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Clean Harbors Inc

CLH
Exchange
NYSE
Industry
Hazardous Waste Management
SEC CIK
0000822818

In the last 90 days, Clean Harbors Inc insiders filed 0 open-market purchases and 5 sales; 663 institutions reported holding it in 13F filings for Q2 2026, worth $14.8B in total; D1 Capital Partners is the only superinvestor holding it.

13F holders, Q1 2026

Institutional positions in Clean Harbors Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
626
+66 vs. Q4 2025
Shares held
49.3M
+3.03M (+6.5%) vs. Q4 2025
Total value
$14.1B
+$3.28B (+30.2%) vs. Q4 2025
New holders
115
211 more added
Sold out
49
197 more reduced

8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CLH on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 626 institutions
Q1 2021: 289 institutionsQ2 2021: 286 institutionsQ3 2021: 309 institutionsQ4 2021: 327 institutionsQ1 2022: 345 institutionsQ2 2022: 337 institutionsQ3 2022: 369 institutionsQ4 2022: 380 institutionsQ1 2023: 405 institutionsQ2 2023: 417 institutionsQ3 2023: 421 institutionsQ4 2023: 450 institutionsQ1 2024: 481 institutionsQ2 2024: 518 institutionsQ3 2024: 572 institutionsQ4 2024: 573 institutionsQ1 2025: 563 institutionsQ2 2025: 579 institutionsQ3 2025: 569 institutionsQ4 2025: 568 institutionsQ1 2026: 626 institutionsQ2 2026: 663 institutions
Value heldQ1 2026: $14.1B
Q1 2021: $4.07BQ2 2021: $4.48BQ3 2021: $5.02BQ4 2021: $4.78BQ1 2022: $5.38BQ2 2022: $4.23BQ3 2022: $5.31BQ4 2022: $5.49BQ1 2023: $6.88BQ2 2023: $8.16BQ3 2023: $8.31BQ4 2023: $8.50BQ1 2024: $9.67BQ2 2024: $10.9BQ3 2024: $11.5BQ4 2024: $11.3BQ1 2025: $9.61BQ2 2025: $11.4BQ3 2025: $11.6BQ4 2025: $12.1BQ1 2026: $14.1BQ2 2026: $14.8B
Institutions holding CLH and their total value by quarter
QuarterHoldersValue
Q2 2026663$14.8B
Q1 2026626$14.1B
Q4 2025568$12.1B
Q3 2025569$11.6B
Q2 2025579$11.4B
Q1 2025563$9.61B
Q4 2024573$11.3B
Q3 2024572$11.5B
Q2 2024518$10.9B
Q1 2024481$9.67B
Q4 2023450$8.50B
Q3 2023421$8.31B
Q2 2023417$8.16B
Q1 2023405$6.88B
Q4 2022380$5.49B
Q3 2022369$5.31B
Q2 2022337$4.23B
Q1 2022345$5.38B
Q4 2021327$4.78B
Q3 2021309$5.02B
Q2 2021286$4.48B
Q1 2021289$4.07B

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Clean Harbors Inc; share changes are against Q4 2025.

Institutions holding CLH in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
TD Asset Management Inc12,798$3.67M0.00%+12,798New
Vanguard Investments Australia, Ltd.12,789$3.67M0.01%+12,789New
Summit Trail Advisors, LLC12,779$3.66M0.05%+1,677+15.1%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys12,584$3.61M0.02%+15+0.1%Added
ExodusPoint Capital Management, LP12,381$3.55M0.04%+12,381New
Ensign Peak Advisors, Inc12,343$3.54M0.01%+9,522+337.5%Added
K.J. Harrison & Partners Inc12,295$3.53M0.58%−800−6.1%Reduced
State of Michigan Retirement System12,107$3.47M0.02%+200+1.7%Added
Bridges Investment Management Inc12,068$3.46M0.05%+1,652+15.9%Added
Advisors Asset Management, Inc.11,980$3.44M0.06%+2,231+22.9%Added
Worldquant Millennium Advisors LLC11,710$3.36M0.01%+11,710New
Northwestern Mutual Investment Management Company, LLC11,253$3.23M0.05%+16+0.1%Added
M&T Bank Corp11,245$3.22M0.01%−3,369−23.1%Reduced
JustInvest LLC11,155$3.20M0.03%+917+9.0%Added
Concentric Capital Strategies, LP11,085$3.18M0.28%+11,085New
Entropy Technologies, LP11,072$3.17M0.15%+11,072New
Sandler Capital Management11,027$3.16M2.15%+11,027New
Edentree Asset Management Ltd11,002$3.15M0.95%00.0%Unchanged
Deroy & Devereaux Private Investment Counsel Inc10,925$3.13M0.15%+50+0.5%Added
Cerity Partners LLC10,444$2.99M0.00%+2,272+27.8%Added
Oregon Public Employees Retirement Fund10,316$2.96M0.04%+280+2.8%Added
New Mexico Educational Retirement Board10,300$2.95M0.09%00.0%Unchanged
Groupe la Francaise10,300$2.95M0.04%−480−4.5%Reduced
Gradient Investments LLC10,174$2.92M0.05%+10,174New
Gallo Partners, LP10,049$2.88M5.51%+10,049New
EverSource Wealth Advisors, LLC9,948$2.85M0.09%+61+0.6%Added
Robeco Schweiz AG9,500$2.72M0.06%−108,090−91.9%Reduced
Daiwa Securities Group Inc.9,289$2.66M0.01%−28,835−75.6%Reduced
Colonial Trust Advisors9,128$2.62M0.20%−60−0.7%Reduced
Union Bancaire Privee, UBP SA9,136$2.55M0.05%−6,001−39.6%Reduced
Southeast Asset Advisors Inc.8,759$2.51M0.28%+1,795+25.8%Added
HighTower Advisors, LLC8,416$2.41M0.00%+510+6.5%Added
Heights Point Management, LP8,340$2.39M2.22%+8,340New
Richard Bernstein Advisors LLC8,064$2.31M0.07%+8,064New
Susquehanna Portfolio Strategies, LLC8,018$2.30M0.03%00.0%Unchanged
Cinctive Capital Management LP7,985$2.29M0.15%+6,830+591.3%Added
Teacher Retirement System of Texas7,790$2.23M0.01%+3,091+65.8%Added
Shelton Capital Management7,709$2.21M0.05%−56−0.7%Reduced
Coyle Financial Counsel LLC7,626$2.19M0.46%−610−7.4%Reduced
Dana Investment Advisors, Inc.7,543$2.16M0.06%−137−1.8%Reduced
CAPROCK Group, Inc.7,498$2.15M0.05%−1,022−12.0%Reduced
Ecofi Investissements SA7,450$2.13M3.89%−20,150−73.0%Reduced
Benjamin Edwards Inc7,444$2.13M0.02%+202+2.8%Added
Creative Planning7,228$2.07M0.00%+1,293+21.8%Added
Congress Park Capital LLC7,097$2.03M0.62%−5−0.1%Reduced
Aventail Capital Group, LP7,013$2.01M0.10%+172+2.5%Added
Maridea Wealth Management LLC6,858$1.97M0.29%+1,112+19.4%Added
TimesSquare Capital Management, LLC6,796$1.95M0.03%+26+0.4%Added
The PNC Financial Services Group, Inc.6,726$1.93M0.00%+701+11.6%Added
Vestmark Advisory Solutions, Inc.6,684$1.92M0.02%−2,978−30.8%Reduced
Captrust Financial Advisors6,577$1.89M0.00%+588+9.8%Added
Wiley Bros.-Aintree Capital, LLC6,339$1.82M0.01%−704−10.0%Reduced
Numerai GP LLC6,137$1.76M0.18%+6,137New
Xponance, Inc.6,132$1.76M0.01%+1,408+29.8%Added
Engineers Gate Manager LP6,002$1.72M0.02%+2,036+51.3%Added
BNP Paribas Arbitrage, SA5,992$1.72M0.00%+134+2.3%Added
Pacer Advisors, Inc.5,964$1.71M0.00%−50−0.8%Reduced
Allstate Corp5,892$1.69M0.02%+5,892New
South Dakota Investment Council5,829$1.67M0.03%−500−7.9%Reduced
Acadian Asset Management LLC5,813$1.66M0.00%+5,116+734.0%Added
New Age Alpha Advisors, LLC5,749$1.65M0.08%−127−2.2%Reduced
Voya Investment Management LLC5,551$1.59M0.00%−1,449−20.7%Reduced
HighVista Strategies LLC5,543$1.59M0.44%−700−11.2%Reduced
Ieq Capital, LLC5,469$1.57M0.01%+5,469New
NVWM, LLC5,417$1.55M0.35%−36−0.7%Reduced
Truvestments Capital LLC5,388$1.54M0.28%+174+3.3%Added
Okabena Investment Services Inc5,249$1.51M0.29%−1,536−22.6%Reduced
Advisor Group Holdings, Inc.5,248$1.50M0.00%+695+15.3%Added
Federation des caisses Desjardins du Quebec5,147$1.48M0.01%−1,083−17.4%Reduced
Public Employees Retirement Association of Colorado5,081$1.46M0.01%00.0%Unchanged
Dark Forest Capital Management LP5,051$1.45M0.13%+1,827+56.7%Added
Truist Financial Corp5,019$1.44M0.00%−1,558−23.7%Reduced
Settian Capital LP5,000$1.43M1.00%00.0%Unchanged
Jefferies Financial Group Inc.4,954$1.42M0.02%+954+23.8%Added
Franklin Resources Inc4,940$1.42M0.00%+231+4.9%Added
Inscription Capital, LLC4,892$1.40M0.15%−888−15.4%Reduced
Ashton Thomas Private Wealth, LLC4,877$1.40M0.03%−75−1.5%Reduced
O'Shaughnessy Asset Management, LLC4,848$1.39M0.01%+789+19.4%Added
Wealth Enhancement Advisory Services, LLC4,626$1.37M0.00%−1,214−20.8%Reduced
LMCG Investments, LLC4,760$1.36M0.08%−673−12.4%Reduced
Robeco Institutional Asset Management B.V.4,666$1.34M0.00%−373−7.4%Reduced
Pathstone Holdings, LLC4,559$1.31M0.01%+119+2.7%Added
Knollwood Investment Advisory, LLC4,500$1.29M0.13%00.0%Unchanged
Baird Financial Group, Inc.4,476$1.28M0.00%−21−0.5%Reduced
Concurrent Investment Advisors, LLC4,451$1.28M0.01%−249−5.3%Reduced
Aaron Wealth Advisors4,279$1.23M0.07%−574−11.8%Reduced
Nisa Investment Advisors, LLC4,173$1.20M0.00%+6+0.1%Added
AXA S.A.4,161$1.19M0.47%−415−9.1%Reduced
Odyssean, LLC4,145$1.19M0.43%+1,084+35.4%Added
Occudo Quantitative Strategies LP3,783$1.18M0.06%+3,783New
Quadrant Capital Group LLC4,103$1.18M0.04%+179+4.6%Added
Hantz Financial Services, Inc.4,011$1.15M0.02%+557+16.1%Added
Rithm Capital Corp.4,000$1.15M1.70%+300+8.1%Added
AIA Group Ltd3,971$1.14M0.02%00.0%Unchanged
Campbell & CO Investment Adviser LLC3,969$1.14M0.06%+3,969New
Syon Capital LLC3,967$1.14M0.06%−259−6.1%Reduced
XTX Topco Ltd3,896$1.12M0.02%+1,267+48.2%Added
Cambridge Investment Research Advisors, Inc.3,888$1.11M0.00%−530−12.0%Reduced
Hancock Whitney Corp3,523$1.10M0.02%−128−3.5%Reduced
Chicago Partners Investment Group LLC3,598$1.10M0.02%+376+11.7%Added