West Pharmaceutical Services, Inc.
MX ˙ BMV ˙ US9553061055
SecurityMX:WST / West Pharmaceutical Services, Inc.
InstitutionTd Asset Management Inc
Latest Disclosed Ownership768,953 shares
Latest Disclosed Value $ 192,730,380
Td Asset Management Inc reports 26.95% increase in ownership of WST / West Pharmaceutical Services, Inc.

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 768,953 shares of West Pharmaceutical Services, Inc. (MX:WST) valued at $192,730,380 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 605,726 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of 26.95% 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)
2026-05-11 2026-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 768,953 163,227 26.95 192,730 15.64 0.0836
2026-02-10 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 605,726 -606 -0.10 166,659 4.78 0.1341
2025-11-10 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 606,332 125,398 26.07 159,059 51.16 0.1292
2025-07-28 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 480,934 42,549 9.71 105,228 7.22 0.0898
2025-05-07 2025-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 438,385 25,372 6.14 98,146 -27.45 0.0903
2025-02-11 2024-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 413,013 -37,294 -8.28 135,287 -3.40 0.1197
2024-11-01 2024-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 450,307 -80,728 -15.20 140,045 -19.94 0.1236
2024-08-02 2024-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 531,035 -88,669 -14.31 174,918 -28.67 0.1631
2024-05-08 2024-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 619,704 -39,856 -6.04 245,223 5.59 0.2281
2024-02-12 2023-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 659,560 183,153 38.44 232,244 29.93 0.2284
2023-10-27 2023-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 476,407 37,153 8.46 178,753 6.40 0.2166
2023-08-09 2023-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 439,254 -4,756 -1.07 168,001 9.21 0.1913
2023-05-10 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 444,010 123,224 38.41 153,836 103.77 0.1857
2023-02-07 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 320,786 52,330 19.49 75,497 11.92 0.0932
2022-11-07 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 268,456 -4,072 -1.49 67,455 -18.14 0.0845
2022-08-04 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 272,528 -18,922 -6.49 82,404 -31.16 0.0955
2022-05-10 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 291,450 -1,777 -0.61 119,701 -12.96 0.0707
2022-02-10 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 293,227 91,923 45.66 137,526 60.92 0.1152
2021-11-09 2021-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 201,304 16,538 8.95 85,462 12.34 0.0887
2021-08-11 2021-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 184,766 22,462 13.84 76,074 66.34 0.0772
2021-05-14 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 162,304 -4,673 -2.80 45,734 -3.32 0.0511
2021-02-16 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 166,977 2,106 1.28 47,306 4.38 0.0574
2020-11-10 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 164,871 43,718 36.08 45,323 64.68 0.0629
2020-08-13 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 121,153 31,004 34.39 27,522 100.52 0.0392
2020-05-15 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 90,149 -9,700 -9.71 13,725 -8.56 0.0232
2020-02-11 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 99,849 -20,796 -17.24 15,010 -12.27 0.0218
2019-11-07 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 120,645 2,340 1.98 17,110 15.56 0.0262
2019-08-01 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 118,305 6,110 5.45 14,806 19.75 0.0222
2019-05-08 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 112,195 1,880 1.70 12,364 14.33 0.0189
2019-02-01 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 110,315 -5,460 -4.72 10,814 -24.35 0.0188
2018-11-01 2018-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 115,775 820 0.71 14,295 25.24 0.0211
2018-07-31 2018-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 114,955 2,160 1.91 11,414 14.61 0.0174
2018-05-11 2018-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 112,795 7,100 6.72 9,959 -4.51 0.0152
2018-02-02 2017-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 105,695 -580 -0.55 10,429 1.95 0.0152
2017-11-09 2017-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 106,275 2,132 2.05 10,230 3.92 0.0153
2017-08-01 2017-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 104,143 -1,500 -1.42 9,844 14.17 0.0155
2017-05-05 2017-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 105,643 -3,300 -3.03 8,622 -6.71 0.0138
2017-02-08 2016-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 108,943 1,315 1.22 9,242 15.27 0.0156
2016-11-02 2016-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 107,628 7,385 7.37 8,018 5.42 0.0139
2016-08-04 2016-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 100,243 -2,000 -1.96 7,606 7.32 0.0138
2016-05-05 2016-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 102,243 1,500 1.49 7,087 16.81 0.0133
2016-02-04 2015-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 100,743 0 0.00 6,067 11.28 0.0120
2015-11-12 2015-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 100,743 15,943 18.80 5,452 10.70 0.0107
2015-08-11 2015-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 84,800 28,000 49.30 4,925 44.01 0.0088
2015-04-28 2015-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 56,800 56,800 3,420 0.0062
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.