WST West Pharmaceutical Services, Inc.
West Pharmaceutical Services, Inc. (WST) Institutional Ownership
What the institutions did with WST last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 6.7M | 9.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.6M | 6.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.0M | 5.7% |
| FMR LLC | 3.6M | 5.1% |
| STATE STREET CORP | 3.3M | 4.7% |
| Artisan Partners Limited Partnership | 2.4M | 3.4% |
| Bank of New York Mellon Corp | 2.0M | 2.9% |
| GENERATION INVESTMENT MANAGEMENT LLP | 2.0M | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9M | 2.7% |
| T. Rowe Price Investment Management, Inc. | 1.8M | 2.6% |
| MORGAN STANLEY | 1.6M | 2.2% |
| JPMORGAN CHASE & CO | 1.2M | 1.7% |
| BROWN ADVISORY INC | 1.1M | 1.5% |
| Longview Partners (Guernsey) LTD | 1.0M | 1.5% |
| Invesco Ltd. | 1.0M | 1.4% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 884.9K | 1.3% |
| NORGES BANK | 862.9K | 1.2% |
| GOLDMAN SACHS GROUP INC | 814.8K | 1.2% |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 760.6K | 1.1% |
| TD Asset Management Inc | 731.1K | 1.0% |
| NORTHERN TRUST CORP | 709.4K | 1.0% |
| Capital Research Global Investors | 609.2K | 0.9% |
| VAN ECK ASSOCIATES CORP | 604.8K | 0.9% |
| ProShare Advisors LLC | 598.0K | 0.8% |
| Findlay Park Partners LLP | 596.6K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Increased | 1.2M | 3.6M | +2.3M |
| APG Asset Management N.V. | Reduced | 1.3M | 560.6K | -706.7K |
| T. Rowe Price Investment Management, Inc. | Reduced | 2.3M | 1.8M | -535.4K |
| Bank of New York Mellon Corp | Reduced | 2.5M | 2.0M | -422.0K |
| VIKING GLOBAL INVESTORS LP | Sold Out | 416.9K | 0 | -416.9K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Increased | 39.7K | 417.3K | +377.6K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 399.7K | 99.6K | -300.1K |
| Longview Partners (Guernsey) LTD | Reduced | 1.3M | 1.0M | -281.6K |
| BROWN ADVISORY INC | Reduced | 1.3M | 1.1M | -265.6K |
| WORLDQUANT MILLENNIUM ADVISORS LLC | Reduced | 268.1K | 8.4K | -259.7K |
| Amundi | Reduced | 644.1K | 385.3K | -258.8K |
| Artisan Partners Limited Partnership | Reduced | 2.7M | 2.4M | -246.1K |
| GENERATION INVESTMENT MANAGEMENT LLP | Reduced | 2.2M | 2.0M | -215.7K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 266.9K | 57.6K | -209.3K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 225.6K | 18.2K | -207.4K |
| Champlain Investment Partners, LLC | Sold Out | 206.0K | 0 | -206.0K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 705.3K | 507.8K | -197.6K |
| BlackRock, Inc. | Reduced | 6.8M | 6.7M | -184.9K |
| LORD, ABBETT & CO. LLC | New | 0 | 181.4K | +181.4K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 209.7K | 30.9K | -178.8K |
| Quantinno Capital Management LP | Increased | 161.5K | 308.1K | +146.6K |
| NEUBERGER BERMAN GROUP LLC | Reduced | 181.9K | 40.4K | -141.5K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Increased | 60.7K | 186.3K | +125.6K |
| MORGAN STANLEY | Increased | 1.5M | 1.6M | +124.3K |
| Point72 Asset Management, L.P. | Increased | 159.4K | 283.4K | +124.0K |
| National Pension Service | Increased | 4.0K | 126.3K | +122.3K |
| JPMORGAN CHASE & CO | Increased | 1.0M | 1.2M | +121.1K |
| DF DENT & CO INC | Reduced | 120.6K | 4.6K | -116.0K |
| CANADA PENSION PLAN INVESTMENT BOARD | Reduced | 135.4K | 23.1K | -112.3K |
| VAN ECK ASSOCIATES CORP | Reduced | 713.6K | 604.8K | -108.8K |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO | Increased | 388.2K | 495.3K | +107.1K |
| California Public Employees Retirement System | Reduced | 232.9K | 127.8K | -105.1K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Increased | 44.9K | 149.9K | +104.9K |
| USS Investment Management Ltd | Increased | 19.2K | 123.3K | +104.1K |
| BARCLAYS PLC | Reduced | 349.1K | 246.2K | -102.9K |
| SG Americas Securities, LLC | Reduced | 114.0K | 13.2K | -100.9K |
| UBS Group AG | Increased | 275.5K | 374.4K | +98.9K |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | Reduced | 858.3K | 760.6K | -97.7K |
| Seilern Investment Management Ltd | Reduced | 226.0K | 138.2K | -87.8K |
| JANE STREET GROUP, LLC | Reduced | 305.1K | 217.6K | -87.6K |
| Candriam S.C.A. | Increased | 9.1K | 96.3K | +87.2K |
| GOLDMAN SACHS GROUP INC | Increased | 727.6K | 814.8K | +87.2K |
| Stonehage Fleming Financial Services Holdings Ltd | Increased | 254.8K | 340.3K | +85.4K |
| MARSHALL WACE, LLP | Increased | 1.6K | 83.6K | +82.0K |
| Boston Trust Walden Corp | New | 0 | 81.2K | +81.2K |
| FIRST TRUST ADVISORS LP | Increased | 27.9K | 108.5K | +80.7K |
| Nan Shan Life Insurance Co., Ltd. | Reduced | 109.9K | 31.2K | -78.7K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 4.1M | 4.0M | -78.2K |
| Russell Investments Group, Ltd. | Increased | 195.3K | 271.9K | +76.5K |
| Vestal Point Capital, LP | Sold Out | 75.0K | 0 | -75.0K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 248.6K | 175.1K | -73.6K |
| Holocene Advisors, LP | Increased | 203.6K | 275.4K | +71.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 510.5K | 438.7K | -71.8K |
| ORBIMED ADVISORS LLC | New | 0 | 70.6K | +70.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 4.7M | 4.6M | -70.2K |
| CLOUGH CAPITAL PARTNERS L P | New | 0 | 66.4K | +66.4K |
| Liontrust Investment Partners LLP | Increased | 337.0K | 402.2K | +65.2K |
| Susquehanna Portfolio Strategies, LLC | Increased | 55.7K | 119.3K | +63.6K |
| ProShare Advisors LLC | Reduced | 660.1K | 598.0K | -62.1K |
| Aware Super Pty Ltd as trustee of Aware Super | Sold Out | 61.5K | 0 | -61.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.