CLH Institutional Ownership & Shareholders
CLEAN HARBORS INC (CLH) is currently held by 656 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $14.89B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CLH tracked by InsiderSet, reporting ownership valued at approximately $1.52B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.53B, representing an estimated gain of +1.13% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 46% of the total disclosed CLH value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wellington Management Group Llp, Fmr Llc, and several other long-term asset managers with concentrated positions in CLEAN HARBORS INC (CLH).
This page ranks the largest institutional CLH shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
656
Total Reported Value
$14.89B
Largest Holder
Blackrock, Inc.
Largest Position
$1.52B
Insider Transactions (90d)
1
Latest Filing Quarter
Q2 2026
New Institutional Positions
58
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 5,076,220 | $1,516,520,650 | $1,533,627,586 | +$17,106,936 | +1.13% | |
| Wellington Management Group Llp | 0.16% | 3,155,233 | $942,625,861 | $953,258,994 | +$10,633,133 | +1.13% | |
| Fmr Llc | 0.04% | 3,002,654 | $897,042,939 | $907,161,826 | +$10,118,887 | +1.13% | |
| Janus Henderson Group Plc | 0.33% | 2,355,394 | $675,367,739 | $711,611,635 | +$36,243,896 | +5.37% | |
| Vanguard Capital Management Llc | 0.01% | 2,182,972 | $652,162,885 | $659,519,501 | +$7,356,616 | +1.13% | |
| Vanguard Portfolio Management Llc | 0.03% | 1,983,336 | $592,521,630 | $599,205,472 | +$6,683,842 | +1.13% | |
| State Street Corp | 0.01% | 1,582,004 | $472,623,695 | $477,955,048 | +$5,331,353 | +1.13% | |
| D1 Capital Partners L.P. | 1.13% | 1,315,501 | $393,005,924 | $397,439,162 | +$4,433,238 | +1.13% | |
| Geode Capital Management, Llc | 0.02% | 1,129,240 | $337,431,069 | $341,165,989 | +$3,734,920 | +1.11% | |
| Clearbridge Investments, Llc | 0.28% | 1,126,744 | $336,614,659 | $340,411,897 | +$3,797,238 | +1.13% | |
| First Trust Advisors Lp | 0.17% | 993,170 | $296,709,537 | $300,056,520 | +$3,346,983 | +1.13% | |
| Snyder Capital Management L P | 4.76% | 922,182 | $275,501,872 | $278,609,626 | +$3,107,754 | +1.13% | |
| Goldman Sachs Group Inc | 0.03% | 900,225 | $268,942,164 | $271,975,977 | +$3,033,813 | +1.13% | |
| Durable Capital Partners | Henry Ellenbogen | 2.59% | 892,405 | $266,605,994 | $269,613,399 | +$3,007,405 | +1.13% |
| Fil Ltd | 0.19% | 877,433 | $262,133,109 | $265,090,058 | +$2,956,949 | +1.13% | |
| Bessemer Group Inc | 0.31% | 763,028 | $227,954,000 | $230,526,019 | +$2,572,019 | +1.13% | |
| Select Equity Group, L.P. | 1.15% | 728,374 | $217,601,732 | $220,056,353 | +$2,454,621 | +1.13% | |
| Norges Bank | 0.02% | 632,096 | $188,838,680 | $190,968,844 | +$2,130,164 | +1.13% | |
| Pictet Asset Management Holding Sa | 0.17% | 608,808 | $181,887,717 | $183,933,073 | +$2,045,356 | +1.12% | |
| Dimensional Fund Advisors Lp | 0.03% | 606,181 | $181,101,941 | $183,139,404 | +$2,037,463 | +1.13% | |
| Nordea Investment Management Ab | 0.13% | 526,178 | $157,148,322 | $158,968,897 | +$1,820,575 | +1.16% | |
| Hood River Capital Management Llc | 1.08% | 498,747 | $149,000,666 | $150,681,444 | +$1,680,778 | +1.13% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.03% | 517,561 | $148,400,267 | $156,365,529 | +$7,965,262 | +5.37% | |
| Aqr Capital Management Llc | 0.05% | 478,075 | $142,824,964 | $144,436,019 | +$1,611,055 | +1.13% | |
| Bank Of America Corp | 0.01% | 477,994 | $142,800,709 | $144,411,547 | +$1,610,838 | +1.13% | |
| Charles Schwab Investment Management Inc | 0.02% | 473,991 | $141,604,812 | $143,202,161 | +$1,597,349 | +1.13% | |
| Northern Trust Corp | 0.02% | 455,688 | $136,136,790 | $137,672,459 | +$1,535,669 | +1.13% | |
| Invesco Ltd. | 0.01% | 450,801 | $134,676,800 | $136,195,998 | +$1,519,198 | +1.13% | |
| T. Rowe Price Investment Management, Inc. | 0.09% | 441,280 | $131,833,000 | $133,319,514 | +$1,486,514 | +1.13% | |
| Two Sigma Investments, Lp | 0.10% | 423,106 | $126,402,918 | $127,828,785 | +$1,425,867 | +1.13% | |
| William Blair Investment Management, Llc | 0.38% | 419,210 | $125,238,988 | $126,651,725 | +$1,412,737 | +1.13% | |
| Bank Of New York Mellon Corp | 0.02% | 354,685 | $105,962,056 | $107,157,432 | +$1,195,376 | +1.13% | |
| Quantinno Capital Management Lp | 0.12% | 342,589 | $102,348,586 | $103,502,989 | +$1,154,403 | +1.13% | |
| Vaughan Nelson Investment Management, L.P. | 0.90% | 342,420 | $102,297,975 | $103,451,930 | +$1,153,955 | +1.13% | |
| Citadel Advisors Llc | 0.05% | 314,347 | $93,911,167 | $94,970,516 | +$1,059,349 | +1.13% | |
| Vanguard Fiduciary Trust Co | 0.02% | 314,047 | $93,821,541 | $94,879,880 | +$1,058,339 | +1.13% | |
| Steadfast Capital Management Lp | 2.77% | 302,091 | $90,249,686 | $91,267,733 | +$1,018,047 | +1.13% | |
| Davenport & Co Llc | 0.45% | 278,329 | $86,550,565 | $84,088,757 | -$2,461,808 | -2.84% | |
| Morgan Stanley | 0.00% | 280,859 | $83,907,447 | $84,853,121 | +$945,674 | +1.13% | |
| M.D. Sass, Llc | 5.35% | 270,507 | $80,813,966 | $81,725,575 | +$911,609 | +1.13% | |
| Westfield Capital Management Co Lp | 0.26% | 268,348 | $80,168,965 | $81,073,298 | +$904,333 | +1.13% | |
| Jane Street Group, Llc | 0.05% | 258,710 | $77,289,613 | $78,161,465 | +$871,852 | +1.13% | |
| Qube Research & Technologies Ltd | 0.08% | 247,078 | $73,814,553 | $74,647,205 | +$832,652 | +1.13% | |
| Silvercrest Asset Management Group Llc | 0.46% | 234,409 | $70,030,134 | $70,819,647 | +$789,513 | +1.13% | |
| Jpmorgan Chase & Co | 0.00% | 209,377 | $63,472,071 | $63,256,979 | -$215,092 | -0.34% | |
| Holocene Advisors, Lp | 0.14% | 211,217 | $63,101,079 | $63,812,880 | +$711,801 | +1.13% | |
| Assenagon Asset Management S.A. | 0.05% | 168,142 | $52,162,693 | $50,799,061 | -$1,363,632 | -2.61% | |
| Raymond James Financial Inc | 0.01% | 167,826 | $50,138,028 | $50,703,591 | +$565,563 | +1.13% | |
| 12Th Street Asset Management Company, Llc | 7.09% | 166,534 | $49,752,025 | $50,313,252 | +$561,227 | +1.13% | |
| Federated Hermes, Inc. | 0.07% | 161,436 | $48,229,006 | $48,773,044 | +$544,038 | +1.13% |
Frequently asked questions about CLH
Who are the largest institutional holders of CLH?
The largest institutional holders of CLH reported in the latest SEC Form 13F filings include Blackrock, Inc., Wellington Management Group Llp, Fmr Llc, Janus Henderson Group Plc, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported CLH position.
What is CLH institutional ownership?
This page tracks CLH positions reported by institutional investment managers through SEC Form 13F. CLEAN HARBORS INC (CLH) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CLH?
InsiderSet currently tracks 656 institutional managers reporting CLH holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CLH shareholders.
How much CLH stock do institutions own?
Institutional investment managers disclosed approximately $14.89B in CLH holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CLH institutional ownership last updated?
The latest CLH institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CLH holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CLH position after the reporting date.
Are institutions buying or selling CLH?
Institutional buying and selling can be analyzed by comparing CLH positions across consecutive 13F reporting periods. InsiderSet's CLH Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CLH ownership changes.
How has CLH institutional ownership changed over time?
InsiderSet tracks CLH institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.