Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH)

Historical Holders from Q2 2014 to Q3 2025

Symbol
AMPH on Nasdaq
Type / Class
Equity / Common Stock
Shares outstanding
46.4M
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares, excl. options
32.7M
Holdings value
$873M
% of all portfolios
0.001%
Grand Portfolio weight change
+0%
Number of holders
239
Number of buys
113
Number of sells
-126
Average Value change %
+0%
Average buys %
+0%
Average sells %
0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Zhang Jack Y. 24.8% $301M 12.5M Jack Y. Zhang 31 Dec 2024
BlackRock, Inc. 11.5% $142M 5.33M BlackRock, Inc. 30 Sep 2025

Institutional Holders of Amphastar Pharmaceuticals, Inc. - Common Stock (AMPH)

Period Reported Shares, Excl. Options Value, Excl. Options Change Price Investors
2025 Q3 32.7M $873M +$25.4K $26.65 239
2025 Q2 32.7M $752M -$21.7M $22.96 243
2025 Q1 33.2M $963M -$63.2M $28.99 240
2024 Q4 35.2M $1.31B -$16.2M $37.13 261
2024 Q3 35.3M $1.71B +$41.9M $48.53 276
2024 Q2 34.4M $1.38B +$31.9M $40.00 268
2024 Q1 33.6M $1.47B -$321K $43.91 271
2023 Q4 33.3M $2.06B +$87.2M $61.85 273
2023 Q3 32M $1.47B +$20.4M $45.99 253
2023 Q2 31.4M $1.8B +$73.8M $57.47 241
2023 Q1 30.2M $1.13B +$45M $37.50 216
2022 Q4 29.2M $817M -$23.4M $28.02 208
2022 Q3 29.9M $840M -$35.8M $28.10 196
2022 Q2 30.6M $1.06B +$41M $34.79 217
2022 Q1 29.8M $1.07B +$25.9M $35.90 201
2021 Q4 29.2M $679M +$19.6M $23.29 165
2021 Q3 27.9M $531M +$12.2M $19.01 136
2021 Q2 27.3M $550M +$25.7M $20.16 142
2021 Q1 26M $477M +$545K $18.32 129
2020 Q4 26M $523M -$2.78M $20.11 126
2020 Q3 26.2M $492M -$4.78M $18.75 131
2020 Q2 26.3M $591M +$55.5M $22.46 132
2020 Q1 23.9M $355M -$14.2M $14.84 105
2019 Q4 24.6M $474M +$9.59M $19.29 116
2019 Q3 24.1M $478M +$39.1M $19.83 130
2019 Q2 22.3M $471M +$11.7M $21.11 129
2019 Q1 22.4M $458M +$3.99M $20.43 133
2018 Q4 22.2M $442M +$31.4M $19.90 129
2018 Q3 20.6M $397M +$12M $19.24 104
2018 Q2 20.1M $307M -$10.1M $15.26 110
2018 Q1 20.7M $388M +$4.86M $18.75 114
2017 Q4 20.6M $397M +$6.68M $19.24 104
2017 Q3 20.3M $363M -$2.72M $17.87 100
2017 Q2 20.4M $365M +$4.54M $17.86 106
2017 Q1 20.4M $296M +$42.2M $14.50 114
2016 Q4 22.3M $412M +$7.35M $18.42 135
2016 Q3 22.2M $421M +$115M $18.97 134
2016 Q2 16.2M $261M +$32.1M $16.12 104
2016 Q1 14.3M $171M -$8.85M $12.00 93
2015 Q4 14.7M $210M +$13M $14.23 93
2015 Q3 13.6M $159M -$3.11M $11.69 91
2015 Q2 13.3M $234M +$48.8M $17.58 85
2015 Q1 10.6M $158M +$40.4M $14.96 57
2014 Q4 7.93M $92.1M +$5.4M $11.61 54
2014 Q3 7.24M $84.4M +$80.9M $11.64 44
2014 Q2 300K $3M +$3M $10.01 2