West Pharmaceutical ServicesWST
13F holders, Q1 2026 (March 31)755holders −49
78new positions
124sold out
13famous investors
$249.88avg. 13F price*
At the end of Q1 2026, 755 institutions reported holding West Pharmaceutical Services (WST) in their 13F filings, down 49 from Q4 2025. 78 opened new positions and 124 sold out. The largest holders were BlackRock, Inc. ($1.7B), Vanguard Capital Management LLC ($1.2B) and Vanguard Portfolio Management LLC ($1.0B). 13 famous investors held it, including Bill Gates / Michael Larson (0.4% of Gates Foundation Trust's portfolio), Andreas Halvorsen (0.3% of Viking Global Investors's portfolio) and Ron Baron (0.2% of Baron Capital (BAMCO)'s portfolio).
- Company
- West Pharmaceutical Services
- Sector
- Health Care
- CUSIP
- 955306105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 78 | $289.3M |
| Exits | 124 | $451.7M |
All 13F filers, Q4 2025 → Q1 2026: 9,693,572 shares bought and 7,060,452 shares sold, net +2,633,120 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 755 holders
| BlackRock, Inc. | 0.03% | Add +3.6% | 6,836,714 | $1.7B |
| Vanguard Capital Management LLC | 0.03% | — | 4,683,286 | $1.2B |
| Vanguard Portfolio Management LLC | 0.05% | — | 4,094,009 | $1.0B |
| State Street Corp. | 0.03% | Add +1.3% | 3,293,778 | $825.6M |
| Artisan Partners Limited Partnership | 1.09% | Reduce -6.8% | 2,657,893 | $666.2M |
| Bank of New York Mellon Corp | 0.11% | Reduce -7.4% | 2,465,858 | $618.0M |
| T. Rowe Price Investment Management, Inc. | 0.40% | Add +99.2% | 2,340,403 | $586.6M |
| Generation Investment Management LLP | 5.04% | Add +43.7% | 2,243,976 | $562.4M |
| Geode Capital Management, LLC | 0.03% | Add +2.3% | 1,912,455 | $477.5M |
| Morgan Stanley | 0.02% | Reduce -4.8% | 1,458,282 | $365.5M |
| Brown Advisory Inc. | 0.55% | Reduce -31.0% | 1,340,877 | $336.1M |
| Longview Partners (Guernsey) LTD | 4.67% | Add +16.3% | 1,315,403 | $329.7M |
| FMR LLC | 0.02% | Add +1039.7% | 1,249,748 | $313.2M |
| APG Asset Management N.V. | 0.87% | Add +5.7% | 1,267,282 | $275.7M |
| Invesco Ltd. | 0.03% | Add +16.2% | 1,056,007 | $264.7M |
| JPMorgan Chase & Co. | 0.02% | Add +279.5% | 1,043,417 | $255.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Reduce -0.3% | 902,764 | $226.3M |
| Kayne Anderson Rudnick Investment Management LLC | 0.63% | Reduce -10.1% | 858,298 | $215.1M |
| TD Asset Management Inc | 0.16% | Add +26.9% | 768,953 | $192.7M |
| Northern Trust Corp. | 0.02% | Add +0.7% | 731,283 | $183.3M |
| Goldman Sachs Group Inc. | 0.02% | Add +65.3% | 727,617 | $182.4M |
| Van Eck Associates Corp. | 0.14% | Reduce -0.3% | 713,579 | $178.9M |
| Jacobs Levy Equity Management, Inc. | 0.74% | Add +10.3% | 705,336 | $176.8M |
| ProShare Advisors LLC | 0.24% | Add +12.5% | 660,084 | $165.4M |
| Amundi | 0.04% | Add +85.4% | 644,065 | $161.4M |
| Findlay Park Partners LLP | 2.15% | Reduce -7.5% | 616,766 | $154.6M |
| Capital Research Global Investors | 0.02% | New | 604,011 | $151.4M |
| Charles Schwab Investment Management Inc. | 0.02% | Add +2.1% | 554,332 | $138.9M |
| Epoch Investment Partners, Inc. | 0.83% | Add +7.9% | 545,050 | $136.6M |
| Sei Investments Co. | 0.12% | Reduce -10.6% | 529,261 | $132.7M |
| T. Rowe Price Associates Inc. | 0.02% | Add +55.1% | 526,383 | $131.9M |
| Arrowstreet Capital, Limited Partnership | 0.07% | Add +69.9% | 510,516 | $128.0M |
| Legal & General Group Plc | 0.03% | Add +0.8% | 506,458 | $126.9M |
| Dimensional Fund Advisors LP | 0.02% | Add +5.5% | 461,462 | $115.6M |
| Gates Foundation Trust | 0.35% | No change | 444,500 | $111.4M |
| Deutsche Bank AG | 0.03% | Add +12.3% | 418,854 | $105.0M |
| Viking Global Investors | 0.29% | Add +41.3% | 416,948 | $104.5M |
| Nuveen, LLC | 0.03% | Add +1.1% | 408,990 | $102.5M |
| Vanguard Fiduciary Trust Co. | 0.03% | — | 405,104 | $101.5M |
| American Century Companies Inc. | 0.05% | Reduce -10.3% | 399,700 | $100.2M |
| State Farm Mutual Automobile Insurance Co. | 0.08% | No change | 388,239 | $97.3M |
| Bank of America Corp. | 0.01% | Reduce -28.2% | 381,813 | $95.7M |
| Royal Bank of Canada | 0.02% | Reduce -15.1% | 377,552 | $94.6M |
| Barclays PLC | 0.03% | Add +145.5% | 349,104 | $87.5M |
| Liontrust Investment Partners LLP | 1.44% | Reduce -8.0% | 336,995 | $84.5M |
| Citadel Advisors | 0.06% | Add +31.7% | 323,587 | $81.1M |
| BNP Paribas Financial Markets | 0.05% | Add +47.0% | 313,594 | $78.6M |
| Jane Street Group, LLC | 0.08% | Add +38.9% | 305,132 | $76.5M |
| UBS Group AG | 0.01% | Add +10.0% | 275,508 | $69.1M |
| Worldquant Millennium Advisors LLC | 0.26% | Add +1789.0% | 268,107 | $67.2M |
| AQR Capital Management | 0.03% | Reduce -48.4% | 266,944 | $66.5M |
| Riverbridge Partners LLC | 1.60% | Reduce -17.9% | 261,442 | $65.5M |
| Rhumbline Advisers | 0.06% | Reduce -4.8% | 259,227 | $65.0M |
| Stonehage Fleming Financial Services Holdings Ltd | 2.32% | New | 254,817 | $63.9M |
| Wellington Management Group LLP | 0.01% | Add +1467.7% | 248,636 | $62.3M |
| Envestnet Asset Management Inc. | 0.02% | Reduce -5.1% | 235,521 | $59.0M |
| California Public Employees Retirement System | 0.04% | Add +88.8% | 232,917 | $58.4M |
| Brown Brothers Harriman & Co. | 0.31% | Reduce -5.1% | 228,415 | $57.2M |
| Border to Coast Pensions Partnership Ltd | 0.96% | Reduce -4.0% | 226,857 | $57.0M |
| Seilern Investment Management Ltd | 6.76% | Reduce -18.8% | 226,021 | $56.6M |
| Two Sigma Investments, LP | 0.05% | Add +61.2% | 225,631 | $56.6M |
| Swiss National Bank | 0.03% | Add +7.2% | 211,160 | $52.9M |
| Renaissance Technologies | 0.08% | Add +100.2% | 209,660 | $52.5M |
| Federated Hermes, Inc. | 0.08% | Add +4.0% | 208,161 | $52.2M |
| Champlain Investment Partners, LLC | 0.66% | Reduce -56.7% | 205,979 | $51.6M |
| Holocene Advisors, LP | 0.12% | Add +59.4% | 203,621 | $51.0M |
| LGT Group Foundation | 0.62% | Reduce -0.8% | 203,556 | $51.0M |
| Vest Financial, LLC | 0.61% | Add +14.0% | 202,948 | $50.9M |
| Baron Capital (BAMCO) | 0.15% | Reduce -24.1% | 199,750 | $50.1M |
| Russell Investments Group, Ltd. | 0.05% | Add +13.5% | 195,332 | $48.9M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Add +8.9% | 182,085 | $45.6M |
| Neuberger Berman Group LLC | 0.03% | Reduce -57.5% | 181,853 | $45.6M |
| Allianz Asset Management GmbH | 0.05% | Add +628.1% | 176,560 | $44.3M |
| Nomura Asset Management Co. Ltd. | 0.11% | Add +12.8% | 174,262 | $43.7M |
| Sumitomo Mitsui Trust Group, Inc. | 0.03% | Reduce -1.9% | 172,780 | $43.3M |
| Quantinno Capital Management LP | 0.07% | Add +53.2% | 161,478 | $40.5M |
| Birch Hill Investment Advisors LLC | 1.81% | Add +5.9% | 161,159 | $40.4M |
| Point72 Asset Management | 0.07% | Reduce -32.2% | 159,350 | $39.9M |
| Vanguard Global Advisers, LLC | 0.02% | — | 157,737 | $39.5M |
| HSBC Holdings PLC | 0.02% | Add +6.8% | 156,895 | $39.3M |
| Ami Asset Management Corp. | 2.47% | Reduce -2.9% | 154,401 | $38.7M |
| Citigroup Inc. | 0.02% | Reduce -2.2% | 142,434 | $35.7M |
| Assenagon Asset Management S.A. | 0.06% | Reduce -45.2% | 137,561 | $34.5M |
| Canada Pension Plan Investment Board | 0.02% | Add +18.3% | 135,370 | $33.9M |
| Schroder Investment Management Group | 0.03% | Reduce -24.6% | 135,006 | $33.1M |
| Conestoga Capital Advisors, LLC | 0.66% | Add +6.7% | 130,970 | $32.8M |
| Bank of Montreal | 0.01% | Reduce -4.1% | 127,174 | $31.9M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.03% | — | 124,642 | $31.2M |
| Local Pensions Partnership Investment Ltd | 0.66% | No change | 120,880 | $30.3M |
| DF Dent & Co. Inc. | 0.58% | Reduce -62.3% | 120,597 | $30.2M |
| Ninety One UK Ltd | 0.07% | Add +17.0% | 119,231 | $29.9M |
| SG Americas Securities, LLC | 0.03% | Add +13.0% | 114,044 | $28.6M |
| California State Teachers Retirement System | 0.03% | Reduce -2.6% | 110,634 | $27.7M |
| Nan Shan Life Insurance Co., Ltd. | 1.00% | No change | 109,867 | $27.5M |
| Royal London Asset Management Ltd. | 0.05% | Add +7.7% | 99,550 | $25.0M |
| Wells Fargo & Company | 0.00% | Reduce -9.1% | 96,974 | $24.3M |
| Prudential Financial Inc. | 0.03% | Reduce -40.9% | 96,412 | $24.2M |
| Alliancebernstein L.P. | 0.01% | Add +9.1% | 87,301 | $24.0M |
| Principal Financial Group Inc. | 0.01% | Reduce -0.3% | 85,363 | $21.4M |
| Creative Planning | 0.01% | Add +4.9% | 83,372 | $20.9M |
"% of holder's portfolio" is WST's weight in each manager's 13F, not the share of West Pharmaceutical Services the manager owns.