West Pharmaceutical
WST
835 hedge funds and large institutions have $25.2B invested in West Pharmaceutical in 2026 Q2 according to their latest regulatory filings, with 148 funds opening new positions, 305 increasing their positions, 262 reducing their positions, and 62 closing their positions.
139% more first-time investments, than exits
New positions opened: 148 | Existing positions closed: 62
76% more call options, than puts
Call options by funds: $81.3M | Put options by funds: $46.1M
50% more funds holding in top 10
Funds holding in top 10: 6 → 9 (+3)
16% more repeat investments, than reductions
Existing positions increased: 305 | Existing positions reduced: 262
10% more funds holding
Funds holding: 756 → 835 (+79)
1.11% more ownership
Funds ownership: 98.64% → 99.75% (+1.1%)
5% less capital inflows, than outflows
Capital inflows: $2.34B | Capital outflows: $2.47B
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$711M |
| 2 |
William Blair Investment Management
Chicago,
Illinois
|
+$115M |
| 3 |
Lord, Abbett & Co
Jersey City,
New Jersey
|
+$55.5M |
| 4 |
Quantinno Capital Management
New York
|
+$44.8M |
| 5 |
Los Angeles Capital Management
Los Angeles,
California
|
+$38.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
APG Asset Management
Amsterdam,
Netherlands
|
-$216M |
| 2 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
-$164M |
| 3 |
Bank of New York Mellon
New York
|
-$129M |
| 4 |
Viking Global Investors
Stamford,
Connecticut
|
-$105M |
| 5 |
American Century Companies
Kansas City,
Missouri
|
-$91.8M |
WST Hedge Fund Activity: Q2 2026 in Review
835 of the 8,358 institutional investors tracked by Wall St. Rank reported a position in West Pharmaceutical (WST) for Q2 2026, worth a combined $25.2B — up 42% from $17.8B a quarter earlier.
Buyers outnumbered sellers: 148 funds opened new WST positions and 62 closed out — a net gain of 86 holders — while 305 added to existing stakes and 262 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $711M. The largest seller was APG Asset Management, cutting an estimated $216M.
- 835 institutional investors held West Pharmaceutical (WST) as of Q2 2026, up from 756 in Q1 2026.
- Funds reported $25.2B of West Pharmaceutical stock for Q2 2026, up 42% quarter-over-quarter.
- 148 funds opened new West Pharmaceutical positions in Q2 2026 and 62 closed out, a net change of +86 holders.
- The largest West Pharmaceutical buyer in Q2 2026 was Fidelity Investments, an estimated $711M added.
- The largest West Pharmaceutical seller in Q2 2026 was APG Asset Management, an estimated $216M sold.
Based on aggregated 13F filings for Q2 2026.