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Rossby Financial’s West Pharmaceutical WST Stock Holding History

Rossby Financial’s Portfolio WST Stock Details WST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$34.5K Buy
96
+5
+5% +$1.53K 0.01% 804
2026
Q1 		$23K Sell
91
-231
-72% -$57.5K ﹤0.01% 958
2025
Q4 		$88.6K Sell
322
-649
-67% -$178K 0.03% 428
2025
Q3 		$264K Buy
971
+68
+8% +$16.5K 0.09% 229
2025
Q2 		$198K Sell
903
-118
-12% -$25.2K 0.07% 260
2025
Q1 		$219K Buy
+1,021
New +$281K 0.09% 207

Other funds holding WST

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
GIM
Generation Investment Management London, United Kingdom $10.3B AUM 4.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Rossby Financial's WST Position: Q2 2026 in Review

Rossby Financial increased its West Pharmaceutical (WST) stake by 5.5% in Q2 2026, buying an estimated $1.53K and bringing the position to 96 shares worth $34.5K. The position accounts for 0.01% of the portfolio, ranked #804.

Rossby Financial first reported a position in WST in Q1 2025 and has held it in 6 quarters since. The position peaked at $264K in Q3 2025. 831 funds tracked by Wall St. Rank hold WST as of Q2 2026.

  • Rossby Financial held 96 shares of West Pharmaceutical worth $34.5K as of Q2 2026.
  • Rossby Financial bought 5 West Pharmaceutical shares in Q2 2026, an estimated $1.53K.
  • West Pharmaceutical made up 0.01% of Rossby Financial's portfolio in Q2 2026, its #804 holding.
  • Rossby Financial first reported a position in West Pharmaceutical in Q1 2025 and has held it in 6 quarters since.
  • Rossby Financial's West Pharmaceutical position peaked at $264K in Q3 2025.
  • 831 funds tracked by Wall St. Rank held West Pharmaceutical as of Q2 2026.

Based on Rossby Financial's 13F filing for Q2 2026, filed 4 Aug 2026.