 0.0316
2023-02-13 2022-12-31 13F CLEAN HARBORS Stock 184496107 99 99 11 0.0003
2021-11-05 2021-09-30 13F CLEAN HARBORS Stock 184496107 0 -14 -100.00 0 -100.00
2021-08-12 2021-06-30 13F CLEAN HARBORS Stock 184496107 14 14 1 0.0000
2021-05-24 2021-03-31 13F CLEAN HARBORS Stock 184496107 0 -5 -100.00 0 -100.00 0.0000
2021-02-09 2020-12-31 13F CLEAN HARBORS Stock 184496107 5 -8 -61.54 0 -100.00
2020-11-16 2020-09-30 13F CLEAN HARBORS Stock 184496107 13 13 160.00 1 0.0000
2020-08-10 2020-06-30 13F CLEAN HARBORS Stock 184496107 0 -9 -100.00 0 -100.00 0.0000
2020-05-15 2020-03-31 13F CLEAN HARBORS Stock 184496107 9 -1,173 -99.24 0 -100.00
2020-02-04 2019-12-31 13F CLEAN HARBORS Stock 184496107 1,182 1,182 13,033.33 101 0.0053
2019-02-15 2018-12-31 13F CLEAN HARBORS Stock 184496107 0 -116 -100.00 0 -100.00
2018-11-02 2018-09-30 13F CLEAN HARBORS Stock 184496107 116 -88 -43.14 8 -27.27 0.0006
2018-07-27 2018-06-30 13F CLEAN HARBORS Stock 184496107 204 23 12.71 11 22.22 0.0008
2018-04-23 2018-03-31 13F CLEAN HARBORS Stock 184496107 181 51 39.23 9 28.57 0.0007
2018-02-08 2017-12-31 13F CLEAN HARBORS Stock 184496107 130 0 0.00 7 0.00 0.0006
2017-10-12 2017-09-30 13F CLEAN HARBORS Stock 184496107 130 0 0.00 7 0.00 0.0008
2017-08-17 2017-06-30 13F CLEAN HARBORS INC COM Stock 184496107 130 0 0.00 7 0.00 0.0009
2017-04-28 2017-03-31 13F CLEAN HARBORS INC COM Stock 184496107 130 -1 -0.76 7 16.67 0.0010
2016-10-07 2016-09-30 13F CLEAN HARBORS Stock 184496107 131 60 84.51 6 50.00 0.0011
2016-07-27 2016-06-30 13F CLEAN HARBORS Stock 184496107 71 -60 -45.80 4 -33.33 0.0009
2016-04-21 2016-03-31 13F CLEAN HARBORS Stock 184496107 131 -60 -31.41 6 -25.00 0.0016
2016-01-27 2015-12-31 13F CLEAN HARBORS INC COM Stock 184496107 191 30 18.63 8 14.29 0.0026
2015-10-01 2015-09-30 13F CLEAN HARBORS INC COM Stock 184496107 161 55 51.89 7 16.67 0.0021
2015-07-02 2015-06-30 13F CLEAN HARBORS INC COM Stock 184496107 106 106 6 0.0018
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.