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 ($91.5m this quarter). Holder counts are more reliable. Shares outstanding: 71.8m as of 2025-04-21, 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 ≈ $223.46. Options: 16 managers hold calls ($98.0m notional), 14 hold puts ($63.0m).
Trends to Q1 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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 335 | 323 |
| 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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $148.7m | $103.8m | 0.70 |
| Q3 2024 | $92.5m | $152.3m | 1.65 |
| Q4 2024 | $77.4m | $138.7m | 1.79 |
| Q1 2025 | $98.0m | $63.0m | 0.64 |
Biggest buyers
| Durable Capital Partners LP | Added | +935.7k |
| VAN ECK ASSOCIATES CORP | Added | +758.4k |
| BROWN ADVISORY INC | Added | +716.4k |
| TWO SIGMA INVESTMENTS, LP | Added | +446.8k |
| GATES FOUNDATION TRUST | New | +444.5k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | Added | +365.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +344.0k |
| WORLDQUANT MILLENNIUM ADVISORS LLC | New | +268.3k |
| MORGAN STANLEY | Added | +252.2k |
| VANGUARD GROUP INC | Added | +244.3k |
Biggest sellers
| ALLIANCEBERNSTEIN L.P. | Reduced | -2.5m |
| Artisan Partners Limited Partnership | Reduced | -915.4k |
| BlackRock, Inc. | Reduced | -520.6k |
| CITADEL ADVISORS LLC | Reduced | -390.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -370.6k |
| FMR LLC | Reduced | -351.7k |
| D. E. Shaw & Co., Inc. | Reduced | -322.9k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | -287.9k |
| T. Rowe Price Investment Management, Inc. | Reduced | -271.2k |
| FRANKLIN RESOURCES INC | Reduced | -220.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $37.4m167.2k shares |
| CITADEL ADVISORS LLC | Added | $19.8m88.4k shares |
| JANE STREET GROUP, LLC | Added | $11.3m50.4k shares |
| Caption Management, LLC | New | $7.8m34.8k shares |
| WOLVERINE TRADING, LLC | Added | $5.0m22.7k shares |
| SIMPLEX TRADING, LLC | Added | $3.8m16.8k shares |
| PEAK6 LLC | Added | $2.9m13.1k shares |
| GROUP ONE TRADING LLC | Added | $2.9m12.8k shares |
| WELLS FARGO & COMPANY/MN | New | $2.2m10.0k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $1.9m8.4k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $19.9m89.1k shares |
| JANE STREET GROUP, LLC | Added | $19.3m86.1k shares |
| MILLENNIUM MANAGEMENT LLC | New | $7.0m31.4k shares |
| CITADEL ADVISORS LLC | Added | $6.6m29.7k shares |
| WOLVERINE TRADING, LLC | Reduced | $3.7m16.6k shares |
| GROUP ONE TRADING LLC | Added | $2.4m10.7k shares |
| PEAK6 LLC | New | $1.5m6.9k shares |
| SIMPLEX TRADING, LLC | Added | $761.0k3.4k shares |
| Twin Tree Management, LP | New | $694.0k3.1k shares |
| GARDA CAPITAL PARTNERS LP | New | $649.3k2.9k 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 Q1 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 |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 5 | $24.5m | — |
| 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 | — | — |
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.04% of their portfolio | 9.2m $2.1bn | Added +244.3k |
| BlackRock, Inc. 0.03% of their portfolio | 6.9m $1.6bn | Reduced -520.6k |
| Bank of New York Mellon Corp 0.15% of their portfolio | 3.4m $755.7m | Reduced -74.5k |
| BROWN ADVISORY INC 1.05% of their portfolio | 3.3m $731.7m | Added +716.4k |
| STATE STREET CORP 0.03% of their portfolio | 3.2m $717.2m | Reduced -43.2k |
| Artisan Partners Limited Partnership 0.80% of their portfolio | 2.2m $491.5m | Reduced -915.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 1.9m $413.7m | Added +74.8k |
| Durable Capital Partners LP 3.15% of their portfolio | 1.6m $352.2m | Added +935.7k |
| APG Asset Management N.V. 1.00% of their portfolio | 1.6m $323.8m | Added +124.7k |
| FRANKLIN RESOURCES INC 0.10% of their portfolio | 1.6m $349.4m | Reduced -220.3k |
| VAN ECK ASSOCIATES CORP 0.42% of their portfolio | 1.4m $324.1m | Added +758.4k |
| MORGAN STANLEY 0.02% of their portfolio | 1.3m $287.8m | Added +252.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.07% of their portfolio | 1.1m $254.0m | Added +344.0k |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 0.55% of their portfolio | 997.9k $223.4m | Added +365.6k |
| Invesco Ltd. 0.04% of their portfolio | 949.5k $212.6m | Added +194.2k |
| NORGES BANK 0.03% of their portfolio | 903.8k $202.3m | Added +16.6k |
| Findlay Park Partners LLP 1.95% of their portfolio | 846.2k $189.4m | Added +11.5k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 758.2k $169.8m | Reduced -10.6k |
| FMR LLC 0.01% of their portfolio | 738.9k $165.4m | Reduced -351.7k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 655.2k $146.7m | Reduced -153.5k |
| GOLDMAN SACHS GROUP INC 0.03% of their portfolio | 603.7k $135.2m | Added +91.7k |
| ROYAL BANK OF CANADA 0.03% of their portfolio | 523.1k $117.1m | Reduced -2.4k |
| TWO SIGMA INVESTMENTS, LP 0.25% of their portfolio | 522.8k $117.1m | Added +446.8k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 511.3k $114.5m | Added +123.4k |
| Legal & General Group Plc 0.03% of their portfolio | 505.6k $113.2m | Added +18.5k |
| ProShare Advisors LLC 0.25% of their portfolio | 503.1k $112.6m | Reduced -74.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 491.8k $110.1m | Added +23.7k |
| Champlain Investment Partners, LLC 0.76% of their portfolio | 471.2k $105.5m | Added +26.5k |
| T. Rowe Price Investment Management, Inc. 0.07% of their portfolio | 462.1k $103.4m | Reduced -271.2k |
| Liontrust Investment Partners LLP 1.56% of their portfolio | 446.7k $100.0m | Added +158.0k |
| GATES FOUNDATION TRUST 0.24% of their portfolio | 444.5k $99.5m | New |
| Seilern Investment Management Ltd 6.46% of their portfolio | 441.4k $98.8m | Reduced -2.5k |
| DF DENT & CO INC 1.31% of their portfolio | 439.3k $98.3m | Added +42.2k |
| TD Asset Management Inc 0.09% of their portfolio | 438.4k $98.1m | Added +25.4k |
| NEUBERGER BERMAN GROUP LLC 0.08% of their portfolio | 433.4k $97.0m | Added +52.4k |
| SEI INVESTMENTS CO 0.12% of their portfolio | 430.6k $96.4m | Reduced -79.7k |
| BAMCO INC /NY/ 0.27% of their portfolio | 416.1k $93.2m | Reduced -18.0k |
| RIVERBRIDGE PARTNERS LLC 1.47% of their portfolio | 408.4k $91.4m | Reduced -26.9k |
| Capital Research Global Investors 0.02% of their portfolio | 390.7k $87.5m | Added +167.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.03% of their portfolio | 388.6k $87.0m | Added +79.1k |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO 0.08% of their portfolio | 388.2k $86.9m | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 370.3k $82.9m | Added +113.1k |
| Nuveen, LLC 0.02% of their portfolio | 354.0k $79.3m | First filing |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.22% of their portfolio | 352.8k $79.0m | Reduced -287.9k |
| Epoch Investment Partners, Inc. 0.38% of their portfolio | 329.8k $73.8m | Added +57.3k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 319.3k $71.5m | Added +44.4k |
| MILLENNIUM MANAGEMENT LLC 0.07% of their portfolio | 304.4k $68.1m | Added +84.8k |
| DEUTSCHE BANK AG\ 0.03% of their portfolio | 303.4k $67.9m | Added +42.5k |
| CITADEL ADVISORS LLC 0.06% of their portfolio | 280.7k $62.8m | Reduced -390.2k |
| Amundi 0.02% of their portfolio | 274.1k $60.3m | Reduced -57.6k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.38% of their portfolio | 268.3k $60.1m | New |
| CONGRESS ASSET MANAGEMENT CO 0.42% of their portfolio | 253.3k $56.7m | Reduced -35.8k |
| TWO SIGMA ADVISERS, LP 0.12% of their portfolio | 243.9k $54.6m | Added +237.2k |
| BNP PARIBAS FINANCIAL MARKETS 0.04% of their portfolio | 242.9k $54.4m | First filing |
| RHUMBLINE ADVISERS 0.05% of their portfolio | 236.8k $53.0m | Added +17.7k |
| Assenagon Asset Management S.A. 0.09% of their portfolio | 234.8k $52.6m | Added +135.6k |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 233.5k $52.3m | Added +11.7k |
| FEDERATED HERMES, INC. 0.11% of their portfolio | 231.8k $51.9m | Added +154.3k |
| LGT Group Foundation 0.68% of their portfolio | 221.0k $49.5m | Added +113.9k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.09% of their portfolio | 211.1k $47.3m | Reduced -31.6k |
| Swiss National Bank 0.03% of their portfolio | 204.2k $45.7m | Reduced -700 |
| BARCLAYS PLC 0.02% of their portfolio | 192.2k $43.0m | Added +51.0k |
| UBS Group AG 0.01% of their portfolio | 182.2k $40.8m | Added +30.8k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 178.2k $39.9m | Reduced -1.2k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 174.4k $39.1m | Added +6.7k |
| AMI ASSET MANAGEMENT CORP 2.28% of their portfolio | 173.8k $38.9m | Reduced -8.9k |
| MARSHALL WACE, LLP 0.05% of their portfolio | 166.1k $37.2m | Reduced -61.2k |
| Baird Financial Group, Inc. 0.07% of their portfolio | 165.7k $37.1m | Added +163.5k |
| Vest Financial, LLC 0.55% of their portfolio | 158.9k $35.6m | Reduced -12.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 154.8k $34.6m | Reduced -370.6k |
| BROWN BROTHERS HARRIMAN & CO 0.24% of their portfolio | 150.7k $33.7m | Added +55.7k |
| Freestone Grove Partners LP 0.33% of their portfolio | 143.0k $32.0m | New |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 142.9k $32.0m | Added +14.2k |
| BANK OF MONTREAL /CAN/ 0.02% of their portfolio | 140.7k $31.5m | Reduced -16.5k |
| Woodline Partners LP 0.20% of their portfolio | 138.9k $31.1m | Added +119.4k |
| EULAV Asset Management 0.76% of their portfolio | 137.6k $30.8m | Reduced -7 |
| HSBC HOLDINGS PLC 0.02% of their portfolio | 137.3k $30.7m | Reduced -3.5k |
| Pictet Asset Management Holding SA 0.03% of their portfolio | 134.4k $30.1m | Added +16.9k |
| NOMURA ASSET MANAGEMENT CO LTD 0.09% of their portfolio | 131.8k $29.5m | Reduced -8.0k |
| Point72 Asset Management, L.P. 0.08% of their portfolio | 128.3k $28.7m | Reduced -74.2k |
| Local Pensions Partnership Investment Ltd 0.56% of their portfolio | 126.4k $28.3m | Added +20.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio | 119.5k $26.5m | Added +41.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 118.3k $26.5m | Added +759 |
| Ninety One UK Ltd 0.07% of their portfolio | 112.5k $25.2m | Added +28.2k |
| Nan Shan Life Insurance Co., Ltd. 0.59% of their portfolio | 111.8k $25.0m | Reduced -4.0k |
| Saraza Management, LP 7.50% of their portfolio | 110.0k $24.6m | New |
| Ensign Peak Advisors, Inc 0.05% of their portfolio | 108.6k $24.3m | Reduced -35.2k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 108.3k $24.2m | Added +14.9k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 105.1k $23.5m | New |
| CITIGROUP INC 0.02% of their portfolio | 104.6k $23.4m | Added +49.1k |
| D. E. Shaw & Co., Inc. 0.03% of their portfolio | 103.0k $23.1m | Reduced -322.9k |
| California Public Employees Retirement System 0.01% of their portfolio | 89.7k $20.1m | Reduced -26.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 89.4k $20.0m | Reduced -991 |
| BLAIR WILLIAM & CO/IL 0.06% of their portfolio | 82.6k $18.5m | Reduced -21.3k |
| ALLIANCEBERNSTEIN L.P. 0.01% of their portfolio | 80.1k $17.9m | Reduced -2.5m |
| CANADA LIFE ASSURANCE Co 0.03% of their portfolio | 78.9k $17.7m | Added +15.0k |
| M&T Bank Corp 0.06% of their portfolio | 78.0k $17.5m | Reduced -1.5k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 75.7k $16.9m | Added +31.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 75.2k $16.8m | Reduced -19.8k |
| LPL Financial LLC 0.01% of their portfolio | 73.8k $16.5m | Added +8.0k |