West Pharmaceutical Services, Inc.
DE ˙ DB ˙ GB00BLGXWY71
269,50 € ↑3,00 (1,13%)
2026-06-04
AKTIENPREIS
SecurityDE:WPS / West Pharmaceutical Services, Inc.
InstitutionFred Alger Management, Llc
Latest Disclosed Ownership35,942 shares
Latest Disclosed Value $ 9,008,503
Fred Alger Management, Llc reports 25.31% decrease in ownership of WPS / West Pharmaceutical Services, Inc.

On May 15, 2026 - Fred Alger Management, Llc filed a 13F-HR form disclosing ownership of 35,942 shares of West Pharmaceutical Services, Inc. (DE:WPS) valued at $7,673,617 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 48,124 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of -25.31% during the quarter. The current value of the position is $9,686,369 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 West Pharmaceutical Services Equity 955306105 35,942 -12,182 -25.31 9,009 -31.96 0.0252
2026-02-17 2025-12-31 13F West Pharmaceutical Services Equity 955306105 48,124 28,390 143.86 13,241 155.80 0.0519
2025-11-14 2025-09-30 13F West Pharmaceutical Services Equity 955306105 19,734 4,062 25.92 5,177 50.95 0.0201
2025-08-14 2025-06-30 13F West Pharmaceutical Services Equity 955306105 15,672 -394 -2.45 3,429 -4.64 0.0153
2025-05-16 2025-03-31 13F West Pharmaceutical Services Equity 955306105 16,066 -2,556 -13.73 3,597 -41.04 0.0205
2025-02-14 2024-12-31 13F West Pharmaceutical Services Equity 955306105 18,622 4,528 32.13 6,100 44.18 0.0291
2024-11-14 2024-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 14,094 -524 -3.58 4,230 -12.15 0.0205
2024-08-14 2024-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 14,618 -37,150 -71.76 4,815 -76.49 0.0234
2024-05-15 2024-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 51,768 7,580 17.15 20,485 31.66 0.1016
2024-02-14 2023-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 44,188 -54,613 -55.28 15,559 -58.03 0.0839
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 98,801 761 0.78 37,071 -1.14 0.1965
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 98,801 37,071
2023-08-14 2023-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 98,040 28,884 41.77 37,497 56.50 0.1915
2023-05-16 2023-03-31 13F/A-1 WEST PHARMACEUTICAL SERVICES Common 955306105 69,156 53,583 344.08 23,960 553.75 0.1281
2023-05-15 2023-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 69,156 53,583 23,960 0.1188
2023-02-14 2022-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 15,573 -11,143 -41.71 3,665 -44.25 0.0199
2022-11-15 2022-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 26,716 9,378 54.09 6,574 25.41 0.0333
2022-08-15 2022-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 17,338 13,829 394.10 5,242 263.78 0.0245
2022-05-16 2022-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 3,509 -22,527 -86.52 1,441 -88.20 0.0046
2022-02-14 2021-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 26,036 16,875 184.20 12,211 213.99 0.0306
2021-11-15 2021-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 9,161 0 0.00 3,889 18.21 0.0093
2021-08-16 2021-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 9,161 -604 -6.19 3,290 19.55 0.0078
2021-05-17 2021-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 9,765 -343 -3.39 2,752 -3.91 0.0072
2021-02-16 2020-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 10,108 -6 -0.06 2,864 3.02 0.0075
2020-11-13 2020-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 10,114 3,114 44.49 2,780 74.84 0.0081
2020-08-14 2020-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 7,000 6,884 5,934.48 1,590 8,733.33 0.0052
2020-05-19 2020-03-31 13F/A-1 WEST PHARMACEUTICAL SERVICES Common 955306105 116 0 0.00 18 5.88 0.0001
2020-05-15 2020-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 116 0 18 79.1956
2020-02-14 2019-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 116 116 17 0.0001
2019-05-14 2019-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 0 -119 -100.00 0 -100.00
2019-02-14 2018-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 119 0 0.00 12 -20.00 0.0001
2018-11-14 2018-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 119 119 15 0.0001
2018-02-14 2017-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 0 -9,000 -100.00 0 -100.00
2017-11-14 2017-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 9,000 -4,000 -30.77 866 -29.54 0.0041
2017-08-14 2017-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 13,000 6,000 85.71 1,229 115.24 0.0059
2017-05-15 2017-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 7,000 -1,250 -15.15 571 -18.43 0.0028
2017-02-14 2016-12-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 8,250 250 3.12 700 17.45 0.0038
2016-11-14 2016-09-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 8,000 -4,000 -33.33 596 -34.58 0.0031
2016-08-15 2016-06-30 13F WEST PHARMACEUTICAL SERVICES Common 955306105 12,000 1,900 18.81 911 30.14 0.0048
2016-05-16 2016-03-31 13F WEST PHARMACEUTICAL SERVICES Common 955306105 10,100 10,100 700 0.0035
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.