西方製藥服務公司
MX ˙ BMV ˙ US9553061055
SecurityMX:WST / West Pharmaceutical Services, Inc.
InstitutionStifel Financial Corp
Latest Disclosed Ownership36,370 shares
Latest Disclosed Value $ 9,115,833
Stifel Financial Corp reports 4.13% increase in ownership of WST / West Pharmaceutical Services, Inc.

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 36,370 shares of West Pharmaceutical Services, Inc. (MX:WST) valued at $9,115,833 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 34,926 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of 4.13% during the quarter.

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)
2026-05-12 2026-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 36,370 1,444 4.13 9,116 -5.14 0.0020
2026-02-13 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 34,926 -3,467 -9.03 9,610 -4.59 0.0086
2025-11-12 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 38,393 -141 -0.37 10,072 19.45 0.0092
2025-08-14 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 38,534 -3,771 -8.91 8,431 -10.99 0.0082
2025-05-14 2025-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 42,305 951 2.30 9,472 -30.08 0.0101
2025-02-13 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 41,354 131 0.32 13,547 9.48 0.0141
2024-11-14 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 41,223 -1,925 -4.46 12,374 -12.94 0.0130
2024-08-13 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 43,148 -663 -1.51 14,213 -18.02 0.0160
2024-05-14 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 43,811 -2,217 -4.82 17,337 6.97 0.0198
2024-02-12 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 46,028 -940 -2.00 16,208 -8.03 0.0204
2023-11-13 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 46,968 809 1.75 17,624 -0.18 0.0248
2023-08-14 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 46,159 126 0.27 17,656 10.69 0.0242
2023-05-12 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 46,033 -3,701 -7.44 15,950 36.27 0.0229
2023-02-13 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 49,734 -16,864 -25.32 11,706 -28.58 0.0176
2022-11-14 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 66,598 -1,590 -2.33 16,390 -20.51 0.0268
2022-08-15 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 68,188 -12,003 -14.97 20,620 -37.40 0.0323
2022-05-13 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 80,191 -126 -0.16 32,938 -12.56 0.0449
2022-02-14 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 80,317 597 0.75 37,671 11.30 0.0498
2021-11-15 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 79,720 -137 -0.17 33,847 18.02 0.0496
2021-08-13 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 79,857 -60 -0.08 28,680 27.35 0.0429
2021-05-14 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 79,917 11,542 16.88 22,520 16.24 0.0371
2021-02-12 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 68,375 4,374 6.83 19,373 10.11 0.0346
2020-11-16 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 64,001 11,671 22.30 17,595 47.99 0.0362
2020-08-14 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 52,330 10,022 23.69 11,889 83.87 0.0273
2020-05-14 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 42,308 1,530 3.75 6,466 5.12 0.0179
2020-02-13 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 40,778 1,055 2.66 6,151 8.52 0.0128
2019-11-19 2019-09-30 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 39,723 4,568 12.99 5,668 27.77 0.0145
2019-11-13 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 39,723 4,568 5,668 3,177.1981
2019-08-14 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 35,155 5,507 18.57 4,436 36.53 0.0114
2019-05-14 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 29,648 5,872 24.70 3,249 39.68 0.0092
2019-02-13 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 23,776 2,985 14.36 2,326 -9.28 0.0075
2018-11-13 2018-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 20,791 5,909 39.71 2,564 75.02 0.0073
2018-08-14 2018-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,882 2,458 19.78 1,465 32.58 0.0045
2018-05-11 2018-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 12,424 -14,520 -53.89 1,105 -58.41 0.0035
2018-02-14 2017-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 26,944 4,674 20.99 2,657 24.04 0.0084
2017-11-13 2017-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 22,270 2,047 10.12 2,142 12.50 0.0074
2017-08-14 2017-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 20,223 6,213 44.35 1,904 66.73 0.0071
2017-05-10 2017-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 14,010 -71,621 -83.64 1,142 -84.25 0.0044
2017-02-16 2016-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 85,631 -18,955 -18.12 7,249 -6.86 0.0308
2016-11-15 2016-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 104,586 -4,834 -4.42 7,783 -6.25 0.0350
2016-08-17 2016-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 109,420 4,670 4.46 8,302 14.37 0.0384
2016-05-16 2016-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 104,750 20,616 24.50 7,259 43.32 0.0387
2016-03-21 2015-12-31 13F/A-2 WEST PHARMACEUTICAL SVSC COM 955306105 84,134 10,867 14.83 5,065 27.74 0.0264
2016-02-26 2015-12-31 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 53,921 -30,213 3,621 0.0189
2016-02-16 2015-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 53,921 3,912
2015-11-16 2015-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 73,267 25,447 53.21 3,965 42.78 0.0223
2015-08-17 2015-06-30 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 47,820 4,886 11.38 2,777 7.43 0.0144
2015-08-17 2015-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 47,785 2,775
2015-05-14 2015-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 42,934 -347 -0.80 2,585 12.20 0.0141
2015-02-13 2014-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 43,281 6,322 17.11 2,304 39.30 0.0128
2014-11-13 2014-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 36,959 -259 -0.70 1,654 5.35 0.0145
2014-08-14 2014-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 37,218 1,942 5.51 1,570 1.03 0.0141
2014-05-15 2014-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 35,276 35,276 1,554 0.0149
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.