Avantor, Inc.
DE ˙ DB ˙ US05352A1007
7,62 € ↓ -0,14 (-1,83%)
2026-06-03
DEL PRIS
SecurityDE:AVG / Avantor, Inc.
InstitutionRobeco Schweiz AG
Latest Disclosed Ownership4,189,536 shares
Latest Disclosed Value $ 32,845,962
Robeco Schweiz AG reports 42.46% decrease in ownership of AVG / Avantor, Inc.

On May 7, 2026 - Robeco Schweiz AG filed a 13F-HR form disclosing ownership of 4,189,536 shares of Avantor, Inc. (DE:AVG) valued at $27,441,461 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 7,280,961 shares of Avantor, Inc.. This represents a change in shares of -42.46% during the quarter. The current value of the position is $31,915,885 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F AVANTOR COM 05352A100 4,189,536 -3,091,425 -42.46 32,846 -60.64 0.6946
2026-02-03 2025-12-31 13F AVANTOR COM 05352A100 7,280,961 -639,216 -8.07 83,440 -15.58 1.8695
2025-10-27 2025-09-30 13F AVANTOR COM 05352A100 7,920,177 -807,007 -9.25 98,844 -15.85 2.2221
2025-08-07 2025-06-30 13F AVANTOR COM 05352A100 8,727,184 438,264 5.29 117,468 -12.57 2.7110
2025-04-30 2025-03-31 13F AVANTOR COM 05352A100 8,288,920 676,365 8.88 134,363 -16.23 3.3056
2025-02-05 2024-12-31 13F AVANTOR COM 05352A100 7,612,555 848,814 12.55 160,397 -8.33 3.4271
2024-11-04 2024-09-30 13F AVANTOR COM 05352A100 6,763,741 756,756 12.60 174,978 37.40 3.2784
2024-08-08 2024-06-30 13F AVANTOR COM 05352A100 6,006,985 287,717 5.03 127,348 -12.92 2.4456
2024-04-25 2024-03-31 13F AVANTOR COM 05352A100 5,719,268 -704,405 -10.97 146,242 -0.28 2.5521
2024-02-14 2023-12-31 13F AVANTOR COM 05352A100 6,423,673 -1,730,327 -21.22 146,652 -14.68 2.4636
2023-11-08 2023-09-30 13F AVANTOR COM 05352A100 8,154,000 607,500 8.05 171,886 10.89 2.9057
2023-08-14 2023-06-30 13F AVANTOR COM 05352A100 7,546,500 579,500 8.32 155,005 5.24 2.3089
2023-05-08 2023-03-31 13F AVANTOR COM 05352A100 6,967,000 -177,000 -2.48 147,282 -2.25 2.3799
2023-02-07 2022-12-31 13F AVANTOR COM 05352A100 7,144,000 802,700 12.66 150,667 21.22 2.7521
2022-11-10 2022-09-30 13F AVANTOR COM 05352A100 6,341,300 540,370 9.32 124,289 -31.11 2.4169
2022-08-03 2022-06-30 13F AVANTOR COM 05352A100 5,800,930 181,530 3.23 180,409 -5.07 3.2171
2022-05-13 2022-03-31 13F AVANTOR COM 05352A100 5,619,400 1,067,804 23.46 190,048 -0.92 2.6778
2022-02-08 2021-12-31 13F AVANTOR COM 05352A100 4,551,596 2,098,896 85.57 191,804 91.20 2.4862
2021-10-13 2021-09-30 13F AVANTOR COM 05352A100 2,452,700 2,452,700 100,315 1.1700
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.