West Pharmaceutical Services, Inc.
DE ˙ DB ˙ GB00BLGXWY71
269,50 € ↑3,00 (1,13%)
2026-06-04
AKTIENPREIS
SecurityDE:WPS / West Pharmaceutical Services, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership209,660 shares
Latest Disclosed Value $ 52,549,182
Renaissance Technologies Llc reports 100.18% increase in ownership of WPS / West Pharmaceutical Services, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 209,660 shares of West Pharmaceutical Services, Inc. (DE:WPS) valued at $44,762,410 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 104,736 shares of West Pharmaceutical Services, Inc.. This represents a change in shares of 100.18% during the quarter. The current value of the position is $56,503,370 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)
2026-05-14 2026-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 209,660 104,924 100.18 52,549 82.35 0.0822
2026-02-12 2025-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 104,736 104,736 28,817 0.0447
2025-11-13 2025-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -24,300 -100.00 0 -100.00
2025-08-13 2025-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 24,300 24,300 5,317 0.0071
2023-05-12 2023-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -294,700 -100.00 0 -100.00
2023-02-13 2022-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 294,700 95,011 47.58 69 -99.86 0.0949
2022-11-14 2022-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 199,689 -2,311 -1.14 49,139 -19.55 0.0695
2022-08-12 2022-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 202,000 197,100 4,022.45 61,079 2,935.74 0.0723
2022-05-13 2022-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 4,900 3,300 206.25 2,012 168.27 0.0024
2022-02-11 2021-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,600 1,600 750 0.0009
2021-05-13 2021-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -44,200 -100.00 0 -100.00
2021-02-10 2020-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 44,200 44,200 12,522 0.0136
2020-11-13 2020-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -61,100 -100.00 0 -100.00
2020-08-13 2020-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 61,100 -304,100 -83.27 13,880 -75.04 0.0120
2020-05-14 2020-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 365,200 -195,200 -34.83 55,602 -34.00 0.0540
2020-02-13 2019-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 560,400 187,700 50.36 84,245 59.39 0.0647
2019-11-13 2019-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 372,700 63,700 20.61 52,856 36.68 0.0447
2019-08-12 2019-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 309,000 -111,600 -26.53 38,671 -16.57 0.0340
2019-05-14 2019-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 420,600 281,000 201.29 46,350 238.69 0.0421
2019-02-12 2018-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 139,600 -20,800 -12.97 13,685 -30.90 0.0150
2018-11-13 2018-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 160,400 -113,200 -41.37 19,805 -27.10 0.0204
2018-08-13 2018-06-30 13F/A-1 WEST PHARMACEUTICAL SVSC COM 955306105 273,600 -153,600 -35.96 27,166 -27.97 0.0296
2018-08-13 2018-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 427,200 37,717
2018-05-14 2018-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 427,200 60,700 16.56 37,717 4.30 0.0412
2018-02-13 2017-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 366,500 -54,000 -12.84 36,163 -10.66 0.0399
2017-11-13 2017-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 420,500 101,900 31.98 40,477 34.41 0.0476
2017-08-11 2017-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 318,600 314,500 7,670.73 30,114 8,889.25 0.0384
2017-05-12 2017-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 4,100 4,100 335 0.0005
2016-11-14 2016-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 0 -45,900 -100.00 0 -100.00
2016-08-12 2016-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 45,900 -468,300 -91.07 3,483 -90.23 0.0066
2016-05-13 2016-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 514,200 -300 -0.06 35,644 15.04 0.0678
2016-02-11 2015-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 514,500 -84,000 -14.04 30,983 -4.35 0.0675
2015-11-12 2015-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 598,500 -235,300 -28.22 32,391 -33.11 0.0773
2015-08-14 2015-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 833,800 -69,400 -7.68 48,427 -10.95 0.1103
2015-05-13 2015-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 903,200 -37,400 -3.98 54,382 8.59 0.1158
2015-02-13 2014-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 940,600 -312,200 -24.92 50,078 -10.69 0.1209
2014-11-12 2014-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,252,800 -354,300 -22.05 56,075 -17.28 0.1535
2014-08-13 2014-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,607,100 187,300 13.19 67,787 8.39 0.1580
2014-05-14 2014-03-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 1,419,800 499,800 54.33 62,542 38.57 0.1500
2014-02-14 2013-12-31 13F WEST PHARMACEUTICAL SVSC COM 955306105 920,000 244,100 36.11 45,135 62.28 0.1081
2013-11-13 2013-09-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 675,900 443,500 190.83 27,813 70.34 0.0675
2013-08-12 2013-06-30 13F WEST PHARMACEUTICAL SVSC COM 955306105 232,400 232,400 16,328 0.0428
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.