West Pharmaceutical Services, Inc.
MX ˙ BMV ˙ US9553061055
SecurityMX:WST / West Pharmaceutical Services, Inc.
InstitutionQuadrant Capital Group Llc
Latest Disclosed Ownership1,962 shares
Latest Disclosed Value $ 491,756
Quadrant Capital Group Llc reports 1.36% decrease in ownership of WST / West Pharmaceutical Services, Inc.

On May 13, 2026 - Quadrant Capital Group Llc filed a 13F-HR/A form disclosing ownership of 1,962 shares of West Pharmaceutical Services, Inc. (MX:WST) valued at $491,756 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,989 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of -1.36% 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)
2026-05-13 2026-03-31 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 1,962 -27 -1.36 492 -10.24 0.0147
2026-05-11 2026-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,962 -27 49 0.0369
2026-02-12 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,989 0 0.00 547 4.99 0.0165
2025-11-13 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,989 18 0.91 522 20.88 0.0170
2025-08-13 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,971 -653 -24.89 431 -26.58 0.0155
2025-05-13 2025-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 2,624 1,998 319.17 587 186.34 0.0218
2025-02-13 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 626 32 5.39 205 15.17 0.0141
2024-11-12 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 594 -63 -9.59 178 -17.59 0.0124
2024-08-12 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 657 -125 -15.98 216 -30.10 0.0161
2024-05-15 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 782 -31 -3.81 309 8.04 0.0244
2024-02-08 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 813 11 1.37 286 -4.67 0.0246
2023-11-14 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 802 69 9.41 301 7.14 0.0301
2023-08-10 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 733 18 2.52 280 13.36 0.0278
2023-05-11 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 715 209 41.30 248 107.56 0.0258
2023-02-13 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 506 13 2.64 119 -1.65 0.0135
2022-11-10 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 493 -65 -11.65 121 -28.40 0.0160
2022-08-09 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 558 85 17.97 169 -12.89 0.0227
2022-05-06 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 473 43 10.00 194 -3.96 0.0235
2022-02-01 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 430 60 16.22 202 28.66 0.0241
2021-11-12 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 370 16 4.52 157 23.62 0.0219
2021-08-09 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 354 16 4.73 127 33.68 0.0184
2021-05-12 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 338 95 39.09 95 37.68 0.0154
2021-02-16 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 243 -37 -13.21 69 -10.39 0.0128
2020-11-13 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 280 75 36.59 77 63.83 0.0168
2020-08-13 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 205 -411 -66.72 47 -50.53 0.0104
2020-05-15 2020-03-31 13F West Pharmaceutical Services Com 955306105 616 63 11.39 95 17.28 0.0159
2020-03-19 2019-12-31 13F/A-1 West Pharmaceutical Services Com 955306105 553 0 0.00 81 6.58 0.0098
2020-02-03 2019-12-31 13F West Pharmaceutical Services Com 955306105 553 0 81 273.7096
2019-10-24 2019-09-30 13F West Pharmaceutical Services COM 955306105 553 0 0.00 76 15.15 0.0117
2019-07-24 2019-06-30 13F West Pharmaceutical Services COM 955306105 553 235 73.90 66 106.25 0.0104
2019-04-29 2019-03-31 13F West Pharmaceutical Services COM 955306105 318 215 208.74 32 255.56 0.0056
2019-01-17 2018-12-31 13F West Pharmaceutical Services COM 955306105 103 0 0.00 9 -18.18 0.0024
2018-10-29 2018-09-30 13F West Pharmaceutical Services COM 955306105 103 0 0.00 11 22.22 0.0031
2018-08-08 2018-06-30 13F West Pharmaceutical Services COM 955306105 103 1 0.98 9 12.50 0.0032
2018-05-10 2018-03-31 13F West Pharmaceutical Services COM 955306105 102 0 0.00 8 -11.11 0.0029
2018-01-31 2017-12-31 13F West Pharmaceutical Services COM 955306105 102 0 0.00 9 0.00 0.0036
2017-10-13 2017-09-30 13F West Pharmaceutical Services COM 955306105 102 26 34.21 9 350.00 0.0037
2017-08-14 2017-06-30 13F West Pharmaceutical Services COM 955306105 76 0 0.00 2 -60.00 0.0009
2017-04-10 2017-03-31 13F West Pharmaceutical Services COM 955306105 76 53 230.43 5 400.00 0.0022
2017-01-11 2016-12-31 13F West Pharmaceutical Services COM 955306105 23 0 0.00 1 0.00 0.0005
2016-10-25 2016-09-30 13F West Pharmaceutical Services COM 955306105 23 0 0.00 1 0.00 0.0007
2016-07-28 2016-06-30 13F West Pharmaceutical Services COM 955306105 23 23 1 0.0007
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.