AVTR Institutional Ownership & Shareholders
AVANTOR INC (AVTR) is currently held by 451 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $6.95B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Dodge & Cox Stock Fund is currently the largest disclosed institutional shareholder of AVTR tracked by InsiderSet, reporting ownership valued at approximately $1.19B 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 $1.86B, representing an estimated gain of +56.46% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 53% of the total disclosed AVTR value among the investors covered in this analysis. Major shareholders include Dodge & Cox Stock Fund, Blackrock, Inc., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in AVANTOR INC (AVTR).
This page ranks the largest institutional AVTR 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
451
Total Reported Value
$6.95B
Largest Holder
Dodge & Cox Stock Fund
Largest Position
$1.19B
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
78
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 0.62% | 120,020,974 | $1,188,207,643 | $1,859,124,887 | +$670,917,244 | +56.46% |
| Blackrock, Inc. | 0.01% | 70,281,231 | $695,784,194 | $1,088,656,268 | +$392,872,074 | +56.46% | |
| Vanguard Portfolio Management Llc | 0.01% | 31,343,250 | $310,298,175 | $485,506,943 | +$175,208,768 | +56.46% | |
| Vanguard Capital Management Llc | 0.01% | 30,802,835 | $304,948,067 | $477,135,914 | +$172,187,847 | +56.46% | |
| Greenhaven Associates | Edgar Wachenheim III | 2.82% | 24,637,310 | $243,909,369 | $381,631,932 | +$137,722,563 | +56.46% |
| State Street Corp | 0.01% | 21,572,974 | $213,572,443 | $334,165,367 | +$120,592,924 | +56.46% | |
| Dimensional Fund Advisors Lp | 0.04% | 20,412,181 | $202,086,268 | $316,184,684 | +$114,098,416 | +56.46% | |
| Engine Capital Management, Lp | 19.13% | 19,860,830 | $196,622,217 | $307,644,257 | +$111,022,040 | +56.46% | |
| Barrow Hanley Mewhinney & Strauss Llc | 0.59% | 19,735,968 | $195,386,083 | $305,710,144 | +$110,324,061 | +56.46% | |
| New Mountain Capital, L.L.C. | 100.00% | 14,000,000 | $138,600,000 | $216,860,000 | +$78,260,000 | +56.46% | |
| Invesco Ltd. | 0.01% | 13,885,360 | $137,465,065 | $215,084,226 | +$77,619,161 | +56.46% | |
| Geode Capital Management, Llc | 0.01% | 13,180,567 | $130,519,321 | $204,166,983 | +$73,647,662 | +56.43% | |
| Marshall Wace, Llp | 0.11% | 13,130,158 | $129,988,565 | $203,386,147 | +$73,397,582 | +56.46% | |
| Aqr Capital Management Llc | 0.04% | 11,627,566 | $115,112,902 | $180,110,997 | +$64,998,095 | +56.46% | |
| Bank Of America Corp | 0.01% | 10,989,344 | $108,794,506 | $170,224,939 | +$61,430,433 | +56.46% | |
| Earnest Partners Llc | 0.38% | 10,748,525 | $106,410,397 | $166,494,652 | +$60,084,255 | +56.46% | |
| London Co Of Virginia | 0.59% | 10,485,960 | $103,811,008 | $162,427,520 | +$58,616,512 | +56.46% | |
| Fuller & Thaler Asset Management, Inc. | 0.28% | 10,256,345 | $101,537,816 | $158,870,784 | +$57,332,968 | +56.46% | |
| D. E. Shaw & Co., Inc. | 0.06% | 9,571,523 | $94,758,077 | $148,262,891 | +$53,504,814 | +56.46% | |
| First Pacific Advisors, Lp | 1.00% | 8,190,740 | $81,088,326 | $126,874,563 | +$45,786,237 | +56.46% | |
| Sei Investments Co | 0.07% | 7,947,198 | $78,677,367 | $123,102,097 | +$44,424,730 | +56.46% | |
| Fmr Llc | 0.00% | 7,845,462 | $77,670,074 | $121,526,206 | +$43,856,132 | +56.46% | |
| Gendell Jeffrey L | 0.68% | 7,607,270 | $75,311,973 | $117,836,612 | +$42,524,639 | +56.46% | |
| Vaughan Nelson Investment Management, L.P. | 0.65% | 7,392,825 | $73,188,967 | $114,514,859 | +$41,325,892 | +56.46% | |
| Clarkston Capital Partners, Llc | 5.68% | 6,789,314 | $67,214,209 | $105,166,474 | +$37,952,265 | +56.46% | |
| Morgan Stanley | 0.00% | 6,758,161 | $66,905,804 | $104,683,914 | +$37,778,110 | +56.46% | |
| Goldman Sachs Group Inc | 0.01% | 6,204,341 | $61,422,976 | $96,105,242 | +$34,682,266 | +56.46% | |
| Norges Bank | 0.01% | 6,091,712 | $60,307,949 | $94,360,619 | +$34,052,670 | +56.46% | |
| Charles Schwab Investment Management Inc | 0.01% | 5,821,005 | $57,627,950 | $90,167,367 | +$32,539,417 | +56.46% | |
| Northern Trust Corp | 0.01% | 5,732,678 | $56,753,512 | $88,799,182 | +$32,045,670 | +56.46% | |
| Freestone Grove Partners Lp | 0.37% | 5,714,884 | $56,577,352 | $88,523,553 | +$31,946,201 | +56.46% | |
| Ubs Group Ag | 0.01% | 5,672,297 | $56,155,742 | $87,863,881 | +$31,708,139 | +56.46% | |
| Ameriprise Financial Inc | 0.01% | 5,524,942 | $54,696,928 | $85,581,352 | +$30,884,424 | +56.46% | |
| Natixis Advisors, Llc | 0.06% | 4,946,488 | $48,970,000 | $76,621,099 | +$27,651,099 | +56.47% | |
| Yacktman Asset Management | Donald Yacktman | 0.58% | 4,770,000 | $47,223,000 | $73,887,300 | +$26,664,300 | +56.46% |
| Longleaf Partners | Mason Hawkins | 2.44% | 4,725,478 | $46,782,232 | $73,197,654 | +$26,415,422 | +56.46% |
| Brickwood Asset Management Llp | 32.70% | 4,597,519 | $45,515,438 | $71,215,569 | +$25,700,131 | +56.46% | |
| Vanguard Fiduciary Trust Co | 0.01% | 4,322,245 | $42,790,226 | $66,951,575 | +$24,161,349 | +56.46% | |
| Jones Financial Companies Lllp | 0.02% | 4,120,981 | $42,363,659 | $63,833,996 | +$21,470,337 | +50.68% | |
| Bank Of New York Mellon Corp | 0.01% | 4,121,222 | $40,800,098 | $63,837,729 | +$23,037,631 | +56.46% | |
| Royce & Associates Lp | 0.29% | 3,676,084 | $36,393,232 | $56,942,541 | +$20,549,309 | +56.46% | |
| Frontier Capital Management Co Llc | 0.32% | 3,506,970 | $34,719,001 | $54,322,965 | +$19,603,964 | +56.46% | |
| Private Management Group Inc | 0.81% | 3,097,234 | $30,662,617 | $47,976,155 | +$17,313,538 | +56.46% | |
| Voss Capital, Lp | 1.31% | 2,650,000 | $26,235,000 | $41,048,500 | +$14,813,500 | +56.46% | |
| Prescott General Partners Llc | 1.32% | 2,600,000 | $25,740,000 | $40,274,000 | +$14,534,000 | +56.46% | |
| Wedge Capital Management L L P/Nc | 0.44% | 1,685,513 | $25,366,971 | $26,108,596 | +$741,625 | +2.92% | |
| Gotham Asset Management, Llc | 0.06% | 2,516,444 | $24,912,796 | $38,979,718 | +$14,066,922 | +56.46% | |
| Quantinno Capital Management Lp | 0.03% | 2,442,138 | $24,177,175 | $37,828,718 | +$13,651,543 | +56.46% | |
| Loews Corp | 0.17% | 2,200,000 | $21,780,000 | $34,078,000 | +$12,298,000 | +56.46% | |
| Western Standard Llc | 7.07% | 2,109,984 | $20,888,842 | $32,683,652 | +$11,794,810 | +56.46% |
Frequently asked questions about AVTR
Who are the largest institutional holders of AVTR?
The largest institutional holders of AVTR reported in the latest SEC Form 13F filings include Dodge & Cox Stock Fund, Blackrock, Inc., Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and Greenhaven Associates. InsiderSet ranks institutional holders by their latest reported AVTR position.
What is AVTR institutional ownership?
This page tracks AVTR positions reported by institutional investment managers through SEC Form 13F. AVANTOR INC (AVTR) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own AVTR?
InsiderSet currently tracks 451 institutional managers reporting AVTR 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 AVTR shareholders.
How much AVTR stock do institutions own?
Institutional investment managers disclosed approximately $6.95B in AVTR holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was AVTR institutional ownership last updated?
The latest AVTR 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 AVTR 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 AVTR position after the reporting date.
Are institutions buying or selling AVTR?
Institutional buying and selling can be analyzed by comparing AVTR positions across consecutive 13F reporting periods. InsiderSet's AVTR Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View AVTR ownership changes.
How has AVTR institutional ownership changed over time?
InsiderSet tracks AVTR institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.