West Pharmaceutical Services Inc
WST- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000105770
In the last 90 days, West Pharmaceutical Services Inc insiders filed 0 open-market purchases and 2 sales; 834 institutions reported holding it in 13F filings for Q2 2026, worth $25.2B in total; Gates Foundation Trust is the only superinvestor holding it.
13F holders, Q1 2026
Institutional positions in West Pharmaceutical Services Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 755
- −37 vs. Q4 2025
- Shares held
- 71.1M
- +12.2M (+20.8%) vs. Q4 2025
- Total value
- $17.8B
- +$1.62B (+10.0%) vs. Q4 2025
- New holders
- 89
- 265 more added
- Sold out
- 126
- 281 more reduced
12 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting WST on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 834 | $25.2B |
| Q1 2026 | 755 | $17.8B |
| Q4 2025 | 804 | $19.1B |
| Q3 2025 | 758 | $18.0B |
| Q2 2025 | 733 | $15.3B |
| Q1 2025 | 715 | $15.6B |
| Q4 2024 | 747 | $22.9B |
| Q3 2024 | 733 | $20.5B |
| Q2 2024 | 778 | $22.4B |
| Q1 2024 | 778 | $27.0B |
| Q4 2023 | 784 | $24.1B |
| Q3 2023 | 759 | $25.8B |
| Q2 2023 | 735 | $26.0B |
| Q1 2023 | 698 | $24.0B |
| Q4 2022 | 638 | $16.3B |
| Q3 2022 | 638 | $16.9B |
| Q2 2022 | 657 | $20.6B |
| Q1 2022 | 718 | $28.2B |
| Q4 2021 | 731 | $32.2B |
| Q3 2021 | 672 | $28.5B |
| Q2 2021 | 641 | $24.7B |
| Q1 2021 | 591 | $19.3B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding West Pharmaceutical Services Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Winton Group Ltd | 33,422 | $8.38M | 0.29% | +33,422 | New |
| Mitsubishi UFJ Trust & Banking Corp | 34,074 | $8.54M | 0.02% | −433−1.3% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 35,443 | $8.88M | 0.03% | −1,032−2.8% | Reduced |
| Vanguard Investments Australia, Ltd. | 35,687 | $8.94M | 0.03% | +35,687 | New |
| Fred Alger Management, LLC | 35,942 | $9.01M | 0.04% | −12,182−25.3% | Reduced |
| Stifel Financial Corp | 36,370 | $9.12M | 0.01% | +1,444+4.1% | Added |
| Nisa Investment Advisors, LLC | 36,753 | $9.21M | 0.03% | −1,195−3.1% | Reduced |
| McCollum Christoferson Group LLC | 65,606 | $9.63M | 2.89% | +24,520+59.7% | Added |
| State of Wisconsin Investment Board | 38,527 | $9.66M | 0.02% | −11,089−22.3% | Reduced |
| Ameriprise Financial Inc | 39,255 | $9.81M | 0.00% | +18,201+86.4% | Added |
| William Blair Investment Management, LLC | 39,725 | $9.96M | 0.03% | −1,517−3.7% | Reduced |
| Nordea Investment Management AB | 40,678 | $10.0M | 0.01% | +25,728+172.1% | Added |
| GW&K Investment Management, LLC | 40,704 | $10.2M | 0.09% | −737−1.8% | Reduced |
| New York State Common Retirement Fund | 41,547 | $10.4M | 0.01% | 00.0% | Unchanged |
| Grace & White Inc | 43,530 | $10.9M | 1.93% | 00.0% | Unchanged |
| Vident Advisory, LLC | 43,604 | $10.9M | 0.09% | −10,091−18.8% | Reduced |
| Taproot Management LP | 43,673 | $10.9M | 2.07% | −1,085−2.4% | Reduced |
| Pictet Asset Management Holding SA | 44,190 | $11.1M | 0.01% | −107,807−70.9% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 44,927 | $11.3M | 0.01% | −1,799−3.9% | Reduced |
| Manufacturers Life Insurance Company, The | 47,358 | $11.9M | 0.01% | −23,094−32.8% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 48,259 | $12.1M | 0.02% | +4,300+9.8% | Added |
| Public Employees Retirement Association of Colorado | 48,695 | $12.2M | 0.05% | 00.0% | Unchanged |
| National Bank of Canada | 49,636 | $12.4M | 0.01% | +1,896+4.0% | Added |
| Great West Life Assurance Co | 50,296 | $12.7M | 0.02% | +2,073+4.3% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 50,520 | $12.7M | 0.02% | +47,676+1,676.4% | Added |
| Kempen Capital Management N.V. | 51,501 | $12.9M | 0.11% | −3,014−5.5% | Reduced |
| Thrivent Financial for Lutherans | 53,639 | $13.4M | 0.03% | +7,547+16.4% | Added |
| BLI - Banque de Luxembourg Investments | 49,900 | $13.6M | 0.41% | 00.0% | Unchanged |
| Andra AP-fonden | 55,007 | $13.8M | 0.17% | +48,327+723.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 55,701 | $14.0M | 0.21% | −50,750−47.7% | Reduced |
| Baird Financial Group, Inc. | 57,287 | $14.4M | 0.02% | −88,919−60.8% | Reduced |
| Handelsbanken Fonder AB | 57,728 | $14.5M | 0.05% | −5,526−8.7% | Reduced |
| CI Private Wealth, LLC | 59,329 | $14.8M | 0.02% | +30,979+109.3% | Added |
| New York State Teachers Retirement System | 60,523 | $15.2M | 0.03% | +1,690+2.9% | Added |
| Los Angeles Capital Management LLC | 60,705 | $15.2M | 0.06% | +17,794+41.5% | Added |
| Aware Super Pty Ltd as trustee of Aware Super | 61,501 | $15.4M | 0.23% | +61,501 | New |
| North Growth Management Ltd. | 62,000 | $15.6M | 2.38% | +23,000+59.0% | Added |
| Blair William & Co | 62,466 | $15.7M | 0.04% | +150+0.2% | Added |
| Natixis Advisors, L.P. | 62,572 | $15.7M | 0.02% | +10,268+19.6% | Added |
| Aviva PLC | 63,386 | $15.9M | 0.03% | +1,700+2.8% | Added |
| Adage Capital Partners GP, L.L.C. | 64,207 | $16.1M | 0.02% | −700−1.1% | Reduced |
| Bank of Nova Scotia | 65,323 | $16.4M | 0.03% | +50,402+337.8% | Added |
| Fifth Third Bancorp | 65,346 | $16.4M | 0.03% | +55,934+594.3% | Added |
| Tudor Investment Corp Et Al | 65,415 | $16.4M | 0.09% | +24,745+60.8% | Added |
| State Board of Administration of Florida Retirement System | 65,712 | $16.5M | 0.03% | −270.0% | Reduced |
| LPL Financial LLC | 65,853 | $16.5M | 0.00% | −7,988−10.8% | Reduced |
| Korea Investment CORP | 66,003 | $16.5M | 0.03% | −44,967−40.5% | Reduced |
| Credit Agricole S A | 66,626 | $16.7M | 0.05% | −22,363−25.1% | Reduced |
| Standard Life Aberdeen plc | 69,076 | $17.3M | 0.03% | +3,448+5.3% | Added |
| RMB Capital Management, LLC | 72,166 | $18.1M | 0.32% | −367−0.5% | Reduced |
| Asset Management One Co.,Ltd. | 74,797 | $18.7M | 0.06% | −50,207−40.2% | Reduced |
| Vestal Point Capital, LP | 75,000 | $18.8M | 0.53% | +75,000 | New |
| Teacher Retirement System of Texas | 76,525 | $19.2M | 0.08% | +38,368+100.6% | Added |
| Man Group plc | 79,649 | $20.0M | 0.04% | +12,321+18.3% | Added |
| Raymond James Financial Inc | 82,559 | $20.7M | 0.01% | −19,889−19.4% | Reduced |
| Creative Planning | 83,372 | $20.9M | 0.01% | +3,870+4.9% | Added |
| Principal Financial Group Inc | 85,363 | $21.4M | 0.01% | −270−0.3% | Reduced |
| Alliancebernstein L.P. | 87,301 | $24.0M | 0.01% | +7,258+9.1% | Added |
| Prudential Financial Inc | 96,412 | $24.2M | 0.03% | −66,679−40.9% | Reduced |
| Wells Fargo & Company | 96,974 | $24.3M | 0.00% | −9,737−9.1% | Reduced |
| Royal London Asset Management Ltd | 99,550 | $25.0M | 0.05% | +7,136+7.7% | Added |
| Nan Shan Life Insurance Co., Ltd. | 109,867 | $27.5M | 1.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 110,634 | $27.7M | 0.03% | −2,936−2.6% | Reduced |
| SG Americas Securities, LLC | 114,044 | $28.6M | 0.03% | +13,135+13.0% | Added |
| Ninety One UK Ltd | 119,231 | $29.9M | 0.07% | +17,343+17.0% | Added |
| DF Dent & Co Inc | 120,597 | $30.2M | 0.58% | −198,985−62.3% | Reduced |
| Local Pensions Partnership Investment Ltd | 120,880 | $30.3M | 0.66% | 00.0% | Unchanged |
| Vanguard Asset Management, Ltd | 124,642 | $31.2M | 0.03% | +124,642 | New |
| Bank of Montreal | 127,174 | $31.9M | 0.01% | −5,475−4.1% | Reduced |
| Conestoga Capital Advisors, LLC | 130,970 | $32.8M | 0.66% | +8,179+6.7% | Added |
| Schroder Investment Management Group | 135,006 | $33.1M | 0.03% | −44,167−24.7% | Reduced |
| Canada Pension Plan Investment Board | 135,370 | $33.9M | 0.02% | +20,960+18.3% | Added |
| Assenagon Asset Management S.A. | 137,561 | $34.5M | 0.06% | −113,445−45.2% | Reduced |
| Citigroup Inc | 142,434 | $35.7M | 0.02% | −3,222−2.2% | Reduced |
| Ami Asset Management Corp | 154,401 | $38.7M | 2.47% | −4,638−2.9% | Reduced |
| HSBC Holdings PLC | 156,895 | $39.3M | 0.02% | +10,023+6.8% | Added |
| Vanguard Global Advisers, LLC | 157,737 | $39.5M | 0.02% | +157,737 | New |
| Point72 Asset Management, L.P. | 159,350 | $39.9M | 0.07% | −75,687−32.2% | Reduced |
| Birch Hill Investment Advisors LLC | 161,159 | $40.4M | 1.81% | +9,011+5.9% | Added |
| Quantinno Capital Management LP | 161,478 | $40.5M | 0.07% | +56,072+53.2% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 172,780 | $43.3M | 0.03% | −3,336−1.9% | Reduced |
| Nomura Asset Management Co Ltd | 174,262 | $43.7M | 0.11% | +19,760+12.8% | Added |
| Allianz Asset Management GmbH | 176,560 | $44.3M | 0.05% | +152,310+628.1% | Added |
| Neuberger Berman Group LLC | 181,853 | $45.6M | 0.03% | −245,659−57.5% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 182,085 | $45.6M | 0.03% | +14,882+8.9% | Added |
| Russell Investments Group, Ltd. | 195,332 | $48.9M | 0.05% | +23,230+13.5% | Added |
| Bamco Inc | 199,750 | $50.1M | 0.15% | −63,439−24.1% | Reduced |
| CBOE Vest Financial, LLC | 202,948 | $50.9M | 0.61% | +24,869+14.0% | Added |
| LGT Group Foundation | 203,556 | $51.0M | 0.62% | −1,531−0.7% | Reduced |
| Holocene Advisors, LP | 203,621 | $51.0M | 0.12% | +75,904+59.4% | Added |
| Champlain Investment Partners, LLC | 205,979 | $51.6M | 0.66% | −269,376−56.7% | Reduced |
| Federated Hermes, Inc. | 208,161 | $52.2M | 0.08% | +8,095+4.0% | Added |
| Renaissance Technologies LLC | 209,660 | $52.5M | 0.08% | +104,924+100.2% | Added |
| Swiss National Bank | 211,160 | $52.9M | 0.03% | +14,120+7.2% | Added |
| Two Sigma Investments, LP | 225,631 | $56.6M | 0.05% | +85,692+61.2% | Added |
| Seilern Investment Management Ltd | 226,021 | $56.6M | 6.76% | −52,208−18.8% | Reduced |
| Border to Coast Pensions Partnership Ltd | 226,857 | $57.0M | 0.96% | −9,450−4.0% | Reduced |
| Brown Brothers Harriman & Co | 228,415 | $57.2M | 0.31% | −12,276−5.1% | Reduced |
| California Public Employees Retirement System | 232,917 | $58.4M | 0.04% | +109,581+88.8% | Added |
| Envestnet Asset Management Inc | 235,521 | $59.0M | 0.02% | −12,591−5.1% | Reduced |