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AMI Asset Management’s West Pharmaceutical WST Stock Holding History

AMI Asset Management’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
Q1 		$38.7M Sell
154,401
-4,638
-3% -$1.15M 2.47% 20
2025
Q4 		$43.8M Sell
159,039
-3,961
-2% -$1.08M 2.48% 17
2025
Q3 		$42.8M Sell
163,000
-2,305
-1% -$560K 2.39% 18
2025
Q2 		$36.2M Sell
165,305
-8,498
-5% -$1.82M 2.07% 25
2025
Q1 		$38.9M Sell
173,803
-8,857
-5% -$2.44M 2.28% 19
2024
Q4 		$59.8M Sell
182,660
-1,486
-0.8% -$468K 3.19% 9
2024
Q3 		$55.3M Buy
184,146
+24,218
+15% +$7.42M 2.99% 12
2024
Q2 		$52.7M Sell
159,928
-4,810
-3% -$1.7M 2.84% 14
2024
Q1 		$65.2M Buy
164,738
+5,217
+3% +$1.93M 3.33% 8
2023
Q4 		$56.2M Sell
159,521
-1,039
-0.6% -$368K 3.07% 11
2023
Q3 		$60.2M Buy
160,560
+1,799
+1% +$696K 3.73% 5
2023
Q2 		$60.7M Sell
158,761
-21,152
-12% -$7.56M 3.61% 5
2023
Q1 		$62.3M Sell
179,913
-2,167
-1% -$633K 3.98% 3
2022
Q4 		$42.9M Buy
182,080
+90,810
+99% +$21.5M 3% 13
2022
Q3 		$22.5M Sell
91,270
-3,988
-4% -$1.21M 1.64% 30
2022
Q2 		$28.8M Sell
95,258
-1,196
-1% -$389K 1.83% 24
2022
Q1 		$39.6M Buy
96,454
+249
+0.3% +$97.5K 2.07% 24
2021
Q4 		$45.1M Sell
96,205
-2,958
-3% -$1.27M 2.18% 22
2021
Q3 		$42.1M Sell
99,163
-2,970
-3% -$1.25M 2.11% 23
2021
Q2 		$36.7M Sell
102,133
-6,043
-6% -$2M 1.84% 28
2021
Q1 		$30.5M Sell
108,176
-10,028
-8% -$2.87M 1.59% 32
2020
Q4 		$33.5M Sell
118,204
-1,874
-2% -$526K 1.66% 32
2020
Q3 		$33M Sell
120,078
-9,090
-7% -$2.41M 1.68% 29
2020
Q2 		$29.3M Sell
129,168
-90,499
-41% -$17.8M 1.56% 31
2020
Q1 		$33.4M Sell
219,667
-2,962
-1% -$456K 2.11% 24
2019
Q4 		$33.5M Sell
222,629
-7,068
-3% -$1.03M 1.65% 30
2019
Q3 		$32.6M Sell
229,697
-143,651
-38% -$19.8M 1.69% 30
2019
Q2 		$46.7M Buy
373,348
+163,329
+78% +$19.3M 2.32% 20
2019
Q1 		$23.1M Sell
210,019
-4,418
-2% -$460K 1.71% 26
2018
Q4 		$21M Sell
214,437
-6,208
-3% -$674K 1.74% 25
2018
Q3 		$27.2M Sell
220,645
-71,371
-24% -$8M 1.85% 26
2018
Q2 		$29M Sell
292,016
-8,564
-3% -$788K 2.07% 21
2018
Q1 		$26.5M Sell
300,580
-22,565
-7% -$2.11M 1.89% 23
2017
Q4 		$31.9M Sell
323,145
-12,957
-4% -$1.27M 2.2% 15
2017
Q3 		$32.4M Buy
336,102
+87,568
+35% +$7.92M 2.29% 15
2017
Q2 		$23.5M Buy
248,534
+225,154
+963% +$20.7M 1.68% 25
2017
Q1 		$1.91M Sell
23,380
-2,949
-11% -$247K 0.14% 70
2016
Q4 		$2.23M Buy
26,329
+670
+3% +$52.7K 0.17% 69
2016
Q3 		$1.91M Buy
25,659
+178
+0.7% +$14.1K 0.13% 67
2016
Q2 		$1.93M Sell
25,481
-192,801
-88% -$14M 0.13% 65
2016
Q1 		$15.1M Sell
218,282
-19,019
-8% -$1.14M 1.04% 43
2015
Q4 		$14.3M Buy
237,301
+13,051
+6% +$785K 0.99% 44
2015
Q3 		$12.1M Buy
224,250
+2,054
+0.9% +$120K 0.93% 40
2015
Q2 		$12.9M Buy
222,196
+407
+0.2% +$22.7K 0.96% 41
2015
Q1 		$13.4M Buy
221,789
+25,616
+13% +$1.37M 1.04% 42
2014
Q4 		$10.4M Buy
196,173
+38,279
+24% +$1.91M 0.91% 42
2014
Q3 		$7.07M Buy
+157,894
New +$6.71M 0.69% 53

Other funds holding WST

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
GIM
Generation Investment Management London, United Kingdom $11.2B AUM 0.58% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

AMI Asset Management's WST Position: Q1 2026 in Review

AMI Asset Management reduced its West Pharmaceutical (WST) stake by 2.9% in Q1 2026, selling an estimated $1.15M and leaving 154,401 shares worth $38.7M. The position accounts for 2.47% of the portfolio, ranked #20.

AMI Asset Management first reported a position in WST in Q3 2014 and has held it in 47 quarters since. The position peaked at $65.2M in Q1 2024. 753 funds tracked by Wall St. Rank hold WST as of Q1 2026.

  • AMI Asset Management held 154,401 shares of West Pharmaceutical worth $38.7M as of Q1 2026.
  • AMI Asset Management sold 4,638 West Pharmaceutical shares in Q1 2026, an estimated $1.15M.
  • West Pharmaceutical made up 2.47% of AMI Asset Management's portfolio in Q1 2026, its #20 holding.
  • AMI Asset Management first reported a position in West Pharmaceutical in Q3 2014 and has held it in 47 quarters since.
  • AMI Asset Management's West Pharmaceutical position peaked at $65.2M in Q1 2024.
  • 753 funds tracked by Wall St. Rank held West Pharmaceutical as of Q1 2026.

Based on AMI Asset Management's 13F filing for Q1 2026, filed 23 Apr 2026.