WEST PHARMACEUTICAL SVSC INC WST
COM · Common Stock · CUSIP 955306105 · ISIN US9553061055
- SectorHealth care
- IndustrySurgical & Medical Instruments & Apparatus
- HeadquartersExton, PA
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($113.4m this quarter). Holder counts are more reliable. Shares outstanding: 70.4m as of 2026-07-20, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $357.93. Options: 9 managers hold calls ($81.3m notional), 14 hold puts ($46.1m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 640 |
| Q4 2022 | 637 |
| Q1 2023 | 698 |
| Q2 2023 | 736 |
| Q3 2023 | 760 |
| Q4 2023 | 785 |
| Q1 2024 | 779 |
| Q2 2024 | 779 |
| Q3 2024 | 734 |
| Q4 2024 | 748 |
| Q1 2025 | 718 |
| Q2 2025 | 734 |
| Q3 2025 | 759 |
| Q4 2025 | 804 |
| Q1 2026 | 755 |
| Q2 2026 | 830 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 348 | 371 |
| Q4 2024 | 356 | 340 |
| Q1 2025 | 356 | 373 |
| Q2 2025 | 361 | 344 |
| Q3 2025 | 381 | 329 |
| Q4 2025 | 352 | 349 |
| Q1 2026 | 339 | 410 |
| Q2 2026 | 446 | 318 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $76.9m | $25.8m | 0.34 |
| Q4 2025 | $39.6m | $24.1m | 0.61 |
| Q1 2026 | $60.5m | $125.9m | 2.08 |
| Q2 2026 | $81.3m | $46.1m | 0.57 |
Biggest buyers
| FMR LLC | Added | +2.3m |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Added | +377.6k |
| LORD, ABBETT & CO. LLC | New | +181.4k |
| Quantinno Capital Management LP | Added | +146.6k |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Added | +125.6k |
| MORGAN STANLEY | Added | +124.3k |
| Point72 Asset Management, L.P. | Added | +124.0k |
| National Pension Service | Added | +122.3k |
| JPMORGAN CHASE & CO | Added | +121.1k |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | Added | +107.1k |
Biggest sellers
| APG Asset Management N.V. | Reduced | -706.7k |
| T. Rowe Price Investment Management, Inc. | Reduced | -535.4k |
| Bank of New York Mellon Corp | Reduced | -422.0k |
| VIKING GLOBAL INVESTORS LP | Sold out | -416.9k |
| AMERICAN CENTURY COMPANIES INC | Reduced | -300.1k |
| Longview Partners (Guernsey) LTD | Reduced | -281.6k |
| BROWN ADVISORY INC | Reduced | -265.6k |
| WORLDQUANT MILLENNIUM ADVISORS LLC | Reduced | -259.7k |
| Amundi | Reduced | -258.8k |
| Artisan Partners Limited Partnership | Reduced | -246.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $27.7m77.1k shares |
| CITADEL ADVISORS LLC | Added | $13.2m36.8k shares |
| JANE STREET GROUP, LLC | Reduced | $11.5m32.0k shares |
| PEAK6 LLC | Added | $10.8m30.0k shares |
| UBS Group AG | Added | $6.6m18.5k shares |
| SIMPLEX TRADING, LLC | Added | $6.4m17.7k shares |
| IMC-Chicago, LLC | Added | $4.0m11.1k shares |
| Walleye Trading LLC | New | $789.8k2.2k shares |
| BANK OF MONTREAL /CAN/ | Unchanged | $430.8k1.2k shares |
Biggest puts
| BARCLAYS PLC | Unchanged | $17.9m50.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $13.9m38.8k shares |
| CITADEL ADVISORS LLC | Added | $5.1m14.1k shares |
| IMC-Chicago, LLC | Added | $2.7m7.4k shares |
| JANE STREET GROUP, LLC | Reduced | $2.2m6.1k shares |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | New | $779.6k2.3k shares |
| PEAK6 LLC | Unchanged | $718.0k2.0k shares |
| MILLENNIUM MANAGEMENT LLC | New | $574.4k1.6k shares |
| Point72 Asset Management, L.P. | Reduced | $574.4k1.6k shares |
| Walleye Trading LLC | New | $538.5k1.5k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-04-24 | 8.4% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 7.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.7% |
Fell to 5% or below in the last year: FMR LLC (5.0%, 2026-08-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 1 | $218.2k | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 2 | $1.1m | — |
| Q3 2026 | 0 | — | 1 | $5.4m | $2.7m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-15 | Favorite Annette F Sr. VP & Chief HR Officer | Sold plan | $921.3k2.5k shares |
| 2026-09-14 | Favorite Annette F Sr. VP & Chief HR Officer | Sold plan | $887.5k2.5k shares |
| 2026-09-11 | Favorite Annette F Sr. VP & Chief HR Officer | Sold plan | $862.5k2.5k shares |
| 2026-09-08 | Favorite Annette F Sr. VP & Chief HR Officer | Sold | $2.8m8.1k shares |
| 2026-04-27 | Favorite Annette F Sr. VP & Chief HR Officer | Sold | $859.7k2.8k shares |
| 2026-04-27 | Winters Chad VP, Chief Accounting Officer | Sold | $269.4k896 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.04% of their portfolio | 6.7m $2.4bn | Reduced -184.9k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 4.6m $1.7bn | Reduced -70.2k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.06% of their portfolio | 4.0m $1.4bn | Reduced -78.2k |
| FMR LLC 0.06% of their portfolio | 3.6m $1.3bn | Added +2.3m |
| STATE STREET CORP 0.04% of their portfolio | 3.3m $1.2bn | Added +54.9k |
| Artisan Partners Limited Partnership 1.41% of their portfolio | 2.4m $865.8m | Reduced -246.1k |
| Bank of New York Mellon Corp 0.12% of their portfolio | 2.0m $733.7m | Reduced -422.0k |
| GENERATION INVESTMENT MANAGEMENT LLP 7.08% of their portfolio | 2.0m $728.2m | Reduced -215.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 1.9m $680.6m | Reduced -9.2k |
| T. Rowe Price Investment Management, Inc. 0.42% of their portfolio | 1.8m $648.0m | Reduced -535.4k |
| MORGAN STANLEY 0.03% of their portfolio | 1.6m $568.1m | Added +124.3k |
| JPMORGAN CHASE & CO 0.02% of their portfolio | 1.2m $413.0m | Added +121.1k |
| BROWN ADVISORY INC 0.60% of their portfolio | 1.1m $386.0m | Reduced -265.6k |
| Longview Partners (Guernsey) LTD 6.03% of their portfolio | 1.0m $371.1m | Reduced -281.6k |
| Invesco Ltd. 0.03% of their portfolio | 1.0m $362.5m | Reduced -46.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.06% of their portfolio | 884.9k $317.7m | Reduced -17.9k |
| NORGES BANK 0.03% of their portfolio | 862.9k $309.8m | Not comparable |
| GOLDMAN SACHS GROUP INC 0.03% of their portfolio | 814.8k $292.5m | Added +87.2k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 0.85% of their portfolio | 760.6k $273.1m | Reduced -97.7k |
| TD Asset Management Inc 0.23% of their portfolio | 731.1k $262.4m | Reduced -37.9k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 709.4k $254.7m | Reduced -21.9k |
| Capital Research Global Investors 0.03% of their portfolio | 609.2k $218.7m | Added +5.2k |
| VAN ECK ASSOCIATES CORP 0.13% of their portfolio | 604.8k $217.1m | Reduced -108.8k |
| ProShare Advisors LLC 0.31% of their portfolio | 598.0k $214.7m | Reduced -62.1k |
| Findlay Park Partners LLP 2.89% of their portfolio | 596.6k $214.2m | Reduced -20.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 584.0k $209.7m | Added +29.7k |
| Epoch Investment Partners, Inc. 1.15% of their portfolio | 562.6k $202.0m | Added +17.5k |
| APG Asset Management N.V. 0.43% of their portfolio | 560.6k $176.0m | Reduced -706.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.02% of their portfolio | 524.7k $188.4m | Reduced -1.7k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 521.7k $187.3m | Added +60.2k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.66% of their portfolio | 507.8k $182.3m | Reduced -197.6k |
| SEI INVESTMENTS CO 0.16% of their portfolio | 497.7k $178.7m | Reduced -31.5k |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO 0.12% of their portfolio | 495.3k $177.8m | Added +107.1k |
| Legal & General Group Plc 0.04% of their portfolio | 490.6k $176.1m | Reduced -15.8k |
| Nuveen, LLC 0.04% of their portfolio | 446.2k $160.2m | Added +37.2k |
| GATES FOUNDATION TRUST 0.46% of their portfolio | 444.5k $159.6m | Unchanged |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.07% of their portfolio | 438.7k $157.5m | Reduced -71.8k |
| ROYAL BANK OF CANADA 0.03% of their portfolio | 434.3k $155.9m | Added +56.7k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.45% of their portfolio | 417.3k $149.8m | Added +377.6k |
| DEUTSCHE BANK AG\ 0.04% of their portfolio | 410.7k $147.4m | Reduced -8.2k |
| Liontrust Investment Partners LLP 2.12% of their portfolio | 402.2k $144.4m | Added +65.2k |
| VANGUARD FIDUCIARY TRUST CO 0.03% of their portfolio | 396.6k $142.4m | Reduced -8.5k |
| Amundi 0.03% of their portfolio | 385.3k $138.3m | Reduced -258.8k |
| UBS Group AG 0.02% of their portfolio | 374.4k $134.4m | Added +98.9k |
| CITADEL ADVISORS LLC 0.07% of their portfolio | 352.8k $126.6m | Added +29.2k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 350.5k $125.8m | Reduced -31.3k |
| Stonehage Fleming Financial Services Holdings Ltd 4.17% of their portfolio | 340.3k $122.2m | Added +85.4k |
| Quantinno Capital Management LP 0.13% of their portfolio | 308.1k $110.6m | Added +146.6k |
| Point72 Asset Management, L.P. 0.16% of their portfolio | 283.4k $101.7m | Added +124.0k |
| Holocene Advisors, LP 0.23% of their portfolio | 275.4k $98.9m | Added +71.8k |
| Russell Investments Group, Ltd. 0.09% of their portfolio | 271.9k $97.5m | Added +76.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio | 259.5k $93.2m | Added +24.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.05% of their portfolio | 257.1k $92.3m | Reduced -56.5k |
| BARCLAYS PLC 0.03% of their portfolio | 246.2k $88.4m | Reduced -102.9k |
| RHUMBLINE ADVISERS 0.06% of their portfolio | 239.6k $86.0m | Reduced -19.6k |
| RIVERBRIDGE PARTNERS LLC 2.33% of their portfolio | 232.5k $83.5m | Reduced -28.9k |
| Border to Coast Pensions Partnership Ltd 1.20% of their portfolio | 226.9k $81.4m | Unchanged |
| LGT Group Foundation 0.91% of their portfolio | 223.4k $80.2m | Added +19.8k |
| JANE STREET GROUP, LLC 0.05% of their portfolio | 217.6k $78.1m | Reduced -87.6k |
| BROWN BROTHERS HARRIMAN & CO 0.32% of their portfolio | 206.2k $74.0m | Reduced -22.2k |
| Swiss National Bank 0.04% of their portfolio | 203.2k $72.9m | Reduced -8.0k |
| FEDERATED HERMES, INC. 0.10% of their portfolio | 197.3k $70.8m | Reduced -10.9k |
| CITIGROUP INC 0.03% of their portfolio | 190.8k $68.5m | Added +48.3k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.04% of their portfolio | 188.2k $67.6m | Added +6.1k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.25% of their portfolio | 186.3k $66.9m | Added +125.6k |
| Vest Financial, LLC 0.69% of their portfolio | 182.6k $65.5m | Reduced -20.4k |
| LORD, ABBETT & CO. LLC 0.19% of their portfolio | 181.4k $65.1m | New |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 175.1k $62.8m | Reduced -73.6k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 168.1k $60.3m | Reduced -4.7k |
| Allianz Asset Management GmbH 0.04% of their portfolio | 165.3k $41.6m | Reduced -11.2k |
| BAMCO INC /NY/ 0.09% of their portfolio | 164.2k $58.9m | Reduced -35.6k |
| NOMURA ASSET MANAGEMENT CO LTD 0.12% of their portfolio | 160.7k $57.7m | Reduced -13.6k |
| Birch Hill Investment Advisors LLC 2.32% of their portfolio | 159.7k $57.3m | Reduced -1.5k |
| Vanguard Global Advisers, LLC 0.03% of their portfolio | 152.1k $54.6m | Reduced -5.6k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.05% of their portfolio | 149.9k $53.8m | Added +104.9k |
| AMI ASSET MANAGEMENT CORP 3.03% of their portfolio | 146.8k $52.7m | Reduced -7.6k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.04% of their portfolio | 144.4k $51.2m | Added +9.4k |
| PRUDENTIAL FINANCIAL INC 0.06% of their portfolio | 143.3k $51.5m | Added +46.9k |
| HSBC HOLDINGS PLC 0.02% of their portfolio | 138.4k $49.6m | Reduced -18.5k |
| Seilern Investment Management Ltd 6.25% of their portfolio | 138.2k $49.6m | Reduced -87.8k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.03% of their portfolio | 138.2k $49.6m | Added +13.5k |
| BANK OF MONTREAL /CAN/ 0.02% of their portfolio | 137.8k $49.5m | Added +10.6k |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 129.5k $46.5m | Reduced -8.1k |
| Local Pensions Partnership Investment Ltd 0.97% of their portfolio | 128.9k $46.3m | Added +8.0k |
| California Public Employees Retirement System 0.03% of their portfolio | 127.8k $45.9m | Reduced -105.1k |
| National Pension Service 0.03% of their portfolio | 126.3k $45.3m | Added +122.3k |
| USS Investment Management Ltd 0.17% of their portfolio | 123.3k $44.3m | Added +104.1k |
| Susquehanna Portfolio Strategies, LLC 0.68% of their portfolio | 119.3k $42.8m | Added +63.6k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 114.1k $41.0m | Added +17.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.04% of their portfolio | 113.1k $40.6m | Added +2.4k |
| Conestoga Capital Advisors, LLC 0.87% of their portfolio | 111.3k $40.0m | Reduced -19.7k |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 108.5k $39.0m | Added +80.7k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.10% of their portfolio | 104.5k $37.5m | Added +28.0k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 99.6k $35.7m | Reduced -300.1k |
| Candriam S.C.A. 0.16% of their portfolio | 96.3k $34.6m | Added +87.2k |
| Asset Management One Co., Ltd. 0.09% of their portfolio | 96.3k $34.6m | Added +21.5k |
| Ninety One UK Ltd 0.07% of their portfolio | 93.0k $33.4m | Reduced -26.2k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 92.1k $33.1m | Added +9.5k |
| Creative Planning 0.02% of their portfolio | 90.5k $32.5m | Added +7.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 85.7k $30.8m | Added +364 |