West Pharmaceutical
804 hedge funds and large institutions have $19.1B invested in West Pharmaceutical in 2025 Q4 according to their latest regulatory filings, with 115 funds opening new positions, 269 increasing their positions, 290 reducing their positions, and 56 closing their positions.
105% more first-time investments, than exits
New positions opened: 115 | Existing positions closed: 56
63% more call options, than puts
Call options by funds: $38.9M | Put options by funds: $23.8M
33% more funds holding in top 10
Funds holding in top 10: 3 → 4 (+1)
6% more capital invested
Capital invested by funds: $18B → $19.1B (+$1.1B)
6% more funds holding
Funds holding: 758 → 804 (+46)
0.94% more ownership
Funds ownership: 95.65% → 96.59% (+0.94%)
7% less repeat investments, than reductions
Existing positions increased: 269 | Existing positions reduced: 290
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LP
Longview Partners
St Peter Port,
Guernsey
|
+$213M |
| 2 |
GIM
Generation Investment Management
London,
United Kingdom
|
+$160M |
| 3 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$130M |
| 4 |
LIP
Liontrust Investment Partners
London,
United Kingdom
|
+$100M |
| 5 |
Viking Global Investors
Stamford,
Connecticut
|
+$80.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCP
Durable Capital Partners
Bethesda,
Maryland
|
-$308M |
| 2 |
VanEck Associates
New York
|
-$194M |
| 3 |
Brown Advisory
Baltimore,
Maryland
|
-$152M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$132M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
-$116M |
WST Hedge Fund Activity: Q4 2025 in Review
804 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in West Pharmaceutical (WST) for Q4 2025, worth a combined $19.1B — up 6.1% from $18B a quarter earlier.
Buyers outnumbered sellers: 115 funds opened new WST positions and 56 closed out — a net gain of 59 holders — while 269 added to existing stakes and 290 trimmed.
The largest buyer was Longview Partners, adding an estimated $213M. The largest seller was Durable Capital Partners, exiting entirely with an estimated $308M sold.
- 804 institutional investors held West Pharmaceutical (WST) as of Q4 2025, up from 758 in Q3 2025.
- Funds reported $19.1B of West Pharmaceutical stock for Q4 2025, up 6.1% quarter-over-quarter.
- 115 funds opened new West Pharmaceutical positions in Q4 2025 and 56 closed out, a net change of +59 holders.
- The largest West Pharmaceutical buyer in Q4 2025 was Longview Partners, an estimated $213M added.
- The largest West Pharmaceutical seller in Q4 2025 was Durable Capital Partners, an estimated $308M sold.
Based on aggregated 13F filings for Q4 2025.