AVANTOR INC AVTR
COM · Common Stock · CUSIP 05352A100 · ISIN US05352A1007
U.S. chemical company
- SectorTechnology
- IndustryLaboratory Analytical Instruments
- HeadquartersRadnor, PA
- Websiteavantorsciences.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($71.3m this quarter). Holder counts are more reliable. Shares outstanding: 681.4m as of 2025-04-21, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $16.31. Options: 15 managers hold calls ($35.7m notional), 17 hold puts ($15.7m).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 440 |
| Q4 2022 | 445 |
| Q1 2023 | 467 |
| Q2 2023 | 444 |
| Q3 2023 | 441 |
| Q4 2023 | 473 |
| Q1 2024 | 498 |
| Q2 2024 | 517 |
| Q3 2024 | 521 |
| Q4 2024 | 495 |
| Q1 2025 | 487 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 215 | 223 |
| Q3 2023 | 229 | 187 |
| Q4 2023 | 228 | 212 |
| Q1 2024 | 261 | 198 |
| Q2 2024 | 260 | 225 |
| Q3 2024 | 277 | 242 |
| Q4 2024 | 209 | 289 |
| Q1 2025 | 251 | 230 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $97.6m | $149.7m | 1.53 |
| Q3 2024 | $78.2m | $273.2m | 3.49 |
| Q4 2024 | $52.6m | $144.8m | 2.76 |
| Q1 2025 | $35.7m | $15.7m | 0.44 |
Biggest buyers
| UBS Group AG | Added | +11.6m |
| 1832 Asset Management L.P. | Added | +8.6m |
| MILLENNIUM MANAGEMENT LLC | New | +5.3m |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +5.0m |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Added | +4.9m |
| Holocene Advisors, LP | New | +2.8m |
| Freestone Grove Partners LP | Added | +2.2m |
| Invesco Ltd. | Added | +1.9m |
| BlackRock, Inc. | Added | +1.8m |
| KBC Group NV | Added | +1.5m |
Biggest sellers
| CANADA PENSION PLAN INVESTMENT BOARD | Reduced | -15.6m |
| Boston Partners | Reduced | -6.4m |
| Durable Capital Partners LP | Sold out | -4.8m |
| FMR LLC | Reduced | -3.7m |
| Standard Investments LLC | Sold out | -2.9m |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -2.0m |
| Pictet Asset Management Holding SA | Reduced | -1.4m |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -1.3m |
| JENNISON ASSOCIATES LLC | Sold out | -1.2m |
| National Pension Service | Reduced | -1.1m |
Biggest calls
| CITADEL ADVISORS LLC | Added | $7.7m477.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $7.4m457.6k shares |
| SIMPLEX TRADING, LLC | Added | $7.1m435.3k shares |
| IMC-Chicago, LLC | Added | $3.2m196.1k shares |
| GROUP ONE TRADING LLC | Added | $2.6m157.4k shares |
| MILLENNIUM MANAGEMENT LLC | New | $2.4m150.0k shares |
| GOLDMAN SACHS GROUP INC | Unchanged | $1.3m80.0k shares |
| CAPITAL FUND MANAGEMENT S.A. | New | $1.1m66.9k shares |
| PEAK6 LLC | Reduced | $1.1m64.8k shares |
| JANE STREET GROUP, LLC | Reduced | $828.3k51.1k shares |
Biggest puts
| JANE STREET GROUP, LLC | Reduced | $4.0m249.4k shares |
| CITADEL ADVISORS LLC | Reduced | $3.1m189.6k shares |
| Caption Management, LLC | New | $1.9m120.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.4m85.1k shares |
| GOLDMAN SACHS GROUP INC | Unchanged | $1.3m80.0k shares |
| PEAK6 LLC | Added | $938.6k57.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $753.0k46.5k shares |
| IMC-Chicago, LLC | Reduced | $752.1k46.4k shares |
| CAPITAL FUND MANAGEMENT S.A. | New | $510.6k31.5k shares |
| SIG BROKERAGE, LP | New | $324.2k20.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| DODGE & COX 13G · institution +2.6 pts · filed 2025-08-13 | 17.2% |
| BlackRock, Inc. 13G · institution filed 2025-10-17 | 8.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.3% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), BARROW HANLEY MEWHINNEY & STRAUSS LLC (4.9%, 2026-02-11), T. Rowe Price Investment Management, Inc. (4.8%, 2025-11-14)
Insider purchases and sales in Q1 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 1 | $31.7k | $31.7k |
| Q3 2023 | 0 | — | 2 | $693.1k | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 3 | $687.5k | $94.4k |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 2 | $361.1k | $272.8k |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 2 | $182.6k | $182.6k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-02-27 | Eck Steven W SVP & Chief Accounting Officer | Sold plan | $17.6k1.0k shares |
| 2025-02-27 | Bramwell James EVP Sales, Customer Excellence | Sold plan | $13.2k774 shares |
| 2025-02-26 | Eck Steven W SVP & Chief Accounting Officer | Sold plan | $86.0k4.9k shares |
| 2025-02-26 | Bramwell James EVP Sales, Customer Excellence | Sold plan | $65.9k3.8k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| Dodge & Cox 0.93% of their portfolio | 100.3m $1.6bn | Added +1.1m |
| BlackRock, Inc. 0.02% of their portfolio | 72.7m $1.2bn | Added +1.8m |
| VANGUARD GROUP INC 0.02% of their portfolio | 65.0m $1.1bn | Added +983.2k |
| T. Rowe Price Investment Management, Inc. 0.45% of their portfolio | 42.0m $680.3m | Added +608.8k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 1.78% of their portfolio | 30.3m $490.5m | Reduced -270.1k |
| STATE STREET CORP 0.02% of their portfolio | 23.6m $382.5m | Added +290.5k |
| JANUS HENDERSON GROUP PLC 0.17% of their portfolio | 18.7m $302.7m | Added +571.1k |
| 1832 Asset Management L.P. 0.56% of their portfolio | 18.1m $293.8m | Added +8.6m |
| UBS Group AG 0.06% of their portfolio | 16.7m $271.2m | Added +11.6m |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.22% of their portfolio | 14.0m $227.5m | Added +4.9m |
| New Mountain Capital, L.L.C. 100.00% of their portfolio | 14.0m $226.9m | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 11.8m $190.8m | Added +564.1k |
| Invesco Ltd. 0.04% of their portfolio | 11.7m $189.2m | Added +1.9m |
| VOYA INVESTMENT MANAGEMENT LLC 0.09% of their portfolio | 10.0m $162.8m | Added +5.0m |
| Clarkston Capital Partners, LLC 3.07% of their portfolio | 9.6m $155.5m | Added +1.4m |
| BESSEMER GROUP INC 0.27% of their portfolio | 9.2m $149.7m | Added +364.0k |
| Robeco Schweiz AG 3.31% of their portfolio | 8.3m $134.4m | Added +676.4k |
| NORGES BANK 0.02% of their portfolio | 7.7m $124.8m | Added +933.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 6.6m $106.7m | Reduced -2.0m |
| MORGAN STANLEY 0.01% of their portfolio | 6.3m $102.4m | Added +390.2k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 6.3m $102.1m | Added +127.6k |
| ALLIANCEBERNSTEIN L.P. 0.04% of their portfolio | 6.3m $101.5m | Added +1.4m |
| CCLA Investment Management 1.68% of their portfolio | 5.8m $94.8m | Added +491.8k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 5.6m $90.2m | Reduced -1.3m |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 0.93% of their portfolio | 5.5m $89.3m | Added +806.4k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.09% of their portfolio | 5.4m $88.3m | Reduced -15.6m |
| MILLENNIUM MANAGEMENT LLC 0.08% of their portfolio | 5.3m $86.0m | New |
| Pictet Asset Management Holding SA 0.09% of their portfolio | 5.2m $83.5m | Reduced -1.4m |
| Bank of New York Mellon Corp 0.02% of their portfolio | 4.8m $77.5m | Reduced -50.4k |
| TrinityBridge Ltd 2.17% of their portfolio | 4.6m $75.3m | Reduced -1.9k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.20% of their portfolio | 4.4m $71.9m | Reduced -315.9k |
| Sound Shore Management Inc /CT/ 2.37% of their portfolio | 4.2m $67.6m | Reduced -509.2k |
| Legal & General Group Plc 0.02% of their portfolio | 4.1m $66.2m | Reduced -27.9k |
| TD Asset Management Inc 0.05% of their portfolio | 3.5m $56.2m | Added +52.2k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 3.4m $54.7m | Added +980.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 3.3m $53.4m | Added +264.6k |
| FMR LLC 0.00% of their portfolio | 3.3m $53.3m | Reduced -3.7m |
| Artemis Investment Management LLP 0.74% of their portfolio | 3.0m $48.0m | Reduced -918.8k |
| BROWN BROTHERS HARRIMAN & CO 0.33% of their portfolio | 2.9m $47.4m | Added +4.0k |
| Holocene Advisors, LP 0.14% of their portfolio | 2.8m $46.2m | New |
| DAVENPORT & Co LLC 0.27% of their portfolio | 2.8m $45.3m | Reduced -44.0k |
| Thrivent Financial for Lutherans 0.09% of their portfolio | 2.6m $42.5m | Reduced -501.5k |
| Freestone Grove Partners LP 0.42% of their portfolio | 2.5m $40.4m | Added +2.2m |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 2.3m $37.7m | Added +567.7k |
| CITIGROUP INC 0.03% of their portfolio | 2.3m $36.7m | Added +1.3m |
| Clearbridge Investments, LLC 0.03% of their portfolio | 2.2m $35.4m | Reduced -16.8k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.25% of their portfolio | 2.2m $35.0m | Reduced -847.2k |
| COUNTRY TRUST BANK 0.88% of their portfolio | 2.2m $35.0m | Added +378.5k |
| BARCLAYS PLC 0.01% of their portfolio | 2.0m $32.0m | Added +714.1k |
| Swiss National Bank 0.02% of their portfolio | 1.9m $31.1m | Reduced -800 |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 1.9m $30.7m | Reduced -31.2k |
| KBC Group NV 0.09% of their portfolio | 1.8m $29.6m | Added +1.5m |
| NEW SOUTH CAPITAL MANAGEMENT INC 1.39% of their portfolio | 1.8m $28.9m | Added +470.5k |
| Perpetual Ltd 0.34% of their portfolio | 1.7m $28.3m | Reduced -22.2k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 1.7m $26.9m | Added +17.2k |
| Amundi 0.01% of their portfolio | 1.6m $25.7m | Reduced -115.3k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 1.6m $25.9m | Added +51.2k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 1.6m $25.4m | Reduced -675.6k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.16% of their portfolio | 1.6m $25.2m | Added +1.1m |
| SEI INVESTMENTS CO 0.03% of their portfolio | 1.5m $25.1m | Added +91.6k |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 1.5m $25.0m | Added +45.5k |
| Stanley Capital Management, LLC 3.18% of their portfolio | 1.5m $24.3m | Added +799.2k |
| WESTWOOD HOLDINGS GROUP INC 0.18% of their portfolio | 1.5m $24.1m | Added +288.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.5m $23.7m | Reduced -46.1k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 1.4m $23.0m | Reduced -152.9k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.25% of their portfolio | 1.4m $22.7m | Reduced -66.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.4m $22.7m | Added +360.1k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 1.4m $22.6m | Reduced -29.2k |
| Woodline Partners LP 0.15% of their portfolio | 1.4m $22.4m | Added +174.4k |
| Nuveen, LLC 0.01% of their portfolio | 1.4m $22.0m | First filing |
| GREAT LAKES ADVISORS, LLC 0.18% of their portfolio | 1.3m $20.4m | Added +56.3k |
| Zuckerman Investment Group, LLC 2.21% of their portfolio | 1.3m $20.6m | Added +166.3k |
| Impax Asset Management Group plc 0.12% of their portfolio | 1.2m $19.9m | Reduced -564.4k |
| MACQUARIE GROUP LTD 0.02% of their portfolio | 1.2m $19.4m | Reduced -241.9k |
| DUDLEY & SHANLEY, INC. 3.04% of their portfolio | 1.2m $19.3m | Added +105.5k |
| LAZARD ASSET MANAGEMENT LLC 0.03% of their portfolio | 1.2m $19.0m | Reduced -4.1k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 1.2m $18.9m | Added +14.9k |
| Connor, Clark & Lunn Investment Management Ltd. 0.08% of their portfolio | 1.1m $17.8m | Added +380.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 1.1m $17.4m | Added +3.5k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 1.1m $17.4m | Added +209.2k |
| NORRIS PERNE & FRENCH LLP/MI 1.17% of their portfolio | 956.6k $15.5m | Added +456.0k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.51% of their portfolio | 955.1k $15.5m | Added +97.6k |
| CANADA LIFE ASSURANCE Co 0.03% of their portfolio | 952.2k $15.5m | Reduced -60.5k |
| Pacific Capital Partners Ltd 9.60% of their portfolio | 936.0k $15.2m | Added +311.0k |
| Blue Door Asset Management, LLC 10.42% of their portfolio | 847.2k $13.7m | Added +347.2k |
| California Public Employees Retirement System 0.01% of their portfolio | 839.2k $13.6m | Reduced -261.7k |
| Retirement Systems of Alabama 0.05% of their portfolio | 828.7k $13.4m | Added +1.2k |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 824.8k $13.2m | Added +610.8k |
| WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD 3.49% of their portfolio | 805.7k $13.1m | Unchanged |
| Walleye Capital LLC 0.14% of their portfolio | 758.7k $12.3m | Added +16.3k |
| MOORE CAPITAL MANAGEMENT, LP 0.41% of their portfolio | 753.8k $12.2m | Added +253.8k |
| Corebridge Financial, Inc. 0.07% of their portfolio | 752.1k $12.2m | Reduced -18.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 682.3k $11.1m | Added +44.1k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.10% of their portfolio | 671.8k $10.9m | Unchanged |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.02% of their portfolio | 632.0k $10.2m | Unchanged |
| REINHART PARTNERS, LLC. 0.36% of their portfolio | 615.7k $10.0m | Added +64.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 611.4k $9.9m | First filing |
| MetLife Investment Management, LLC 0.05% of their portfolio | 581.0k $9.4m | Added +197.3k |
| Olstein Capital Management, L.P. 1.69% of their portfolio | 568.0k $9.2m | Added +212.0k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.01% of their portfolio | 509.0k $8.3m | Added +1.8k |