WST Institutional Ownership & Shareholders
WEST PHARMACEUTICAL SERVICES (WST) is currently held by 845 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $24.89B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of WST tracked by InsiderSet, reporting ownership valued at approximately $2.39B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.74B, representing an estimated gain of +14.94% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 47% of the total disclosed WST value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in WEST PHARMACEUTICAL SERVICES (WST).
This page ranks the largest institutional WST shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
845
Total Reported Value
$24.89B
Largest Holder
Blackrock, Inc.
Largest Position
$2.39B
Insider Transactions (90d)
10
Latest Filing Quarter
Q2 2026
New Institutional Positions
46
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.04% | 6,651,784 | $2,387,990,373 | $2,744,659,114 | +$356,668,741 | +14.94% | |
| Vanguard Capital Management Llc | 0.04% | 4,613,134 | $1,656,115,106 | $1,903,471,351 | +$247,356,245 | +14.94% | |
| Vanguard Portfolio Management Llc | 0.06% | 4,015,766 | $1,441,659,994 | $1,656,985,367 | +$215,325,373 | +14.94% | |
| Fmr Llc | 0.06% | 3,574,816 | $1,283,358,871 | $1,475,040,578 | +$191,681,707 | +14.94% | |
| State Street Corp | 0.04% | 3,348,698 | $1,202,182,582 | $1,381,739,769 | +$179,557,187 | +14.94% | |
| Artisan Partners Limited Partnership | 1.41% | 2,411,792 | $865,833,483 | $995,153,615 | +$129,320,132 | +14.94% | |
| Bank Of New York Mellon Corp | 0.12% | 2,043,823 | $733,732,610 | $843,322,246 | +$109,589,636 | +14.94% | |
| Generation Investment Management Llp | 7.08% | 2,028,322 | $728,167,598 | $836,926,224 | +$108,758,626 | +14.94% | |
| Geode Capital Management, Llc | 0.04% | 1,903,279 | $680,551,590 | $785,330,981 | +$104,779,391 | +15.40% | |
| T. Rowe Price Investment Management, Inc. | 0.42% | 1,805,019 | $648,002,000 | $744,786,940 | +$96,784,940 | +14.94% | |
| Morgan Stanley | 0.03% | 1,582,546 | $568,135,105 | $652,990,131 | +$84,855,026 | +14.94% | |
| Jpmorgan Chase & Co | 0.02% | 1,164,527 | $413,034,644 | $480,507,131 | +$67,472,487 | +16.34% | |
| Brown Advisory Inc | 0.60% | 1,075,309 | $386,042,699 | $443,694,000 | +$57,651,301 | +14.93% | |
| Longview Partners (Guernsey) Ltd | 6.03% | 1,033,826 | $371,143,534 | $426,577,284 | +$55,433,750 | +14.94% | |
| Invesco Ltd. | 0.03% | 1,009,852 | $362,536,872 | $416,685,132 | +$54,148,260 | +14.94% | |
| Norges Bank | 0.03% | 862,915 | $309,786,485 | $356,055,987 | +$46,269,502 | +14.94% | |
| Goldman Sachs Group Inc | 0.03% | 814,772 | $292,503,231 | $336,191,223 | +$43,687,992 | +14.94% | |
| Kayne Anderson Rudnick Investment Management Llc | 0.85% | 760,622 | $273,063,362 | $313,847,850 | +$40,784,488 | +14.94% | |
| Td Asset Management Inc | 0.23% | 731,054 | $262,448,386 | $301,647,501 | +$39,199,115 | +14.94% | |
| Northern Trust Corp | 0.03% | 709,421 | $254,682,139 | $292,721,293 | +$38,039,154 | +14.94% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.05% | 902,764 | $226,268,769 | $372,498,482 | +$146,229,713 | +64.63% | |
| Capital Research Global Investors | 0.03% | 609,221 | $218,710,339 | $251,376,769 | +$32,666,430 | +14.94% | |
| Van Eck Associates Corp | 0.13% | 604,754 | $217,106,686 | $249,533,595 | +$32,426,909 | +14.94% | |
| Findlay Park Partners Llp | 2.89% | 596,646 | $214,195,914 | $246,188,073 | +$31,992,159 | +14.94% | |
| Charles Schwab Investment Management Inc | 0.03% | 583,984 | $209,650,256 | $240,963,478 | +$31,313,222 | +14.94% | |
| Epoch Investment Partners, Inc. | 1.15% | 562,557 | $201,957,963 | $232,122,269 | +$30,164,306 | +14.94% | |
| Price T Rowe Associates Inc | 0.02% | 524,652 | $188,351,000 | $216,481,908 | +$28,130,908 | +14.94% | |
| Dimensional Fund Advisors Lp | 0.03% | 521,707 | $187,274,798 | $215,266,742 | +$27,991,944 | +14.95% | |
| Jacobs Levy Equity Management, Inc | 0.66% | 507,786 | $182,295,174 | $209,522,659 | +$27,227,485 | +14.94% | |
| Sei Investments Co | 0.16% | 497,734 | $178,687,081 | $205,375,003 | +$26,687,922 | +14.94% | |
| State Farm Mutual Automobile Insurance Co | 0.12% | 495,334 | $177,824,906 | $204,384,715 | +$26,559,809 | +14.94% | |
| Legal & General Group Plc | 0.04% | 490,634 | $176,137,604 | $202,445,401 | +$26,307,797 | +14.94% | |
| Proshare Advisors Llc | 0.25% | 474,984 | $176,105,068 | $195,987,898 | +$19,882,830 | +11.29% | |
| Apg Asset Management N.V. | 0.43% | 560,582 | $176,024,611 | $231,307,345 | +$55,282,734 | +31.41% | |
| Nuveen, Llc | 0.04% | 446,156 | $160,169,658 | $184,092,889 | +$23,923,231 | +14.94% | |
| Bill & Melinda Gates Foundation Trust | Bill Gates | 0.46% | 444,500 | $159,575,500 | $183,409,590 | +$23,834,090 | +14.94% |
| Arrowstreet Capital, Limited Partnership | 0.07% | 438,718 | $157,499,762 | $181,023,821 | +$23,524,059 | +14.94% | |
| Royal Bank Of Canada | 0.03% | 434,255 | $155,897,000 | $179,182,298 | +$23,285,298 | +14.94% | |
| William Blair Investment Management, Llc | 0.45% | 417,309 | $149,813,786 | $172,190,040 | +$22,376,254 | +14.94% | |
| Deutsche Bank Ag\ | 0.04% | 410,699 | $147,440,941 | $169,462,621 | +$22,021,680 | +14.94% | |
| Liontrust Investment Partners Llp | 2.12% | 402,233 | $144,401,647 | $165,969,380 | +$21,567,733 | +14.94% | |
| Vanguard Fiduciary Trust Co | 0.03% | 396,602 | $142,380,118 | $163,645,917 | +$21,265,799 | +14.94% | |
| Ubs Group Ag | 0.02% | 374,361 | $134,395,599 | $154,468,836 | +$20,073,237 | +14.94% | |
| Citadel Advisors Llc | 0.07% | 352,769 | $126,644,071 | $145,559,545 | +$18,915,474 | +14.94% | |
| Bank Of America Corp | 0.01% | 350,482 | $125,823,095 | $144,615,883 | +$18,792,788 | +14.94% | |
| Stonehage Fleming Financial Services Holdings Ltd | 4.17% | 340,263 | $122,154,417 | $140,399,319 | +$18,244,902 | +14.94% | |
| Neuberger Berman Group Llc | 0.09% | 427,512 | $117,625,549 | $176,400,001 | +$58,774,452 | +49.97% | |
| Quantinno Capital Management Lp | 0.13% | 308,116 | $110,613,883 | $127,134,824 | +$16,520,941 | +14.94% | |
| Point72 Asset Management, L.P. | 0.16% | 283,396 | $101,739,164 | $116,934,858 | +$15,195,694 | +14.94% | |
| Holocene Advisors, Lp | 0.23% | 275,421 | $98,876,139 | $113,644,213 | +$14,768,074 | +14.94% |
Frequently asked questions about WST
Who are the largest institutional holders of WST?
The largest institutional holders of WST reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, Fmr Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported WST position.
What is WST institutional ownership?
This page tracks WST positions reported by institutional investment managers through SEC Form 13F. WEST PHARMACEUTICAL SERVICES (WST) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own WST?
InsiderSet currently tracks 845 institutional managers reporting WST holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of WST shareholders.
How much WST stock do institutions own?
Institutional investment managers disclosed approximately $24.89B in WST holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was WST institutional ownership last updated?
The latest WST institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional WST holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its WST position after the reporting date.
Are institutions buying or selling WST?
Institutional buying and selling can be analyzed by comparing WST positions across consecutive 13F reporting periods. InsiderSet's WST Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View WST ownership changes.
How has WST institutional ownership changed over time?
InsiderSet tracks WST institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.