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 ($103.2m this quarter). Holder counts are more reliable. Shares outstanding: 71.9m as of 2025-07-21, 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 ≈ $218.04. Options: 12 managers hold calls ($82.3m notional), 13 hold puts ($32.1m).
Trends to Q2 2025
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 |
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 2023 | 313 | 355 |
| Q4 2023 | 329 | 367 |
| Q1 2024 | 375 | 357 |
| Q2 2024 | 353 | 372 |
| Q3 2024 | 348 | 371 |
| Q4 2024 | 356 | 340 |
| Q1 2025 | 356 | 373 |
| Q2 2025 | 361 | 344 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $92.5m | $152.3m | 1.65 |
| Q4 2024 | $77.4m | $138.7m | 1.79 |
| Q1 2025 | $98.0m | $63.0m | 0.64 |
| Q2 2025 | $82.3m | $32.1m | 0.39 |
Biggest buyers
| GENERATION INVESTMENT MANAGEMENT LLP | New | +1.2m |
| ROYAL BANK OF CANADA | Added | +564.4k |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Added | +280.8k |
| ProShare Advisors LLC | Added | +235.3k |
| Amundi | Added | +228.7k |
| Point72 Asset Management, L.P. | Added | +211.7k |
| MORGAN STANLEY | Added | +199.8k |
| D. E. Shaw & Co., Inc. | Added | +181.3k |
| J. Goldman & Co LP | New | +163.8k |
| MILLENNIUM MANAGEMENT LLC | Added | +161.2k |
Biggest sellers
| FMR LLC | Reduced | -634.2k |
| Durable Capital Partners LP | Reduced | -532.5k |
| FRANKLIN RESOURCES INC | Reduced | -456.5k |
| JPMORGAN CHASE & CO | Reduced | -435.1k |
| Capital Research Global Investors | Sold out | -390.7k |
| BlackRock, Inc. | Reduced | -325.2k |
| CONGRESS ASSET MANAGEMENT CO | Sold out | -253.3k |
| BROWN ADVISORY INC | Reduced | -247.2k |
| Bank of New York Mellon Corp | Reduced | -168.9k |
| CITADEL ADVISORS LLC | Reduced | -151.9k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $28.1m128.6k shares |
| JANE STREET GROUP, LLC | Added | $27.7m126.8k shares |
| CITADEL ADVISORS LLC | Reduced | $11.6m52.8k shares |
| PEAK6 LLC | Added | $4.5m20.6k shares |
| SIMPLEX TRADING, LLC | Added | $4.5m20.6k shares |
| GROUP ONE TRADING LLC | Reduced | $1.8m8.3k shares |
| GARDA CAPITAL PARTNERS LP | Reduced | $1.2m5.6k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $984.6k4.5k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $875.2k4.0k shares |
| Walleye Capital LLC | Added | $547.0k2.5k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $14.8m67.7k shares |
| CITADEL ADVISORS LLC | Reduced | $5.5m25.2k shares |
| JANE STREET GROUP, LLC | Reduced | $4.1m18.8k shares |
| PEAK6 LLC | Added | $2.9m13.2k shares |
| Walleye Trading LLC | Added | $962.7k4.4k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $940.8k4.3k shares |
| Walleye Capital LLC | Added | $787.7k3.6k shares |
| SIMPLEX TRADING, LLC | Unchanged | $743.0k3.4k shares |
| GARDA CAPITAL PARTNERS LP | Unchanged | $634.5k2.9k shares |
| TUDOR INVESTMENT CORP ET AL | New | $350.1k1.6k 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 in Q2 2025
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 |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 7 | $40.1m | $17.4m |
| Q4 2023 | 0 | — | 2 | $737.2k | — |
| Q1 2024 | 0 | — | 4 | $26.7m | $23.1m |
| Q2 2024 | 0 | — | 3 | $25.0m | $24.2m |
| Q3 2024 | 0 | — | 2 | $9.7m | $9.4m |
| Q4 2024 | 0 | — | 1 | $218.2k | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.03% of their portfolio | 9.3m $2.0bn | Added +85.1k |
| BlackRock, Inc. 0.03% of their portfolio | 6.6m $1.4bn | Reduced -325.2k |
| STATE STREET CORP 0.03% of their portfolio | 3.3m $715.9m | Added +68.3k |
| Bank of New York Mellon Corp 0.13% of their portfolio | 3.2m $701.6m | Reduced -168.9k |
| BROWN ADVISORY INC 0.87% of their portfolio | 3.0m $661.1m | Reduced -247.2k |
| Artisan Partners Limited Partnership 0.74% of their portfolio | 2.3m $496.1m | Added +71.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 1.8m $399.4m | Reduced -20.7k |
| APG Asset Management N.V. 0.92% of their portfolio | 1.7m $309.2m | Added +96.5k |
| VAN ECK ASSOCIATES CORP 0.37% of their portfolio | 1.5m $325.2m | Added +38.3k |
| MORGAN STANLEY 0.02% of their portfolio | 1.5m $324.9m | Added +199.8k |
| GENERATION INVESTMENT MANAGEMENT LLP 1.62% of their portfolio | 1.2m $255.1m | New |
| FRANKLIN RESOURCES INC 0.06% of their portfolio | 1.1m $241.6m | Reduced -456.5k |
| ROYAL BANK OF CANADA 0.02% of their portfolio | 1.1m $237.9m | Added +564.4k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 0.55% of their portfolio | 1.1m $230.0m | Added +53.4k |
| Durable Capital Partners LP 1.72% of their portfolio | 1.0m $227.7m | Reduced -532.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.05% of their portfolio | 1.0m $226.6m | Reduced -98.9k |
| Invesco Ltd. 0.04% of their portfolio | 959.5k $209.9m | Added +10.1k |
| NORGES BANK 0.03% of their portfolio | 917.8k $200.8m | Added +14.0k |
| Findlay Park Partners LLP 1.84% of their portfolio | 816.6k $178.7m | Reduced -29.6k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 749.9k $164.1m | Reduced -8.3k |
| ProShare Advisors LLC 0.32% of their portfolio | 738.4k $161.6m | Added +235.3k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 666.3k $145.8m | Added +62.6k |
| TWO SIGMA INVESTMENTS, LP 0.23% of their portfolio | 584.1k $127.8m | Added +61.2k |
| Amundi 0.04% of their portfolio | 502.8k $111.2m | Added +228.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 502.4k $109.9m | Added +10.5k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 500.1k $109.4m | Reduced -11.2k |
| Legal & General Group Plc 0.03% of their portfolio | 498.9k $109.2m | Reduced -6.7k |
| TD Asset Management Inc 0.09% of their portfolio | 480.9k $105.2m | Added +42.5k |
| NEUBERGER BERMAN GROUP LLC 0.08% of their portfolio | 472.9k $103.5m | Added +39.5k |
| T. Rowe Price Investment Management, Inc. 0.06% of their portfolio | 466.4k $102.1m | Added +4.4k |
| MILLENNIUM MANAGEMENT LLC 0.09% of their portfolio | 465.6k $101.9m | Added +161.2k |
| Champlain Investment Partners, LLC 0.68% of their portfolio | 447.7k $98.0m | Reduced -23.5k |
| SEI INVESTMENTS CO 0.11% of their portfolio | 445.3k $97.4m | Added +14.7k |
| GATES FOUNDATION TRUST 0.20% of their portfolio | 444.5k $97.3m | Unchanged |
| Seilern Investment Management Ltd 6.23% of their portfolio | 431.6k $94.4m | Reduced -9.8k |
| Liontrust Investment Partners LLP 1.32% of their portfolio | 421.6k $92.2m | Reduced -25.1k |
| DF DENT & CO INC 1.10% of their portfolio | 395.3k $86.5m | Reduced -44.0k |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO 0.08% of their portfolio | 388.2k $84.9m | Unchanged |
| RIVERBRIDGE PARTNERS LLC 1.35% of their portfolio | 383.5k $83.9m | Reduced -24.9k |
| AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio | 373.4k $81.7m | Added +3.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio | 373.3k $81.7m | Reduced -15.3k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.21% of their portfolio | 366.2k $80.1m | Added +13.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.06% of their portfolio | 365.2k $79.9m | Added +122.3k |
| Epoch Investment Partners, Inc. 0.41% of their portfolio | 361.3k $79.0m | Added +31.5k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.30% of their portfolio | 349.2k $76.4m | Added +280.8k |
| Point72 Asset Management, L.P. 0.18% of their portfolio | 340.0k $74.4m | Added +211.7k |
| Nuveen, LLC 0.02% of their portfolio | 320.4k $70.1m | Reduced -33.6k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 315.8k $69.1m | Reduced -3.5k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.34% of their portfolio | 313.3k $68.6m | Added +45.0k |
| BAMCO INC /NY/ 0.18% of their portfolio | 307.6k $67.3m | Reduced -108.5k |
| UBS Group AG 0.01% of their portfolio | 299.1k $65.4m | Added +116.9k |
| TWO SIGMA ADVISERS, LP 0.13% of their portfolio | 296.5k $64.9m | Added +52.6k |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 284.3k $62.2m | Added +181.3k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 280.9k $61.5m | Reduced -22.5k |
| Vest Financial, LLC 0.76% of their portfolio | 244.8k $53.6m | Added +85.9k |
| RHUMBLINE ADVISERS 0.05% of their portfolio | 243.7k $53.3m | Added +6.9k |
| FEDERATED HERMES, INC. 0.09% of their portfolio | 224.7k $49.2m | Reduced -7.2k |
| LGT Group Foundation 0.61% of their portfolio | 223.9k $49.0m | Added +2.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 220.0k $48.1m | Reduced -435.1k |
| Swiss National Bank 0.03% of their portfolio | 218.8k $47.9m | Added +14.6k |
| Pictet Asset Management Holding SA 0.05% of their portfolio | 210.5k $46.1m | Added +76.2k |
| BROWN BROTHERS HARRIMAN & CO 0.28% of their portfolio | 202.4k $44.3m | Added +51.7k |
| BARCLAYS PLC 0.02% of their portfolio | 199.6k $43.7m | Added +7.4k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 191.6k $41.9m | Added +13.4k |
| NOMURA ASSET MANAGEMENT CO LTD 0.11% of their portfolio | 190.2k $41.6m | Added +58.4k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 169.9k $37.2m | Reduced -4.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.14% of their portfolio | 167.9k $36.7m | Added +62.8k |
| AMI ASSET MANAGEMENT CORP 2.07% of their portfolio | 165.3k $36.2m | Reduced -8.5k |
| J. Goldman & Co LP 1.13% of their portfolio | 163.8k $35.8m | New |
| Russell Investments Group, Ltd. 0.04% of their portfolio | 160.1k $35.0m | Added +84.4k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 159.9k $35.0m | Added +17.0k |
| BANK OF MONTREAL /CAN/ 0.02% of their portfolio | 159.5k $34.9m | Added +18.8k |
| Baird Financial Group, Inc. 0.06% of their portfolio | 153.8k $33.7m | Reduced -11.9k |
| Assenagon Asset Management S.A. 0.05% of their portfolio | 153.5k $33.6m | Reduced -81.3k |
| Qube Research & Technologies Ltd 0.04% of their portfolio | 139.8k $30.6m | New |
| EULAV Asset Management 0.71% of their portfolio | 137.6k $30.1m | Unchanged |
| HSBC HOLDINGS PLC 0.02% of their portfolio | 132.3k $28.9m | Reduced -5.1k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 129.0k $28.2m | Added +87.7k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 128.8k $28.2m | Reduced -151.9k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 126.8k $27.7m | Added +7.3k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 126.7k $27.7m | Reduced -106.8k |
| Local Pensions Partnership Investment Ltd 0.51% of their portfolio | 126.4k $27.6m | Unchanged |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 117.6k $25.7m | Reduced -37.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 117.6k $25.7m | Reduced -704 |
| Nan Shan Life Insurance Co., Ltd. 0.54% of their portfolio | 110.3k $24.1m | Reduced -1.6k |
| Conestoga Capital Advisors, LLC 0.35% of their portfolio | 107.9k $23.6m | Added +35.9k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 105.6k $23.1m | Reduced -2.7k |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 105.0k $23.0m | Added +100.6k |
| FMR LLC 0.00% of their portfolio | 104.8k $22.9m | Reduced -634.2k |
| Ninety One UK Ltd 0.05% of their portfolio | 100.6k $22.0m | Reduced -11.9k |
| Man Group plc 0.05% of their portfolio | 100.0k $21.9m | Added +69.1k |
| CITIGROUP INC 0.01% of their portfolio | 95.1k $20.8m | Reduced -9.6k |
| California Public Employees Retirement System 0.01% of their portfolio | 94.3k $20.6m | Added +4.6k |
| Ensign Peak Advisors, Inc 0.04% of their portfolio | 93.6k $20.5m | Reduced -15.0k |
| LPL Financial LLC 0.01% of their portfolio | 90.5k $19.8m | Added +16.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 83.3k $18.2m | Reduced -6.1k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 81.9k $17.9m | Added +1.7k |
| Squarepoint Ops LLC 0.04% of their portfolio | 81.1k $17.8m | Added +27.2k |
| PRUDENTIAL FINANCIAL INC 0.02% of their portfolio | 78.5k $17.2m | Added +40.1k |
| ROCKLAND TRUST CO 0.83% of their portfolio | 78.0k $17.1m | Added +13.3k |