Avantor, Inc.
US ˙ NYSE ˙ US05352A1007

SecurityAVTR / Avantor, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership16,154 shares
Latest Disclosed Value $ 126,647
Advisory Services Network, LLC ownership in AVTR / Avantor, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 16,154 shares of Avantor, Inc. (US:AVTR) valued at $126,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Avantor, Inc.. The current value of the position is $146,517 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)
2026-05-15 2026-03-31 13F AVANTOR Stock 05352A100 16,154 16,154 127 0.0012
2026-02-17 2025-12-31 13F AVANTOR Stock 05352A100 0 -22,764 -100.00 0 -100.00
2025-11-18 2025-09-30 13F AVANTOR Stock 05352A100 22,764 6,099 36.60 284 27.35 0.0042
2025-08-19 2025-06-30 13F AVANTOR Stock 05352A100 16,665 5,523 49.57 224 23.89 0.0036
2025-05-15 2025-03-31 13F AVANTOR Stock 05352A100 11,142 1,230 12.41 181 -13.46 0.0035
2025-02-13 2024-12-31 13F AVANTOR Stock 05352A100 9,912 9,912 209 0.0039
2024-08-13 2024-06-30 13F AVANTOR Stock 05352A100 0 -8,601 -100.00 0 -100.00
2024-05-06 2024-03-31 13F AVANTOR Stock 05352A100 8,601 -977 -10.20 220 0.46 0.0049
2024-02-09 2023-12-31 13F AVANTOR Stock 05352A100 9,578 9,578 219 0.0053
2023-11-14 2023-09-30 13F AVANTOR Stock 05352A100 0 -25,383 -100.00 0 -100.00
2023-08-09 2023-06-30 13F AVANTOR Stock 05352A100 25,383 908 3.71 521 0.77 0.0139
2023-05-17 2023-03-31 13F AVANTOR Stock 05352A100 24,475 10,394 73.82 517 74.66 0.0143
2023-02-13 2022-12-31 13F AVANTOR Stock 05352A100 14,081 14,081 297 0.0091
2021-11-05 2021-09-30 13F AVANTOR Stock 05352A100 0 -1,974 -100.00 0 -100.00
2021-08-12 2021-06-30 13F AVANTOR Stock 05352A100 1,974 -17,368 -89.79 70 -87.50 0.0022
2021-05-24 2021-03-31 13F AVANTOR Stock 05352A100 19,342 18,593 2,482.38 560 2,566.67 0.0208
2021-02-09 2020-12-31 13F AVANTOR Stock 05352A100 749 231 44.59 21 75.00 0.0008
2020-11-16 2020-09-30 13F AVANTOR Stock 05352A100 518 518 12 0.0006
2020-08-10 2020-06-30 13F AVANTOR Stock 05352A100 0 -117 -100.00 0 -100.00
2020-05-15 2020-03-31 13F AVANTOR Stock 05352A100 117 0 0.00 1 -50.00 0.0001
2020-02-04 2019-12-31 13F AVANTOR Stock 05352A100 117 117 2 0.0001
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.