Clean Harbors Ownership | Who Owns Clean Harbors?


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Clean Harbors Ownership Summary


Clean Harbors is owned by 44.30% institutional investors, 4.96% insiders, and 50.73% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.03% of CLH shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.21% of its assets in Clean Harbors shares.

CLH Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockClean Harbors44.30%4.96%50.73%
SectorIndustrials Stocks 49.61%15.69%34.70%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de4.80M9.03%$1.38B
Blackrock4.54M8.43%$1.03B
Vanguard group4.49M8.39%$1.05B
Wellington management group llp3.58M6.73%$1.03B
Janus henderson group2.36M4.43%$675.37M
Fmr2.10M3.95%$602.47M
Lone pine capital1.75M3.30%$503.20M
State street1.54M2.89%$440.79M
D1 capital partners1.34M2.52%$383.73M
Pictet asset management sa1.24M2.34%$356.09M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Consolidated press2.20K100.00%$630.81K
Visualize group lp96.30K11.37%$27.61M
Charter oak advisors lp63.21K10.99%$18.13M
12th street asset management company204.72K9.60%$58.70M
Gallo partners, lp10.05K5.51%$2.88M
M.d. sass252.54K5.49%$72.41M
Snyder capital management l p929.33K5.17%$266.47M
Lansing management lp23.51K4.48%$6.74M
Shannon river fund management115.87K4.33%$26.91M
Bullseye asset management25.72K4.27%$7.38M

Top Buyers

HolderShares% AssetsChange
Fmr2.10M0.03%1.73M
Goldman sachs group929.08K0.03%669.62K
Norges bank649.08K0.02%649.08K
T. rowe price investment management477.29K0.09%443.21K
Lone pine capital1.75M4.01%376.82K

Top Sellers

HolderShares% AssetsChange
Wellington management group llp3.58M0.19%-1.61M
D1 capital partners1.34M3.42%-1.44M
Pictet asset management sa1.24M0.38%-643.59K
Palestra capital management---569.99K
Zurich insurance group ltd/fi---520.91K

New Positions

HolderShares% AssetsChangeValue
Norges bank649.08K0.02%649.08K$152.20M
Vanguard fiduciary trust309.65K0.02%309.65K$88.79M
Mirova130.68K1.52%130.68K$37.47M
Shannon river fund management115.87K4.33%115.87K$26.91M
Visualize group lp96.30K11.37%96.30K$27.61M

Sold Out

HolderChange
Dunhill financial-1.00
Newsquare capital-1.00
Tfo-tdc-1.00
Stephens consulting-2.00
Rakuten securities-2.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 2026420-26.96%23,564,664-54.21%440.48%203-16.80%133-40.89%
Dec 31, 2025424-26.26%30,005,021-39.54%560.65%162-34.41%171-15.35%
Sep 30, 2025549-5.34%47,325,852-3.44%881.06%235-2.89%197-12.44%
Jun 30, 2025571-48,854,6851.65%911.14%242-12.95%2188.46%
Mar 31, 2025564-3.09%47,753,168-2.07%881.09%2712.26%201-3.37%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Mid-Cap ETF1.70M3.21%-848.00
Vanguard Total Stock Mkt Idx Inv1.51M2.84%3.62K
Vanguard US Total Market Shares ETF1.54M2.84%1.19K
Janus Inst Mid Cap Growth CF1.44M2.73%-
Janus Henderson Enterprise D1.44M2.71%-
Janus Henderson Mid Cap Growth MA1.30M2.46%1.30M
Fidelity Contrafund1.12M2.12%680.50K
Vanguard Small Cap Index1.10M2.06%-2.36K
AF Global Equity (AFRIS)963.30K1.78%963.30K
First Trust RBA Amer Indl RenaisTM ETF868.23K1.64%3.26K

Recent Insider Transactions


DateNameRoleActivityValue
May 26, 2026States Lauren-Sell$225.80K
May 11, 2026Polito Karyn-Buy$135.76K
Mar 18, 2026GERSTENBERG ERIC W CO-CEOSell$293.00K
Mar 18, 2026Reed Marcy L.-Sell$240.72K
Mar 17, 2026Weber Brian P EVP (CHESI)Sell$1.37M

Insider Transactions Trends


DateBuySell
2026 Q211
2026 Q1-9
2025 Q4-1
2025 Q311
2025 Q2-8

CLH Ownership FAQ


Who owns the most shares of Clean Harbors?

Clean Harbors’s largest shareholders are Blackrock funding, inc. /de (4.8M shares, 9.03%), Blackrock (4.54M shares, 8.43%), and Vanguard group (4.49M shares, 8.39%). Together, they hold 25.84% of Clean Harbors’s total shares outstanding.

Does Blackrock own Clean Harbors?

Yes, BlackRock owns 8.43% of Clean Harbors, totaling 4.54M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 1.03B$. In the last quarter, BlackRock increased its holdings by 159.32K shares, a 3.63% change.

Who is Clean Harbors’s biggest shareholder by percentage of total assets invested?

Consolidated press is Clean Harbors’s biggest shareholder by percentage of total assets invested, with 100.00% of its assets in 2.2K Clean Harbors shares, valued at 630.81K$.

Who is the top mutual fund holder of Clean Harbors shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Clean Harbors shares, with 3.21% of its total shares outstanding invested in 1.7M Clean Harbors shares.

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