Security record
WST
West Pharmaceutical Services, Inc. · Healthcare · Medical - Instruments & Supplies
162Tracked holders
+3Δ holders
50.43MShares held
$18.09BReported value
+8New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth +1.9% ·
share flow -0.1% ·
net new positions +2.5%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 162 | +3 | 50.43M | $18.09B | +8 | −4 |
| Q1 2026 | 161 | -2 | 49.75M | $12.46B | +4 | −7 |
| Q4 2025 | 162 | +3 | 53.70M | $14.74B | +5 | −1 |
| Q3 2025 | 21 | -1 | 26.99M | $7.08B | — | −2 |
| Q2 2025 | 20 | 0 | 24.84M | $5.43B | +1 | −1 |
| Q1 2025 | 17 | +2 | 8.37M | $1.87B | +2 | — |
| Q4 2024 | 15 | +2 | 8.55M | $2.80B | +2 | — |
| Q3 2024 | 12 | -1 | 4.43M | $1.33B | — | −1 |
| Q2 2024 | 13 | — | 5.33M | $1.75B | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.65M | -2.7% | $2.39B | 0.0% | ▼ Trim | 5 | SEC ↗ ×20 |
| 2 | Vanguard Capital Management Llc | 4.61M | -1.5% | $1.66B | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 3.57M | +186.0% | $1.28B | 0.1% | ▲ Add | 5 | SEC ↗ ×6 |
| 4 | State Street Global Advisors ✦ (passive) | 3.35M | +1.7% | $1.20B | 0.0% | ▲ Add | 7 | SEC ↗ |
| 5 | Artisan Partners Limited Partnership | 2.41M | -9.3% | $865.83M | 1.4% | ▼ Trim | 3 | SEC ↗ |
| 6 | Bank of New York Mellon Corp | 2.04M | -17.1% | $733.73M | 0.1% | ▼ Trim | 3 | SEC ↗ ×22 |
| 7 | Geode Capital Management ✦ (passive) | 1.90M | -0.5% | $680.55M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 8 | Morgan Stanley ✦ | 1.58M | +8.5% | $568.14M | 0.0% | ▲ Add | 4 | SEC ↗ ×19 |
| 9 | JPMorgan Chase ✦ | 1.16M | +11.6% | $413.03M | 0.0% | ▲ Add | 4 | SEC ↗ ×15 |
| 10 | Brown Advisory Inc | 1.08M | -19.8% | $386.04M | 0.6% | ▼ Trim | 3 | SEC ↗ ×4 |
| 11 | Invesco Ltd. | 1.01M | -4.4% | $362.54M | 0.0% | ▼ Trim | 3 | SEC ↗ ×17 |
| 12 | UBS AM, a distinct business unit of… | 884.87K | -2.0% | $317.67M | 0.1% | ▼ Trim | 3 | SEC ↗ ×11 |
| 13 | Norges Bank ✦ (passive) | 862.91K | New | $309.79M | 0.0% | New | 1 | SEC ↗ |
| 14 | Goldman Sachs Group ✦ | 814.77K | +12.0% | $292.50M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 15 | Kayne Anderson Rudnick Investment… | 760.62K | -11.4% | $273.06M | 0.8% | ▼ Trim | 3 | SEC ↗ ×2 |
| 16 | Td Asset Management Inc | 731.05K | -4.9% | $262.45M | 0.2% | ▼ Trim | 3 | SEC ↗ |
| 17 | Northern Trust Corp | 709.42K | -3.0% | $254.68M | 0.0% | ▼ Trim | 3 | SEC ↗ ×10 |
| 18 | Capital Research Global Investors | 609.22K | +0.9% | $218.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | ProShare Advisors LLC | 598.02K | -9.4% | $214.69M | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 20 | Charles Schwab Investment… | 583.98K | +5.3% | $209.65M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 21 | T. Rowe Price ✦ | 524.65K | -0.3% | $188.35M | 0.0% | ▼ Trim | 9 | SEC ↗ ×2 |
| 22 | Dimensional Fund Advisors Lp | 521.71K | +13.1% | $187.27M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 23 | Sei Investments Co | 497.73K | -6.0% | $178.69M | 0.2% | ▼ Trim | 3 | SEC ↗ ×3 |
| 24 | State Farm Mutual Automobile… | 495.33K | +27.6% | $177.82M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 25 | Legal & General Group Plc | 490.63K | -3.1% | $176.14M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 26 | Nuveen, LLC | 446.16K | +9.1% | $160.17M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 27 | Gates Foundation Trust ✦ | 444.50K | 0.0% | $159.58M | 0.5% | Held | 6 | SEC ↗ |
| 28 | Arrowstreet Capital ✦ | 438.72K | -14.1% | $157.50M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 29 | Royal Bank Of Canada | 434.25K | +15.0% | $155.90M | 0.0% | ▲ Add | 3 | SEC ↗ ×11 |
| 30 | Deutsche Bank Ag\ | 410.70K | -1.9% | $147.44M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 31 | Amundi | 385.31K | -40.2% | $138.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 32 | UBS Group AG | 374.36K | +35.9% | $134.40M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 33 | Citadel Advisors ✦ | 352.77K | +9.0% | $126.64M | 0.1% | ▲ Add | 9 | SEC ↗ |
| 34 | Bank Of America Corp /De/ | 350.48K | -8.2% | $125.82M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 35 | Quantinno Capital Management LP | 308.12K | +90.8% | $110.61M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 36 | Point72 Asset Management ✦ | 283.40K | +77.8% | $101.74M | 0.2% | ▲ Add | 7 | SEC ↗ |
| 37 | Holocene Advisors, LP | 275.42K | +35.3% | $98.88M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 38 | Russell Investments Group, Ltd. | 271.86K | +39.2% | $97.55M | 0.1% | ▲ Add | 3 | SEC ↗ ×17 |
| 39 | Envestnet Asset Management Inc | 259.54K | +10.2% | $93.17M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 40 | Bnp Paribas Financial Markets | 257.11K | -18.0% | $92.30M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 41 | Barclays Plc | 246.20K | -29.5% | $88.39M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 42 | Rhumbline Advisers | 239.65K | -7.5% | $86.03M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 43 | Jane Street Group, Llc | 217.58K | -28.7% | $78.11M | 0.1% | ▼ Trim | 3 | SEC ↗ ×2 |
| 44 | Swiss National Bank | 203.16K | -3.8% | $72.93M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 45 | Federated Hermes, Inc. | 197.27K | -5.2% | $70.82M | 0.1% | ▼ Trim | 3 | SEC ↗ ×4 |
| 46 | Citigroup Inc | 190.78K | +33.9% | $68.49M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 47 | Mitsubishi UFJ Asset Management… | 188.23K | +3.4% | $67.57M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 48 | Wellington Management ✦ | 175.05K | -29.6% | $62.84M | 0.0% | ▼ Trim | 9 | SEC ↗ ×8 |
| 49 | Sumitomo Mitsui Trust Group, Inc. | 168.08K | -2.7% | $60.34M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | Bamco Inc /Ny/ | 164.17K | -17.8% | $58.94M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 51 | Nomura Asset Management Co Ltd | 160.69K | -7.8% | $57.69M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 52 | Allianz Asset Management GmbH | 155.14K | -12.1% | $55.69M | 0.1% | ▼ Trim | 3 | SEC ↗ ×4 |
| 53 | BNP Paribas Asset Management… | 149.86K | +233.6% | $53.80M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 54 | Prudential Financial Inc | 143.33K | +48.7% | $51.45M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 55 | Schroder Investment Management Group | 144.45K | +7.0% | $51.23M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 56 | Hsbc Holdings Plc | 138.38K | -11.8% | $49.58M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 57 | Bank Of Montreal /Can/ | 137.75K | +8.3% | $49.45M | 0.0% | ▲ Add | 3 | SEC ↗ ×8 |
| 58 | Assenagon Asset Management S.A. | 129.51K | -5.8% | $46.49M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 59 | California Public Employees… | 127.80K | -45.1% | $45.88M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 60 | National Pension Service | 126.27K | +3080.6% | $45.33M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Wells Fargo & Company/Mn | 114.11K | +17.7% | $40.96M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 62 | First Trust Advisors Lp | 108.55K | +289.6% | $38.97M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 63 | American Century Companies Inc | 99.56K | -75.1% | $35.74M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 64 | Asset Management One Co., Ltd. | 96.32K | +28.8% | $34.57M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 65 | Ninety One UK Ltd | 93.03K | -22.0% | $33.40M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 66 | Raymond James Financial Inc | 92.07K | +11.5% | $33.05M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 67 | Creative Planning | 90.52K | +8.6% | $32.50M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 68 | Principal Financial Group Inc | 85.73K | +0.4% | $30.78M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 69 | Royal London Asset Management Ltd | 83.82K | -15.8% | $30.09M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 70 | Marshall Wace ✦ | 83.58K | +5213.3% | $30.00M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 71 | LPL Financial LLC | 67.79K | +3.0% | $24.34M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 72 | Corient Private Wealth LP | 65.76K | +10.8% | $23.61M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Fifth Third Bancorp | 65.28K | -0.1% | $23.44M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 74 | State Board Of Administration Of… | 64.48K | -1.9% | $23.15M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 75 | Aviva Plc | 63.48K | +0.1% | $22.79M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Assetmark, Inc | 62.27K | +487.5% | $22.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 77 | Aberdeen Group plc | 61.35K | -11.2% | $22.03M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 78 | Blair William & Co/Il | 61.15K | -2.1% | $21.95M | 0.1% | ▼ Trim | 3 | SEC ↗ ×2 |
| 79 | Adage Capital Partners ✦ | 59.01K | -8.1% | $21.18M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 80 | AQR Capital Management ✦ | 57.61K | -78.4% | $20.33M | 0.0% | ▼ Trim | 9 | SEC ↗ ×10 |
| 81 | Alliancebernstein L.P. | 76.36K | -12.5% | $19.14M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 82 | Credit Agricole S A | 52.69K | -20.9% | $18.91M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 83 | National Bank Of Canada /Fi/ | 51.98K | +4.7% | $18.66M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 84 | Universal- Beteiligungs- und… | 51.05K | +5.8% | $18.34M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 85 | Baird Financial Group, Inc. | 46.91K | -18.1% | $16.84M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 86 | Balyasny Asset Management L.P. | 45.77K | +3982.6% | $16.43M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 87 | State Of Wisconsin Investment Board | 43.42K | +12.7% | $15.59M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 88 | Manufacturers Life Insurance… | 43.19K | -8.8% | $15.50M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 89 | New York State Common Retirement… | 40.90K | -1.6% | $14.68M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 90 | Neuberger Berman Group LLC | 40.37K | -77.8% | $14.49M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 91 | Pictet Asset Management Holding SA | 38.20K | -13.5% | $13.72M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 92 | Ameriprise Financial Inc | 38.08K | -3.0% | $13.67M | 0.0% | ▼ Trim | 3 | SEC ↗ ×4 |
| 93 | Mitsubishi UFJ Trust & Banking Corp | 34.85K | +2.3% | $12.51M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 94 | Man Group plc | 34.67K | -56.5% | $12.45M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 95 | Chevy Chase Trust Holdings, LLC | 34.11K | -3.8% | $12.25M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 96 | Korea Investment CORP | 33.09K | -49.9% | $11.88M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 97 | Tidal Investments LLC | 32.53K | +52.5% | $11.68M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 98 | Danske Bank A/S | 32.43K | +3.8% | $11.64M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 99 | Alyeska Investment Group, L.P. | 31.00K | New | $11.13M | 0.0% | New | 1 | SEC ↗ |
| 100 | Franklin Resources Inc | 30.98K | +165.8% | $11.12M | 0.0% | ▲ Add | 3 | SEC ↗ ×9 |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $309.79M | 0.0% |
| Alyeska Investment Group, L.P. | $11.13M | 0.0% |
Exited
| Viking Global Investors | $104.50M | was 0.3% |
| Qube Research & Technologies… | $5.59M | was 0.0% |
| Mariner, LLC | $3.12M | was 0.0% |
| Connor, Clark & Lunn… | $247,632 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 749 holders, 70.07M shares, $16.37B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Sep 15
Favorite Annette F
Officer · 2.52K sh · $921,260
Sep 14
Favorite Annette F
Officer · 2.50K sh · $887,500
Sep 11
Favorite Annette F
Officer · 2.50K sh · $862,500
Sep 08
Favorite Annette F
Officer · 2.82K sh · $960,062
Sep 08
Favorite Annette F
Officer · 2.82K sh · $960,403
Sep 08
Favorite Annette F
Officer · 2.50K sh · $852,025
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Aug 06
SC 13G — FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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