WST Institutional Ownership
Top institutional (13F) holders of WST and 5%+ (13D/G) positions, sourced from SEC EDGAR.
Institutional owners
57
Institutional value
$15.53B
Top holder
BlackRock, Inc.
Top holders
| Holder | Stake | Filed | Value |
|---|---|---|---|
| BlackRock, Inc.holding company | 9.5% | Aug 7, 2026 | $2.39B |
| Vanguard Capital Managementinvestment advisor | 6.6% | Aug 13, 2026 | $1.66B |
| Vanguard Portfolio Managementinvestment advisor | 5.8% | Aug 13, 2026 | $1.44B |
| FMR LLCinvestment advisor | 5.1% | Aug 13, 2026 | $1.28B |
| STATE STREET CORPORATIONholding company | 4.8% | Sep 22, 2026 | $1.2B |
| Artisan Partners Limited Partnershipinvestment advisor | 3.5% | Aug 13, 2026 | $865.83M |
| GEODE CAPITAL MANAGEMENT, LLCinvestment advisor | 2.8% | Nov 6, 2026 | $715.18M |
| Bank of New York Mellon Corpholding company | 2.5% | Nov 5, 2026 | $644.7M |
| MORGAN STANLEYholding company | 2.3% | Aug 13, 2026 | $568.14M |
| JPMORGAN CHASE & COholding company | 1.7% | Aug 12, 2026 | $413.03M |
| BROWN ADVISORY INCinvestment advisor | 1.5% | Aug 15, 2026 | $386.04M |
| Invesco Ltd.holding company | 1.4% | Aug 14, 2026 | $362.54M |
| Norges Bankother | 1.2% | Aug 12, 2026 | $309.79M |
| GOLDMAN SACHS GROUP INCinvestment advisor | 1.2% | Aug 14, 2026 | $292.5M |
| NORTHERN TRUST CORPinvestment advisor | 1.0% | Aug 13, 2026 | $254.68M |
| Capital Research Global Investorsinvestment advisor | 0.9% | Aug 12, 2026 | $218.71M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisor | 0.8% | Aug 14, 2026 | $209.65M |
| T. Rowe Price Associates, Inc.investment advisor | 0.8% | Aug 14, 2026 | $188.35M |
| Dimensional Fund Advisors LPinvestment advisor | 0.7% | Nov 4, 2026 | $182.03M |
| GATES FOUNDATION TRUSTinvestment advisor | 0.6% | Aug 14, 2026 | $159.58M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIPinvestment advisor | 0.6% | Aug 13, 2026 | $157.5M |
| ROYAL BANK OF CANADAholding company | 0.6% | Aug 14, 2026 | $155.9M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLCinvestment advisor | 0.6% | Nov 6, 2026 | $148.11M |
| CITADEL ADVISORS LLCinvestment advisor | 0.6% | Sep 1, 2026 | $144.92M |
| UBS Group AGbank | 0.6% | Aug 13, 2026 | $141.04M |
5%+ holders
Current stakes of 5% or more from Schedule 13D and 13G filings. A joint filing shows once, under its lead filer.
| Holder | Form | Stake | Filed |
|---|---|---|---|
| BlackRock, Inc.holding company | SC 13G/A | 8.4% | Apr 24, 2025 |
| Vanguard Capital Managementinvestment advisor | SC 13G | 7.5% | Apr 30, 2026 |
| Vanguard Portfolio Managementinvestment advisor | SC 13G | 5.7% | Apr 29, 2026 |
| FMR LLCinvestment advisorwith Abigail P. Johnson | SC 13G | 5.0% | Aug 6, 2026 |
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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.