WEST PHARMACEUTICAL SERVICES INC hedge fund holdings
WSTNYSE$376.76+11.78 (+3.23%)as of Oct 5, 2026
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
WST · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+40.5%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 258 | 233 | $1.4B | $1.11B | 684 | Aug 14, 2025 |
| Q3 2025 | 267 | 220 | $1.76B | $1.95B | 718 | Nov 14, 2025 |
| Q4 2025 | 249 | 217 | $1.96B | $1.98B | 755 | Feb 14, 2026 |
| Q1 2026 | 250 | 313 | $2.08B | $1.47B | 715 | May 15, 2026 |
| Q2 2026 | 345 | 224 | $2.28B | $2.87B | 784 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
784 filersNew position
128$269M+749K sh
Increased
217$2.01B+5.6M sh
Reduced
169-$2.54B-7.07M sh
Out / sold
55-$333M-927K sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| APG Asset Management N.V. | Reduce 55.77% | -$222M | $176M | 0.43% | Aug 12, 2026 |
| T. Rowe Price Investment Management, Inc. | Reduce 22.88% | -$192M | $648M | 0.42% | Aug 14, 2026 |
| William Blair Investment Management, LLC | Added 950.49% | +$136M | $150M | 0.45% | Aug 12, 2026 |
| Viking Global Investors LP | Sell 100% | -$105M | $0 | 0.00% | Aug 14, 2026 |
| Longview Partners (Guernsey) LTD | Reduce 21.41% | -$101M | $371M | 6.03% | Aug 13, 2026 |
| Worldquant Millennium Advisors LLC | Reduce 96.86% | -$93.2M | $3.02M | 0.01% | Aug 14, 2026 |
| Artisan Partners Limited Partnership | Reduce 9.26% | -$88.4M | $866M | 1.37% | Aug 13, 2026 |
| Generation Investment Management LLP | Reduce 9.61% | -$77.4M | $728M | 7.08% | Aug 10, 2026 |
| Lord, Abbett & Co. LLC | New Buy | +$65.1M | $65.1M | 0.19% | Aug 14, 2026 |
| Quantinno Capital Management LP | Added 90.81% | +$52.6M | $111M | 0.13% | Aug 13, 2026 |
| Champlain Investment Partners, LLC | Sell 100% | -$51.6M | $0 | 0.00% | Aug 12, 2026 |
| National Pension Service | Added 3080.63% | +$43.9M | $45.3M | 0.03% | Aug 13, 2026 |
| DF Dent & Co Inc | Reduce 96.23% | -$41.7M | $1.63M | 0.03% | Aug 14, 2026 |
| Canada Pension Plan Investment Board | Reduce 82.96% | -$40.3M | $8.28M | 0.00% | Aug 14, 2026 |
| Van Eck Associates Corp | Reduce 15.25% | -$39.1M | $217M | 0.13% | Aug 14, 2026 |
| State Farm Mutual Automobile Insurance Co | Added 27.58% | +$38.4M | $178M | 0.12% | Aug 12, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Added 233.57% | +$37.7M | $53.8M | 0.05% | Aug 13, 2026 |
| USS Investment Management Ltd | Added 542.18% | +$37.4M | $44.3M | 0.16% | Aug 11, 2026 |
| Kayne Anderson Rudnick Investment Management LLC | Reduce 11.38% | -$35.1M | $273M | 0.85% | Aug 13, 2026 |
| Seilern Investment Management Ltd | Reduce 38.84% | -$31.5M | $49.6M | 6.25% | Jul 8, 2026 |
| Stonehage Fleming Financial Services Holdings Ltd | Added 33.53% | +$30.7M | $122M | 4.17% | Aug 17, 2026 |
| First Trust Advisors LP | Added 289.56% | +$29M | $39M | 0.02% | Aug 11, 2026 |
| Nan Shan Life Insurance Co., Ltd. | Reduce 71.59% | -$28.2M | $11.2M | 0.35% | Aug 14, 2026 |
| Wellington Management Group LLP | Reduce 29.60% | -$26.4M | $62.8M | 0.01% | Aug 14, 2026 |
| Holocene Advisors, LP | Added 35.26% | +$25.8M | $98.9M | 0.22% | Aug 14, 2026 |
| Clough Capital Partners L P | New Buy | +$23.8M | $23.8M | 1.94% | Aug 14, 2026 |
| Liontrust Investment Partners LLP | Added 19.36% | +$23.4M | $144M | 2.12% | Aug 18, 2026 |
| Susquehanna Portfolio Strategies, LLC | Added 114.26% | +$22.8M | $42.8M | 0.68% | Aug 14, 2026 |
| Ossiam | New Buy | +$18.9M | $18.9M | 0.25% | Aug 13, 2026 |
| Vestal Point Capital, LP | Sell 100% | -$18.8M | $0 | 0.00% | Aug 14, 2026 |
| Assetmark, Inc | Added 487.46% | +$18.5M | $22.4M | 0.04% | Jul 30, 2026 |
| Healthcare of Ontario Pension Plan Trust Fund | Reduce 91.26% | -$16.6M | $1.59M | 0.00% | Aug 13, 2026 |
| Aware Super Pty Ltd as trustee of Aware Super | Sell 100% | -$15.4M | $0 | 0.00% | Jul 29, 2026 |
| Bamco Inc | Reduce 17.81% | -$12.8M | $58.9M | 0.09% | Aug 14, 2026 |
| Capitolis Liquid Global Markets LLC | New Buy | +$12.8M | $12.8M | 0.06% | Aug 13, 2026 |
| Korea Investment CORP | Reduce 49.87% | -$11.8M | $11.9M | 0.02% | Aug 12, 2026 |
| Riverbridge Partners LLC | Reduce 11.06% | -$10.4M | $83.5M | 2.33% | Jul 13, 2026 |
| Madison Asset Management, LLC | New Buy | +$9.9M | $9.9M | 0.12% | Aug 10, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | Added 6212.19% | +$9.88M | $10M | 0.01% | Aug 14, 2026 |
| Cramer Rosenthal Mcglynn LLC | New Buy | +$9.43M | $9.43M | 0.48% | Aug 13, 2026 |
| Ninety One UK Ltd | Reduce 21.97% | -$9.41M | $33.4M | 0.07% | Jul 16, 2026 |
| Wasatch Advisors LP | New Buy | +$8.86M | $8.86M | 0.06% | Jul 10, 2026 |
| Empowered Funds, LLC | Added 899.34% | +$8.77M | $9.75M | 0.05% | Aug 17, 2026 |
| Cullen/Frost Bankers, Inc. | New Buy | +$8.13M | $8.13M | 0.08% | Jul 27, 2026 |
| Capital Fund Management S.A. | Sell 100% | -$8.08M | $0 | 0.00% | Aug 13, 2026 |
| Daiichi Life Insurance Co., Ltd. | New Buy | +$7.84M | $7.84M | 0.18% | Aug 12, 2026 |
| Asset Management One Co., Ltd. | Added 28.77% | +$7.72M | $34.6M | 0.09% | Jul 28, 2026 |
| Tredje AP-fonden | Added 78.36% | +$7.67M | $17.5M | 0.08% | Aug 10, 2026 |
| PFM Health Sciences, LP | New Buy | +$7.44M | $7.44M | 0.64% | Aug 14, 2026 |
| BLI - Banque de Luxembourg Investments | Reduce 41.63% | -$7.38M | $10.4M | 0.37% | Aug 10, 2026 |
| Vest Financial, LLC | Reduce 10.04% | -$7.31M | $65.5M | 0.69% | Jul 24, 2026 |
| Findlay Park Partners LLP | Reduce 3.26% | -$7.22M | $214M | 2.89% | Aug 12, 2026 |
| LGT Group Foundation | Added 9.73% | +$7.11M | $80.2M | 0.91% | Aug 10, 2026 |
| Conestoga Capital Advisors, LLC | Reduce 15.02% | -$7.06M | $40M | 0.87% | Jul 24, 2026 |
| Nordea Investment Management AB | Reduce 46.93% | -$6.74M | $7.62M | 0.01% | Aug 5, 2026 |
| Capricorn Fund Managers Ltd | New Buy | +$6.71M | $6.71M | 0.53% | Jul 24, 2026 |
| Fisher Asset Management, LLC | Reduce 96.45% | -$6.46M | $238K | 0.00% | Aug 4, 2026 |
| Epoch Investment Partners, Inc. | Added 3.21% | +$6.29M | $202M | 1.15% | Aug 13, 2026 |
| Royal London Asset Management Ltd | Reduce 15.80% | -$5.65M | $30.1M | 0.06% | Aug 13, 2026 |
| Credit Agricole S A | Reduce 20.92% | -$5M | $18.9M | 0.04% | Aug 14, 2026 |
| Nomura Asset Management Co Ltd | Reduce 7.79% | -$4.87M | $57.7M | 0.12% | Aug 13, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 10.87% | +$4.86M | $49.6M | 0.03% | Aug 13, 2026 |
| Bridgewater Associates, LP | Reduce 54.97% | -$4.57M | $3.74M | 0.02% | Aug 14, 2026 |
| Natixis Advisors, LLC | Reduce 20.24% | -$4.55M | $17.9M | 0.02% | Aug 14, 2026 |
| Thrivent Financial for Lutherans | Reduce 22.82% | -$4.39M | $14.9M | 0.03% | Aug 14, 2026 |
| Brendel Financial Advisors LLC | New Buy | +$4.27M | $4.27M | 1.98% | Jul 31, 2026 |
| Longaeva Partners L.P. | New Buy | +$4.07M | $4.07M | 0.09% | Aug 14, 2026 |
| Elo Mutual Pension Insurance Co | New Buy | +$4.03M | $4.03M | 0.05% | Aug 13, 2026 |
| Tidal Investments LLC | Added 52.53% | +$4.02M | $11.7M | 0.02% | Aug 13, 2026 |
| Van Lanschot Kempen Investment Management N.V. | Reduce 20.79% | -$3.84M | $14.6M | 0.11% | Aug 14, 2026 |
| Alpine Peaks Capital, LP | Reduce 35.78% | -$3.84M | $6.89M | 8.07% | Aug 14, 2026 |
| Baird Financial Group, Inc. | Reduce 18.12% | -$3.73M | $16.8M | 0.02% | Aug 12, 2026 |
| Quantitative Investment Management, LLC | Sell 100% | -$3.64M | $0 | 0.00% | Aug 14, 2026 |
| Swiss Life Asset Management Ltd | Added 46.76% | +$3.64M | $11.4M | 0.05% | Jul 29, 2026 |
| PDT Partners, LLC | New Buy | +$3.35M | $3.35M | 0.18% | Aug 14, 2026 |
| Schroder Investment Management Group | Added 6.99% | +$3.35M | $51.2M | 0.04% | Aug 13, 2026 |
| Motley Fool Wealth Management, LLC | Sell 100% | -$3.34M | $0 | 0.00% | Aug 6, 2026 |
| Donoghue Forlines LLC | New Buy | +$3.27M | $3.27M | 0.85% | Aug 7, 2026 |
| Public Employees Retirement Association of Colorado | Added 17.87% | +$3.12M | $20.6M | 0.07% | Aug 11, 2026 |
| ING Groep NV | New Buy | +$3.12M | $3.12M | 0.02% | Aug 13, 2026 |
| Tobam | Reduce 57.24% | -$3.1M | $2.31M | 0.56% | Jul 31, 2026 |
| Handelsbanken Fonder AB | Reduce 14.78% | -$3.06M | $17.7M | 0.05% | Jul 10, 2026 |
| Twin Capital Management Inc | New Buy | +$3.06M | $3.06M | 0.33% | Aug 6, 2026 |
| Prudential PLC | Reduce 60.06% | -$2.89M | $1.92M | 0.01% | Aug 14, 2026 |
| Local Pensions Partnership Investment Ltd | Added 6.62% | +$2.87M | $46.3M | 0.97% | Jul 30, 2026 |
| Genus Capital Management Inc. | New Buy | +$2.79M | $2.79M | 0.27% | Jul 29, 2026 |
| Aberdeen Group plc | Reduce 11.18% | -$2.77M | $22M | 0.03% | Jul 31, 2026 |
| Mn Services Vermogensbeheer B.V. | Reduce 26.99% | -$2.76M | $7.48M | 0.06% | Jul 31, 2026 |
| Ami Asset Management Corp | Reduce 4.95% | -$2.74M | $52.7M | 3.03% | Jul 21, 2026 |
| Cinctive Capital Management LP | New Buy | +$2.73M | $2.73M | 0.10% | Aug 14, 2026 |
| Azzad Asset Management Inc | Reduce 78.01% | -$2.67M | $753K | 0.07% | Jul 29, 2026 |
| Cibc World Market Inc. | Added 71.54% | +$2.51M | $6.03M | 0.01% | Aug 13, 2026 |
| Mediolanum International Funds Ltd | Added 37.96% | +$2.44M | $8.86M | 0.08% | Jul 23, 2026 |
| Illinois Municipal Retirement Fund | Reduce 36.99% | -$2.4M | $4.09M | 0.05% | Aug 12, 2026 |
| Unisphere Establishment | Reduce 21.36% | -$2.26M | $8.33M | 0.07% | Aug 14, 2026 |
| Fox Run Management, L.L.C. | Sell 100% | -$2.22M | $0 | 0.00% | Aug 4, 2026 |
| Mitsubishi UFJ Asset Management Co., Ltd. | Added 3.38% | +$2.21M | $67.6M | 0.04% | Aug 7, 2026 |
| BI Asset Management Fondsmaeglerselskab A/S | Added 378.27% | +$2.16M | $2.73M | 0.02% | Aug 10, 2026 |
| Pictet Asset Management Holding SA | Reduce 13.54% | -$2.15M | $13.7M | 0.01% | Jul 30, 2026 |
| Grantham, Mayo, Van Otterloo & Co. LLC | New Buy | +$2.03M | $2.03M | 0.00% | Aug 13, 2026 |