Security record · archived quarter
WST
West Pharmaceutical Services, Inc. · Healthcare · Medical - Instruments & Supplies
162Tracked holders
+3Δ holders
53.70MShares held
$14.74BReported value
+5New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +1.9% ·
share flow -0.9% ·
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 Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 162 | +3 | 50.44M | $18.07B | +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 · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 9.54M | -1.7% | $2.62B | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 9.54M | -1.7% | $2.62B | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 9.54M | -1.7% | $2.62B | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 9.54M | -1.7% | $2.62B | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 9.54M | -1.7% | $2.62B | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 6.60M | +2.2% | $1.82B | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | State Street Global Advisors ✦ (passive) | 3.25M | +1.4% | $894.76M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | Artisan Partners Limited Partnership | 2.85M | — | $784.26M | 1.2% | n/c | 1 | SEC ↗ |
| 29 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 30 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 31 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 32 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 33 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 34 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 35 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 36 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 37 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 38 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 39 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 40 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 41 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 42 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 43 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 44 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 45 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 46 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 47 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 48 | Bank of New York Mellon Corp | 2.66M | — | $732.43M | 0.1% | n/c | 1 | SEC ↗ |
| 49 | Brown Advisory Inc | 1.94M | — | $534.77M | 0.7% | n/c | 1 | SEC ↗ |
| 50 | Brown Advisory Inc | 1.94M | — | $534.77M | 0.7% | n/c | 1 | SEC ↗ |
| 51 | Brown Advisory Inc | 1.94M | — | $534.77M | 0.7% | n/c | 1 | SEC ↗ |
| 52 | Brown Advisory Inc | 1.94M | — | $534.77M | 0.7% | n/c | 1 | SEC ↗ |
| 53 | Geode Capital Management ✦ (passive) | 1.87M | +0.6% | $512.25M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 54 | Geode Capital Management ✦ (passive) | 1.87M | +0.6% | $512.25M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 63 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 70 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Morgan Stanley ✦ | 1.53M | +3.6% | $421.48M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 74 | Norges Bank ✦ (passive) | 988.74K | New | $272.04M | 0.0% | New | 1 | SEC ↗ |
| 75 | Kayne Anderson Rudnick Investment… | 955.15K | — | $262.80M | 0.7% | n/c | 1 | SEC ↗ |
| 76 | Kayne Anderson Rudnick Investment… | 955.15K | — | $262.80M | 0.7% | n/c | 1 | SEC ↗ |
| 77 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Invesco Ltd. | 908.62K | — | $250.00M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 91 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 92 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 93 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 94 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 95 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 96 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 97 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 98 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 99 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
| 100 | UBS AM, a distinct business unit of… | 905.66K | — | $249.18M | 0.1% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $272.04M | 0.0% |
Exited
| D. E. Shaw & Co. | $33.35M | 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.
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: Q4 2025 ·
Methodology ·
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