West Pharmaceutical Services, Inc. (WST) Ownership
WST ownership summary
as of October 18, 2026- Institutions
- 101.9% of shares outstanding
- Insiders
- 0.66% of shares outstanding
- Shares outstanding
- 70.4M
- Float
- 69.8M shares available to trade
- Short interest
- 3.49% 2.1M shares short
- Days to cover
- 3.47 short interest down 4.3% vs prior month
- Institutions 101.92%
- Insiders 0.66%
WST top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 9.45% | 6.7M | $2.55B | −184,930 (−2.7%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 6.55% | 4.6M | $1.77B | −70,152 (−1.5%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 5.71% | 4.0M | $1.54B | −78,243 (−1.9%) | June 30, 2026 |
| 4 | FMR Inc | 5.08% | 3.6M | $1.37B | +2.3M (+186.0%) | June 30, 2026 |
| 5 | State Street Corp | 4.76% | 3.3M | $1.29B | +54,920 (+1.7%) | June 30, 2026 |
| 6 | Artisan Partners Limited Partnership | 3.43% | 2.4M | $926.2M | −246,101 (−9.3%) | June 30, 2026 |
| 7 | Bank of New York Mellon Corp | 2.90% | 2.0M | $784.9M | −422,035 (−17.1%) | June 30, 2026 |
| 8 | Generation Investment Management LLP | 2.88% | 2.0M | $778.9M | −215,654 (−9.6%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.70% | 1.9M | $730.9M | −9,176 (−0.5%) | June 30, 2026 |
| 10 | T. Rowe Price Investment Management,Inc. | 2.56% | 1.8M | $693.2M | −535,384 (−22.9%) | June 30, 2026 |
| 11 | Morgan Stanley - Brokerage Accounts | 2.25% | 1.6M | $607.7M | +124,264 (+8.5%) | June 30, 2026 |
| 12 | Apg All Pensions Group | 1.80% | 1.3M | $486.7M | +68,277 (+5.7%) | March 31, 2026 |
| 13 | JPMorgan Chase & Co | 1.65% | 1.2M | $447.2M | +121,110 (+11.6%) | June 30, 2026 |
| 14 | Brown Advisory Holdings Inc | 1.53% | 1.1M | $412.9M | −265,568 (−19.8%) | June 30, 2026 |
| 15 | Longview Partners (Guernsey) Limited | 1.47% | 1.0M | $397.0M | −281,577 (−21.4%) | June 30, 2026 |
| 16 | Amvescap Plc. | 1.43% | 1.0M | $387.8M | −46,155 (−4.4%) | June 30, 2026 |
| 17 | UBS Asset Mgmt Americas Inc | 1.26% | 885K | $339.8M | −17,899 (−2.0%) | June 30, 2026 |
| 18 | NORGES BANK | 1.23% | 863K | $331.4M | −125,822 (−12.7%) | June 30, 2026 |
| 19 | The Goldman Sachs Group Inc | 1.16% | 815K | $312.9M | +87,155 (+12.0%) | June 30, 2026 |
| 20 | Kayne Anderson Rudnick Investment Management LLC | 1.08% | 761K | $292.1M | −97,676 (−11.4%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 6 holders added 2.8M shares and 14 cut 2.6M.
WST top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 3.19% | 2.2M | $862.1M | −4,748 (−0.2%) | August 31, 2026 |
| 2 | Vanguard 500 Index Investor | 2.62% | 1.8M | $709.3M | −29,836 (−1.6%) | September 30, 2026 |
| 3 | Vanguard MStar Mid Cap Index Instl | 2.14% | 1.5M | $578.7M | −21,163 (−1.4%) | September 30, 2026 |
| 4 | Fidelity Contrafund | 1.59% | 1.1M | $430.2M | +50,734 (+4.7%) | August 31, 2026 |
| 5 | Vanguard MStar Growth Index Investor | 1.46% | 1.0M | $393.5M | +92,012 (+9.9%) | September 30, 2026 |
| 6 | iShares Core S&P 500 ETF | 1.33% | 938K | $360.2M | −1,517 (−0.2%) | September 30, 2026 |
| 7 | Fidelity 500 Index | 1.30% | 917K | $352.2M | +3,522 (+0.4%) | August 31, 2026 |
| 8 | Strategic Advisers Fidelity US TtlStk | 1.24% | 875K | $336.0M | +172,538 (+24.6%) | August 31, 2026 |
| 9 | State Street® SPDR® S&P 500® ETF | 1.24% | 869K | $333.8M | — | September 30, 2026 |
| 10 | T. Rowe Price Mid-Cap Growth | 1.09% | 770K | $295.8M | −92,900 (−10.8%) | September 30, 2026 |
| 11 | Six Circles Mgd Eq Port US Uncons | 1.05% | 736K | $282.4M | −7,276 (−1.0%) | June 30, 2026 |
| 12 | Findlay Park American I USD Dist | 0.85% | 597K | $229.1M | — | July 31, 2026 |
| 13 | Invesco S&P 500® Equal Weight ETF | 0.83% | 581K | $223.1M | −1,235 (−0.2%) | September 30, 2026 |
| 14 | American Funds AMCAP A | 0.81% | 570K | $218.8M | — | September 30, 2026 |
| 15 | Vanguard MStar Mid Cap Growth ETF | 0.79% | 553K | $212.2M | +9,774 (+1.8%) | September 30, 2026 |
| 16 | Fidelity Select Health Care | 0.72% | 505K | $193.9M | +119,240 (+30.9%) | August 31, 2026 |
| 17 | State Street®HlthCrSelSectSPDR®ETF | 0.71% | 499K | $191.7M | +1,552 (+0.3%) | September 30, 2026 |
| 18 | ProShares S&P 500 Dividend Aristocrats | 0.65% | 459K | $176.3M | — | September 30, 2026 |
| 19 | Fidelity Select Medical Tech and Devcs | 0.57% | 400K | $153.6M | +48,000 (+13.6%) | August 31, 2026 |
| 20 | Vanguard Dividend Appreciation ETF | 0.57% | 398K | $152.9M | −1,758 (−0.4%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
WST insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-05 | Ro Khanna | Sell | $231.83 | — | — |
| 2026-01-29 | Ro Khanna | Buy | $232.20 | — | — |
| 2025-07-22 | Lisa C. McClain | Sell | $218.46 | — | — |
| 2025-06-17 | Lisa C. McClain | Buy | $218.18 | — | — |
| 2025-05-19 | Ro Khanna | Buy | $217.00 | — | — |
| 2025-04-23 | Ro Khanna | Buy | $217.48 | — | — |
| 2025-04-08 | Robert Bresnahan, Jr. | Sell | $190.12 | — | — |
| 2025-02-25 | Robert Bresnahan, Jr. | Buy | $220.34 | — | — |
| 2025-02-13 | Jared Moskowitz | Sell | $199.40 | — | — |
| 2024-11-08 | Jared Moskowitz | Sell | $323.90 | — | — |
| 2024-10-29 | Charles Witherspoon | Sell | $310.40 | 703 | $218,211 |
| 2024-08-19 | Charles Witherspoon | Sell | $300.00 | 1,029 | $308,700 |
| 2024-06-12 | Silji Abraham | Sell | $330.78 | 1,800 | $595,404 |
| 2024-05-10 | Thomas W Hofmann | Sell | $365.92 | 617 | $225,773 |
| 2024-05-07 | Eric Mark Green | Sell | $366.65 | 66,000 | $24.2M |
| 2024-03-11 | Chad Winters | Sell | $358.82 | 815 | $292,438 |
| 2024-02-28 | Charles Witherspoon | Sell | $358.62 | 2,019 | $724,054 |
| 2024-02-27 | Eric Mark Green | Sell | $359.85 | 64,132 | $23.1M |
| 2024-02-23 | Silji Abraham | Sell | $365.00 | 7,012 | $2.6M |
| 2023-12-28 | Jared Moskowitz | Buy | $354.93 | — | — |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
WST shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns WST
Institutional investors own 101.9% of West Pharmaceutical's shares and insiders 0.66%. The largest holder is BlackRock Inc with 9.45% of the shares (6.7M), as of June 30, 2026. Among the top 20 institutions, 6 added shares and 14 reduced their stake in the latest filings. Short interest is 3.49% of the float, or 3.47 days of average trading volume.
Related: WST analyst forecast, WST key metrics, WST dividend history. See the WST stock overview for the latest quote and news.
WST ownership FAQ
Who owns the most West Pharmaceutical stock?
The largest shareholders of West Pharmaceutical are BlackRock Inc (9.45%), Vanguard Capital Management, LLC (6.55%), Vanguard Portfolio Management, LLC (5.71%), FMR Inc (5.08%), State Street Corp (4.76%).
What percentage of West Pharmaceutical is owned by institutions?
Institutions hold 101.9% of West Pharmaceutical's shares outstanding; insiders hold 0.66%.
Which funds own West Pharmaceutical?
The largest fund holders of West Pharmaceutical are Vanguard MStar Total Stk Mkt Idx Invest (3.19%), Vanguard 500 Index Investor (2.62%), Vanguard MStar Mid Cap Index Instl (2.14%), Fidelity Contrafund (1.59%), Vanguard MStar Growth Index Investor (1.46%).
What is West Pharmaceutical's short interest?
2.1M shares of West Pharmaceutical were sold short, 3.49% of the float; at the average daily volume it would take 3.47 days to cover.
Are insiders buying or selling West Pharmaceutical?
Of the latest 20 reported insider transactions in West Pharmaceutical (since December 28, 2023), 6 were purchases and 14 were sales.
How many shares of West Pharmaceutical are outstanding?
West Pharmaceutical has 70.4M shares outstanding, of which 69.8M are in the public float.