CLEAN HARBORS INC

$CLH

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Smart money positioned

13 of the Top-200 alpha managers hold $CLH as of the latest 13F snapshot.

13F holders

625

Insider buys · 90d

Congress · 90d

1trades

Smart Money · top-200 alpha cohort

13 holders · Q1 2026

$CLH is held by 13 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 1.64%, with an average of 0.25% of portfolio. Largest holder: Sandler Capital Management at 1.64%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

Sandler Capital Management

1.64% NEW

α +12.8pts

D L Carlson Investment Group Inc.

0.95% held

α +17.7pts

Oribel Capital Management, LP

0.25% NEW

α +12.0pts

Wellington Management Group LLP

0.19% held

α +10.5pts

New Age Alpha Advisors, LLC

0.08% held

α +10.8pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 625 · Source: 13F-HR

Gardner Russo & Quinn LLC

0.19% of portfolio

3,608,532 sh

Thomas H Lee Partners LP

Augustine Asset Management Inc.

Independent Investors Inc.

EDENTREE ASSET MANAGEMENT Ltd

0.38% of portfolio

1,242,142 sh

Bank of Nova Scotia Trust Co.

0.30% of portfolio

1,202,777 sh

See all 625 13F holders · Pro →

Insider activity · last 90 days

18 transactions · 10 filers

26 May 2026

States Lauren —

▼ SOLD

789

$286.19

16 Dec 2025

Gerstenberg Eric W —

▼ SOLD

601

$240.90

01 Aug 2025

Battles Michael Louis —

▲ BOUGHT

2,000

$233.50

31 Jul 2025

Robertson Andrea —

▼ SOLD

836

$233.64

13 Jun 2025

Weber Brian P —

▼ SOLD

3,035

$227.17

06 Jun 2025

Gerstenberg Eric W —

▼ SOLD

8,076

$225.23

05 Jun 2025

Quirk Alison A. —

▼ SOLD

893

$223.69

05 Jun 2025

Mckim Alan S —

▼ SOLD

58,156

$223.80

04 Jun 2025

Mckim Alan S —

▼ SOLD

41,844

$225.40

28 May 2025

Welch John R. —

▼ SOLD

1,250

$228.51

27 May 2025

Speights Robert —

▼ SOLD

1,022

$228.49

22 May 2025

States Lauren —

▼ SOLD

836

$226.17

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.