阿萬托公司
US ˙ NYSE ˙ US05352A1007

SecurityAVTR / Avantor, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership6,098,287 shares
Latest Disclosed Value $ 47,810,584
Morgan Stanley reports 65.09% decrease in ownership of AVTR / Avantor, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 6,098,287 shares of Avantor, Inc. (US:AVTR) valued at $47,810,570 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 17,468,418 shares of Avantor, Inc.. This represents a change in shares of -65.09% during the quarter. The current value of the position is $58,055,692 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AVANTOR COM 05352A100 6,098,287 -11,370,131 -65.09 47,811 -76.12 0.0029
2026-05-27 2025-12-31 13F/A-1 AVANTOR COM 05352A100 17,468,418 11,216,565 179.41 200,188 156.58 0.0120
2026-02-13 2025-12-31 13F AVANTOR COM 05352A100 17,468,418 11,216,565 200,188 0.0120
2026-05-27 2025-09-30 13F/A-1 AVANTOR COM 05352A100 6,251,853 -619,227 -9.01 78,023 -15.64 0.0047
2025-11-14 2025-09-30 13F AVANTOR COM 05352A100 6,251,853 -619,227 78,023 0.0047
2025-08-15 2025-06-30 13F AVANTOR COM 05352A100 6,871,080 553,264 8.76 92,485 -9.69 0.0060
2025-05-15 2025-03-31 13F AVANTOR COM 05352A100 6,317,816 390,204 6.58 102,412 -18.00 0.0073
2025-05-15 2024-12-31 13F/A-1 AVANTOR COM 05352A100 5,927,612 1,648,716 38.53 124,895 12.83 0.0088
2025-02-14 2024-12-31 13F AVANTOR COM 05352A100 5,927,612 1,648,716 124,895 0.0087
2025-05-14 2024-09-30 13F/A-2 AVANTOR COM 05352A100 4,278,896 889,562 26.25 110,695 54.06 0.0080
2025-02-14 2024-09-30 13F/A-1 AVANTOR COM 05352A100 4,278,896 889,562 110,695 0.0080
2024-11-14 2024-09-30 13F AVANTOR COM 05352A100 4,278,896 889,562 110,695 0.0010
2025-05-14 2024-06-30 13F/A-2 AVANTOR COM 05352A100 3,389,334 299,482 9.69 71,854 -9.05 0.0056
2024-10-17 2024-06-30 13F/A-1 AVANTOR COM 05352A100 3,389,334 299,482 71,854 0.0056
2024-08-14 2024-06-30 13F AVANTOR COM 05352A100 3,389,334 299,482 71,854 0.0056
2024-10-17 2024-03-31 13F/A-2 AVANTOR COM 05352A100 3,089,852 -1,155,586 -27.22 79,008 -18.48 0.0063
2024-08-16 2024-03-31 13F/A-1 AVANTOR COM 05352A100 3,089,852 -1,155,586 79,008 0.0063
2024-05-15 2024-03-31 13F AVANTOR COM 05352A100 3,089,852 -1,155,586 79,008 0.0063
2024-08-16 2023-12-31 13F/A-1 AVANTOR COM 05352A100 4,245,438 1,233,916 40.97 96,923 52.68 0.0085
2024-02-13 2023-12-31 13F AVANTOR COM 05352A100 4,245,438 1,233,916 96,923 0.0085
2023-11-15 2023-09-30 13F AVANTOR COM 05352A100 3,011,522 -153,525 -4.85 63,483 -2.35 0.0065
2023-08-14 2023-06-30 13F AVANTOR COM 05352A100 3,165,047 399,748 14.46 65,010 11.21 0.0064
2023-05-15 2023-03-31 13F AVANTOR COM 05352A100 2,765,299 323,256 13.24 58,458 13.51 0.0063
2023-02-14 2022-12-31 13F AVANTOR COM 05352A100 2,442,043 806,373 49.30 51,503 60.65 0.0058
2022-11-14 2022-09-30 13F AVANTOR COM 05352A100 1,635,670 596,195 57.36 32,059 -0.84 0.0044
2022-10-27 2022-06-30 13F/A-1 AVANTOR COM 05352A100 1,039,475 -578,286 -35.75 32,329 -40.91 0.0042
2022-08-15 2022-06-30 13F AVANTOR COM 05352A100 1,039,475 -578,286 32,329 0.0008
2022-10-27 2022-03-31 13F/A-1 AVANTOR COM 05352A100 1,617,761 -178,143 -9.92 54,713 -27.70 0.0074
2022-05-13 2022-03-31 13F AVANTOR COM 05352A100 1,617,761 -178,143 54,713 0.0074
2022-02-14 2021-12-31 13F AVANTOR COM 05352A100 1,795,904 1,220,904 212.33 75,678 221.79 0.0093
2021-11-15 2021-09-30 13F AVANTOR COM 05352A100 575,000 -26,239 -4.36 23,518 10.15 0.0032
2021-08-23 2021-06-30 13F/A-1 AVANTOR COM 05352A100 601,239 21,118 3.64 21,350 27.20 0.0028
2021-08-16 2021-06-30 13F AVANTOR COM 05352A100 601,239 21,118 21,350 0.0006
2021-05-17 2021-03-31 13F AVANTOR COM 05352A100 580,121 -219,551 -27.46 16,784 -25.44 0.0025
2021-02-16 2020-12-31 13F AVANTOR COM 05352A100 799,672 609,403 320.28 22,511 426.08 0.0035
2020-11-13 2020-09-30 13F AVANTOR COM 05352A100 190,269 20,796 12.27 4,279 48.58 0.0008
2020-08-14 2020-06-30 13F AVANTOR COM 05352A100 169,473 138,320 444.00 2,880 640.36 0.0006
2020-05-26 2020-03-31 13F/A-1 AVANTOR COM 05352A100 31,153 14,917 91.88 389 31.86 0.0001
2020-05-15 2020-03-31 13F AVANTOR COM 05352A100 31,153 -87,512 389 29.8833
2020-02-14 2019-12-31 13F AVANTOR COM 05352A100 16,236 -5,218 -24.32 295 -6.35 0.0001
2019-11-14 2019-09-30 13F AVANTOR COM 05352A100 21,454 -649,280 -96.80 315 -97.54 0.0001
2019-08-14 2019-06-30 13F AVANTOR COM 05352A100 670,734 670,734 12,804 0.0034
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.