West Pharmaceutical Services, Inc.
DE ˙ DB ˙ GB00BLGXWY71
266,50 € ↓ -2,60 (-0,97%)
2026-06-03
DEL PRIS
SecurityDE:WPS / West Pharmaceutical Services, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership3,293,778 shares
Latest Disclosed Value $ 825,552,518
State Street Corp reports 1.28% increase in ownership of WPS / West Pharmaceutical Services, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 3,293,778 shares of West Pharmaceutical Services, Inc. (DE:WPS) valued at $703,221,603 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,252,020 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of 1.28% during the quarter. The current value of the position is $877,791,837 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 SVSC COM 955306105 3,293,778 41,758 1.28 825,553 -7.73 0.0285
2026-02-13 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,252,020 44,109 1.38 894,761 6.33 0.0300
2025-11-14 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,207,911 -63,955 -1.95 841,531 17.55 0.0292
2025-08-14 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,271,866 68,330 2.13 715,884 -0.18 0.0268
2025-05-15 2025-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,203,536 -43,177 -1.33 717,208 -32.56 0.0296
2025-02-14 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,246,713 32,265 1.00 1,063,534 10.23 0.0420
2024-11-14 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,214,448 10,060 0.31 964,850 -8.59 0.0393
2024-08-14 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,204,388 -14,592 -0.45 1,055,493 -17.14 0.0461
2024-05-15 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,218,980 -52,949 -1.62 1,273,783 10.56 0.0569
2024-02-14 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,271,929 53,421 1.66 1,152,112 -4.60 0.0560
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,218,508 -50,974 -1.56 1,207,616 -3.43 0.0670
2023-08-14 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,269,482 -20,388 -0.62 1,250,479 9.71 0.0657
2023-05-15 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,289,870 -69,645 -2.07 1,139,837 44.16 0.0643
2023-05-15 2022-12-31 13F/A-99 WEST PHARMACEUTICAL SVSC COM 955306105 3,359,515 28,241 0.85 790,662 -3.55 0.0465
2023-05-15 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,359,515 28,241 790,662 0.0465
2022-11-15 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,331,274 7,565 0.23 819,760 -18.43 0.0519
2022-08-15 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,323,709 -70,198 -2.07 1,004,990 -27.90 0.0602
2022-05-16 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,393,907 -61,802 -1.79 1,393,912 -14.00 0.0689
2022-02-14 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,455,709 54,510 1.60 1,620,762 12.25 0.0769
2021-11-15 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,401,199 -9,736 -0.29 1,443,945 17.89 0.0763
2021-08-16 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,410,935 115,853 3.52 1,224,867 31.92 0.0646
2021-07-09 2021-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 3,295,082 -52,149 -1.56 928,488 -2.09 0.0532
2021-05-17 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,295,082 -52,149 928,488 0.0532
2021-02-16 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,347,231 -132,955 -3.82 948,304 -0.88 0.0581
2020-11-10 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,480,186 5,132 0.15 956,703 21.19 0.0653
2020-08-14 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 3,475,054 687,428 24.66 789,428 86.00 0.0574
2020-06-19 2020-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 2,787,626 53,552 1.96 424,416 3.26 0.0371
2020-05-11 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,787,626 53,552 424,416 37,272.2705
2020-02-06 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,734,074 577,028 26.75 411,013 34.36 0.0282
2019-11-14 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,157,046 -103,991 -4.60 305,912 8.11 0.0228
2019-08-14 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,261,037 -28,523 -1.25 282,969 12.15 0.0211
2019-05-15 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,289,560 155,303 7.28 252,310 20.59 0.0197
2019-02-12 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,134,257 -223,457 -9.48 209,221 -28.13 0.0190
2018-11-09 2018-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,357,714 4,444 0.19 291,104 24.58 0.0224
2018-08-14 2018-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,353,270 -46,001 -1.92 233,660 10.30 0.0195
2018-05-15 2018-03-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,399,271 -55,776 -2.27 211,834 -12.55 0.0180
2018-02-14 2017-12-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,455,047 56,427 2.35 242,242 4.92 0.0195
2017-11-14 2017-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,398,620 -112,488 -4.48 230,892 -2.72 0.0199
2017-08-14 2017-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,511,108 67,937 2.78 237,351 19.04 0.0210
2017-05-15 2017-03-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,443,171 -104,358 -4.10 199,385 -7.74 0.0178
2017-02-09 2016-12-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,547,529 46,389 1.85 216,107 15.98 0.0203
2017-01-13 2016-09-30 13F/A-1 WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,501,140 -32,760 -1.29 186,332 -3.09 0.0188
2016-11-14 2016-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,501,140 186,332
2016-08-12 2016-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,533,900 -531,923 -17.35 192,276 -9.52 0.0207
2016-05-20 2016-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,065,823 -216,120 -6.59 212,517 7.53 0.0230
2016-05-12 2016-03-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,065,823 212,517
2016-02-16 2015-12-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,281,943 174,171 5.60 197,636 17.51 0.0216
2015-11-16 2015-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,107,772 697,869 28.96 168,188 20.16 0.0196
2015-08-13 2015-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,409,903 -397,809 -14.17 139,965 -17.21 0.0150
2015-05-15 2015-03-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,807,712 -358,395 -11.32 169,051 0.29 0.0173
2015-02-11 2014-12-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,166,107 -42,675 -1.33 168,566 17.37 0.0168
2014-11-12 2014-09-30 13F/A-1 WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,208,782 230,628 7.74 143,625 14.33 0.0155
2014-11-10 2014-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 3,208,782 143,625
2014-08-12 2014-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,978,154 238,496 8.71 125,618 4.09 0.0136
2014-05-15 2014-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,739,658 1,159,903 73.42 120,684 55.72 0.0137
2014-05-13 2014-03-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 2,740,434 120,718
2014-02-06 2013-12-31 13F/A-1 WEST PHARMACEUTICAL SVSC Common equity shares 955306105 1,579,755 -15,695 -0.98 77,502 18.05 0.0086
2014-02-06 2013-12-31 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 781,479 42,789
2013-11-12 2013-09-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 1,595,450 807,603 102.51 65,651 18.60 0.0081
2013-08-08 2013-06-30 13F WEST PHARMACEUTICAL SVSC Common equity shares 955306105 787,847 787,847 55,357 0.0072
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.