WST West Pharmaceutical Services, Inc.
West Pharmaceutical Services, Inc. (WST) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| VIKING GLOBAL INVESTORS LP Growth | Sold Out | -416.9K | -100.0% | $149.7M | 0.0% | 70 |
| Vestal Point Capital Growth Healthcare | Sold Out | -75.0K | -100.0% | $26.9M | 0.0% | 65 |
| OrbiMed Advisors Growth Healthcare | New | +70.6K | — | $25.3M | 0.5% | 63 |
| Alyeska Investment Group, L.P. | New | +31.0K | — | $11.1M | 0.0% | 60 |
| Capital Fund Management Quant Macro | Sold Out | -32.2K | -100.0% | $11.6M | 0.0% | 57 |
| Qube Research & Technologies Ltd Quant | Sold Out | -22.3K | -100.0% | $8.0M | 0.0% | 57 |
| WORLDQUANT MILLENNIUM ADVISORS LLC Quant | Reduced | -259.7K | -96.9% | $93.2M | 0.0% | 56 |
| Weiss Asset Management Event Quant | Sold Out | -7.9K | -100.0% | $2.8M | 0.0% | 56 |
| Verition Fund Management Event Long/Short | New | +21.5K | — | $7.7M | 0.1% | 56 |
| Balyasny Asset Management L.P. | Increased | +44.6K | +3982.6% | $16.0M | 0.0% | 55 |
Most significant buyers
By move score, not size.
- OrbiMed Advisors
- Alyeska Investment Group, L.P.
- Verition Fund Management
- Balyasny Asset Management L.P.
- MARSHALL WACE, LLP
Most significant sellers
By move score, not size.
- VIKING GLOBAL INVESTORS LP
- Vestal Point Capital
- Capital Fund Management
- Qube Research & Technologies Ltd
- WORLDQUANT MILLENNIUM ADVISORS LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| VIKING GLOBAL INVESTORS LP | 1 | 0 | 416.9K | -416.9K | -100.0% | 0.0% | Sold Out | 70 |
| Vestal Point Capital | 1 | 0 | 75.0K | -75.0K | -100.0% | 0.0% | Sold Out | 65 |
| OrbiMed Advisors | 2 | 70.6K | 0 | +70.6K | — | 0.5% | New | 63 |
| Alyeska Investment Group, L.P. | 2 | 31.0K | 0 | +31.0K | — | 0.0% | New | 60 |
| Capital Fund Management | 3 | 0 | 32.2K | -32.2K | -100.0% | 0.0% | Sold Out | 57 |
| Qube Research & Technologies Ltd | 2 | 0 | 22.3K | -22.3K | -100.0% | 0.0% | Sold Out | 57 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 8.4K | 268.1K | -259.7K | -96.9% | 0.0% | Reduced | 56 |
| Weiss Asset Management | 2 | 0 | 7.9K | -7.9K | -100.0% | 0.0% | Sold Out | 56 |
| Verition Fund Management | 2 | 21.5K | 0 | +21.5K | — | 0.1% | New | 56 |
| Balyasny Asset Management L.P. | 2 | 45.8K | 1.1K | +44.6K | +3982.6% | 0.0% | Increased | 55 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 30.9K | 209.7K | -178.8K | -85.3% | 0.0% | Reduced | 55 |
| TWO SIGMA INVESTMENTS, LP | 2 | 18.2K | 225.6K | -207.4K | -91.9% | 0.0% | Reduced | 55 |
| MARSHALL WACE, LLP | 2 | 83.6K | 1.6K | +82.0K | +5213.3% | 0.0% | Increased | 54 |
| Voleon Capital Management | 3 | 0 | 2.9K | -2.9K | -100.0% | 0.0% | Sold Out | 53 |
| Armistice Capital | 3 | 578 | 0 | +578 | — | 0.0% | New | 53 |
| Point72 Asset Management, L.P. | 1 | 283.4K | 159.4K | +124.0K | +77.8% | 0.2% | Increased | 53 |
| Cinctive Capital Management | 3 | 7.6K | 0 | +7.6K | — | 0.1% | New | 52 |
| Schonfeld Strategic Advisors | 3 | 1.0K | 0 | +1.0K | — | 0.0% | New | 51 |
| Woodline Partners LP | 2 | 15.5K | 2.8K | +12.7K | +452.3% | 0.0% | Increased | 50 |
| Graham Capital Management | 3 | 1.8K | 0 | +1.8K | — | 0.0% | New | 49 |
| CenterBook Partners | 4 | 1.7K | 0 | +1.7K | — | 0.0% | New | 49 |
| Squarepoint Ops LLC | 2 | 3.3K | 23.7K | -20.3K | -86.0% | 0.0% | Reduced | 47 |
| Caxton Associates | 3 | 3.9K | 1.5K | +2.4K | +165.3% | 0.0% | Increased | 47 |
| Bridgewater Associates | 1 | 10.4K | 23.2K | -12.7K | -55.0% | 0.0% | Reduced | 46 |
| Winton Group | 4 | 2.7K | 33.4K | -30.7K | -91.9% | 0.0% | Reduced | 46 |
| AQR Capital Management | 3 | 57.6K | 266.9K | -209.3K | -78.4% | 0.0% | Reduced | 45 |
| Boothbay Fund Management | 4 | 5.0K | 1.9K | +3.1K | +168.9% | 0.0% | Increased | 45 |
| Engineers Gate | 4 | 18.9K | 3.2K | +15.7K | +486.9% | 0.1% | Increased | 44 |
| Gotham Asset Management, LLC | 2 | 12.1K | 7.1K | +5.0K | +71.3% | 0.0% | Increased | 43 |
| Tudor Investment Corporation | 2 | 23.9K | 65.4K | -41.6K | -63.5% | 0.0% | Reduced | 43 |
| MILLENNIUM MANAGEMENT LLC | 2 | 21.3K | 13.8K | +7.5K | +54.6% | 0.0% | Increased | 42 |
| Man Group | 3 | 34.7K | 79.6K | -45.0K | -56.5% | 0.0% | Reduced | 39 |
| Holocene Advisors, LP | 2 | 275.4K | 203.6K | +71.8K | +35.3% | 0.2% | Increased | 39 |
| CITADEL ADVISORS LLC | 1 | 352.8K | 323.6K | +29.2K | +9.0% | 0.1% | Increased | 33 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 59.0K | 64.2K | -5.2K | -8.1% | 0.0% | Reduced | 29 |
| D. E. Shaw & Co., Inc. | 1 | 12.9K | 14.0K | -1.1K | -7.9% | 0.0% | Reduced | 29 |
| ExodusPoint Capital Management | 3 | 30.9K | 26.8K | +4.0K | +15.1% | 0.1% | Increased | 27 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.