Public Sector Pension Investment Board (PSP Investments)
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Public Sector Pension Investment Board (PSP Investments)’s Amphastar Pharmaceuticals AMPH Stock Holding History

Public Sector Pension Investment Board (PSP Investments)’s Portfolio AMPH Stock Details AMPH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.48M Buy
126,574
+4,069
+3% +$99.5K 0.01% 1155
2025
Q4 		$3.28M Sell
122,505
-17,170
-12% -$442K 0.01% 1027
2025
Q3 		$3.72M Buy
139,675
+14,312
+11% +$370K 0.01% 898
2025
Q2 		$2.88M Buy
125,363
+6,478
+5% +$161K 0.01% 911
2025
Q1 		$3.45M Buy
118,885
+25,455
+27% +$813K 0.01% 882
2024
Q4 		$3.47M Buy
93,430
+12,843
+16% +$587K 0.01% 817
2024
Q3 		$3.91M Sell
80,587
-3,300
-4% -$145K 0.02% 593
2024
Q2 		$3.36M Buy
83,887
+7,294
+10% +$302K 0.02% 608
2024
Q1 		$3.36M Sell
76,593
-950
-1% -$49.1K 0.02% 544
2023
Q4 		$4.8M Buy
77,543
+30,443
+65% +$1.6M 0.04% 380
2023
Q3 		$2.17M Sell
47,100
-19,736
-30% -$1.08M 0.02% 717
2023
Q2 		$3.84M Buy
66,836
+534
+0.8% +$23.7K 0.03% 532
2023
Q1 		$2.49M Sell
66,302
-2,282
-3% -$74.8K 0.02% 805
2022
Q4 		$1.92M Sell
68,584
-1,495
-2% -$43.4K 0.01% 939
2022
Q3 		$1.97M Buy
70,079
+477
+0.7% +$15.6K 0.02% 849
2022
Q2 		$2.42M Buy
69,602
+830
+1% +$29.6K 0.02% 702
2022
Q1 		$2.47M Sell
68,772
-6,180
-8% -$175K 0.02% 896
2021
Q4 		$1.75M Sell
74,952
-17,137
-19% -$350K 0.01% 1149
2021
Q3 		$1.75M Buy
92,089
+17,137
+23% +$336K 0.01% 1156
2021
Q2 		$1.51M Sell
74,952
-24,902
-25% -$469K 0.01% 1227
2021
Q1 		$1.83M Sell
99,854
-5,800
-5% -$108K 0.01% 1036
2020
Q4 		$2.13M Buy
105,654
+24,702
+31% +$481K 0.02% 862
2020
Q3 		$1.52M Buy
80,952
+5,540
+7% +$112K 0.01% 1003
2020
Q2 		$1.69M Sell
75,412
-1,300
-2% -$23.8K 0.02% 877
2020
Q1 		$1.14M Hold
76,712
– – 0.01% 902
2019
Q4 		$1.48M Sell
76,712
-10,800
-12% -$207K 0.01% 1243
2019
Q3 		$1.74M Buy
87,512
+9,712
+12% +$202K 0.01% 1118
2019
Q2 		$1.64M Buy
77,800
+47,400
+156% +$991K 0.01% 1058
2019
Q1 		$621K Hold
30,400
– – 0.01% 1263
2018
Q4 		$605K Buy
30,400
+5,700
+23% +$112K 0.01% 1219
2018
Q3 		$475K Buy
24,700
+2,002
+9% +$35.7K ﹤0.01% 1322
2018
Q2 		$346K Hold
22,698
– – ﹤0.01% 1300
2018
Q1 		$426K Hold
22,698
– – ﹤0.01% 1187
2017
Q4 		$437K Hold
22,698
– – ﹤0.01% 1244
2017
Q3 		$406K Buy
22,698
+4,198
+23% +$69.1K ﹤0.01% 1217
2017
Q2 		$330K Sell
18,500
-6,500
-26% -$103K ﹤0.01% 1149
2017
Q1 		$363K Hold
25,000
– – ﹤0.01% 1174
2016
Q4 		$461K Hold
25,000
– – ﹤0.01% 1123
2016
Q3 		$474K Buy
+25,000
New +$454K 0.01% 1071

Other funds holding AMPH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BTW
Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

Public Sector Pension Investment Board (PSP Investments)'s AMPH Position: Q1 2026 in Review

Public Sector Pension Investment Board (PSP Investments) increased its Amphastar Pharmaceuticals (AMPH) stake by 3.3% in Q1 2026, buying an estimated $99.5K and bringing the position to 126,574 shares worth $2.48M. The position accounts for 0.01% of the portfolio, ranked #1155.

Public Sector Pension Investment Board (PSP Investments) first reported a position in AMPH in Q3 2016 and has held it in 39 quarters since. The position peaked at $4.8M in Q4 2023. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • Public Sector Pension Investment Board (PSP Investments) held 126,574 shares of Amphastar Pharmaceuticals worth $2.48M as of Q1 2026.
  • Public Sector Pension Investment Board (PSP Investments) bought 4,069 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $99.5K.
  • Amphastar Pharmaceuticals made up 0.01% of Public Sector Pension Investment Board (PSP Investments)'s portfolio in Q1 2026, its #1155 holding.
  • Public Sector Pension Investment Board (PSP Investments) first reported a position in Amphastar Pharmaceuticals in Q3 2016 and has held it in 39 quarters since.
  • Public Sector Pension Investment Board (PSP Investments)'s Amphastar Pharmaceuticals position peaked at $4.8M in Q4 2023.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on Public Sector Pension Investment Board (PSP Investments)'s 13F filing for Q1 2026, filed 13 May 2026.