CLEAN HARBORS INC (CLH) Institutional Shareholders
CLEAN HARBORS INC (CLH) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $13.21B in CLH holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CLH tracked by InsiderSet, reporting ownership valued at approximately $1.38B in its March 31, 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 $1.50B, representing an estimated gain of +9.12% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed CLH value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wellington Management Group Llp, Janus Henderson Group Plc, 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
618
Total Reported Value
$13.21B
Largest Holder
Blackrock, Inc.
Largest Position
$1.38B
Insider Transactions (90d)
20
Latest Filing Quarter
Q2 2026
New Institutional Positions
74
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% | 4,802,492 | $1,377,018,670 | $1,502,603,697 | +$125,585,027 | +9.12% | |
| Wellington Management Group Llp | 0.19% | 3,577,034 | $1,025,642,960 | $1,119,182,398 | +$93,539,438 | +9.12% | |
| Janus Henderson Group Plc | 0.33% | 2,355,394 | $675,367,739 | $736,955,675 | +$61,587,936 | +9.12% | |
| Vanguard Capital Management Llc | 0.02% | 2,169,364 | $622,021,740 | $678,750,608 | +$56,728,868 | +9.12% | |
| Fmr Llc | 0.03% | 2,101,179 | $602,471,093 | $657,416,886 | +$54,945,793 | +9.12% | |
| Vanguard Portfolio Management Llc | 0.03% | 1,962,951 | $562,836,940 | $614,168,109 | +$51,331,169 | +9.12% | |
| Lone Pine Capital | Stephen Mandel | 4.01% | 1,754,950 | $503,196,814 | $549,088,756 | +$45,891,942 | +9.12% |
| State Street Corp | 0.02% | 1,537,297 | $440,789,169 | $480,989,485 | +$40,200,316 | +9.12% | |
| D1 Capital Partners L.P. | 3.42% | 1,338,281 | $383,725,311 | $418,721,359 | +$34,996,048 | +9.12% | |
| Clearbridge Investments, Llc | 0.30% | 1,202,777 | $344,872,163 | $376,324,868 | +$31,452,705 | +9.12% | |
| Select Equity Group, L.P. | 1.73% | 1,131,602 | $324,464,241 | $354,055,634 | +$29,591,393 | +9.12% | |
| Durable Capital Partners | Henry Ellenbogen | 3.10% | 1,050,973 | $301,345,488 | $328,828,432 | +$27,482,944 | +9.12% |
| Geode Capital Management, Llc | 0.02% | 945,892 | $271,278,985 | $295,950,689 | +$24,671,704 | +9.09% | |
| Snyder Capital Management L P | 5.17% | 929,327 | $266,465,931 | $290,767,832 | +$24,301,901 | +9.12% | |
| Goldman Sachs Group Inc | 0.04% | 929,077 | $266,394,248 | $290,689,612 | +$24,295,364 | +9.12% | |
| First Trust Advisors Lp | 0.16% | 778,441 | $223,202,387 | $243,558,620 | +$20,356,233 | +9.12% | |
| Two Sigma Investments, Lp | 0.17% | 724,028 | $207,600,548 | $226,533,881 | +$18,933,333 | +9.12% | |
| Pictet Asset Management Holding Sa | 0.17% | 608,808 | $181,887,717 | $190,483,847 | +$8,596,130 | +4.73% | |
| Dimensional Fund Advisors Lp | 0.04% | 608,709 | $174,515,664 | $190,452,872 | +$15,937,208 | +9.13% | |
| Nordea Investment Management Ab | 0.15% | 568,408 | $159,296,343 | $177,843,495 | +$18,547,152 | +11.64% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.03% | 517,561 | $148,400,267 | $161,934,486 | +$13,534,219 | +9.12% | |
| Fil Ltd | 0.11% | 509,679 | $146,140,259 | $159,468,366 | +$13,328,107 | +9.12% | |
| Charles Schwab Investment Management Inc | 0.02% | 474,647 | $136,095,534 | $148,507,553 | +$12,412,019 | +9.12% | |
| Northern Trust Corp | 0.02% | 448,670 | $128,647,149 | $140,379,870 | +$11,732,721 | +9.12% | |
| William Blair Investment Management, Llc | 0.42% | 443,098 | $127,049,490 | $138,636,502 | +$11,587,012 | +9.12% | |
| Invesco Ltd. | 0.02% | 421,460 | $120,845,226 | $131,866,405 | +$11,021,179 | +9.12% | |
| Bank Of New York Mellon Corp | 0.02% | 382,228 | $109,596,280 | $119,591,497 | +$9,995,217 | +9.12% | |
| Quantinno Capital Management Lp | 0.18% | 380,945 | $109,228,477 | $119,190,072 | +$9,961,595 | +9.12% | |
| Vaughan Nelson Investment Management, L.P. | 0.90% | 342,420 | $102,297,975 | $107,136,370 | +$4,838,395 | +4.73% | |
| Bank Of America Corp | 0.01% | 311,907 | $89,433,095 | $97,589,462 | +$8,156,367 | +9.12% | |
| Vanguard Fiduciary Trust Co | 0.02% | 309,653 | $88,786,805 | $96,884,231 | +$8,097,426 | +9.12% | |
| Davenport & Co Llc | 0.45% | 293,384 | $87,805,558 | $91,793,986 | +$3,988,428 | +4.54% | |
| Morgan Stanley | 0.01% | 290,329 | $83,246,593 | $90,838,138 | +$7,591,545 | +9.12% | |
| Westfield Capital Management Co Lp | 0.31% | 261,092 | $74,862,909 | $81,690,465 | +$6,827,556 | +9.12% | |
| M.D. Sass, Llc | 5.49% | 252,540 | $72,410,794 | $79,014,715 | +$6,603,921 | +9.12% | |
| Silvercrest Asset Management Group Llc | 0.50% | 240,299 | $68,901,330 | $75,184,751 | +$6,283,421 | +9.12% | |
| Ubs Group Ag | 0.01% | 226,301 | $64,887,286 | $70,805,057 | +$5,917,771 | +9.12% | |
| 12Th Street Asset Management Company, Llc | 9.60% | 204,716 | $58,698,211 | $64,051,542 | +$5,353,331 | +9.12% | |
| Neuberger Berman Group Llc | 0.04% | 194,039 | $55,584,266 | $60,710,922 | +$5,126,656 | +9.22% | |
| Aqr Capital Management Llc | 0.02% | 180,668 | $50,587,093 | $56,527,404 | +$5,940,311 | +11.74% | |
| Raymond James Financial Inc | 0.02% | 173,700 | $49,805,045 | $54,347,256 | +$4,542,211 | +9.12% | |
| Federated Hermes, Inc. | 0.08% | 169,284 | $48,538,802 | $52,965,578 | +$4,426,776 | +9.12% | |
| Op Asset Management Ltd | 0.47% | 146,009 | $43,620,189 | $45,683,296 | +$2,063,107 | +4.73% | |
| Oberweis Asset Management Inc/ | 1.22% | 144,355 | $41,390,909 | $45,165,792 | +$3,774,883 | +9.12% | |
| Leeward Investments, Llc - Ma | 1.84% | 135,566 | $40,500,357 | $42,415,890 | +$1,915,533 | +4.73% | |
| Vontobel Holding Ltd. | 0.14% | 138,096 | $39,596,266 | $43,207,476 | +$3,611,210 | +9.12% | |
| Grantham, Mayo, Van Otterloo & Co. Llc | 0.10% | 135,593 | $38,878,581 | $42,424,338 | +$3,545,757 | +9.12% | |
| Gotham Asset Management, Llc | 0.12% | 134,631 | $38,602,747 | $42,123,347 | +$3,520,600 | +9.12% | |
| Rhumbline Advisers | 0.03% | 133,743 | $38,348,074 | $41,845,510 | +$3,497,436 | +9.12% | |
| Jane Street Group, Llc | 0.04% | 132,797 | $38,076,884 | $41,549,525 | +$3,472,641 | +9.12% |
Frequently asked questions about CLH
Who owns the most CLH stock?
The largest holders of CLH are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CLEAN HARBORS INC (CLH).
Is CLH widely held by superinvestors?
Many widely followed stocks like CLH appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CLH is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.