OAM
Oberweis Asset Management’s Amphastar Pharmaceuticals AMPH Stock Holding History
| Quarter | Market Value | Status | Shares |
Shares Change % | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q1 | – | Sell |
-184,595
| Closed | -$6.85M | – | 192 |
|
|
2024
Q4 | $6.85M | Buy |
184,595
+23,440
| +15% | +$870K | 0.32% | 114 |
|
|
2024
Q3 | $7.82M | Buy |
161,155
+26,100
| +19% | +$1.27M | 0.4% | 96 |
|
|
2024
Q2 | $5.4M | Sell |
135,055
-282,810
| -68% | -$11.3M | 0.33% | 117 |
|
|
2024
Q1 | $18.3M | Buy |
417,865
+77,600
| +23% | +$3.41M | 1.33% | 8 |
|
|
2023
Q4 | $21M | Buy |
340,265
+187,765
| +123% | +$11.6M | 1.96% | 6 |
|
|
2023
Q3 | $7.01M | Buy |
152,500
+4,700
| +3% | +$216K | 0.75% | 28 |
|
|
2023
Q2 | $8.49M | Sell |
147,800
-30,400
| -17% | -$1.75M | 1.03% | 17 |
|
|
2023
Q1 | $6.68M | Buy |
178,200
+44,200
| +33% | +$1.66M | 1.04% | 15 |
|
|
2022
Q4 | $3.75M | Buy |
134,000
+32,500
| +32% | +$911K | 0.8% | 26 |
|
|
2022
Q3 | $2.85M | Buy |
101,500
+83,600
| +467% | +$2.35M | 0.67% | 29 |
|
|
2022
Q2 | $623K | Buy |
17,900
+4,400
| +33% | +$153K | 0.16% | 104 |
|
|
2022
Q1 | $485K | Hold |
13,500
| – | – | 0.1% | 113 |
|
|
2021
Q4 | $314K | Buy |
13,500
+2,900
| +27% | +$67.5K | 0.06% | 130 |
|
|
2021
Q3 | $202K | Hold |
10,600
| – | – | 0.04% | 155 |
|
|
2021
Q2 | $214K | Buy |
+10,600
| New | +$214K | 0.05% | 152 |
|
|
2017
Q1 | – | Sell |
-27,200
| Closed | -$501K | – | 139 |
|
|
2016
Q4 | $501K | Hold |
27,200
| – | – | 0.15% | 93 |
|
|
2016
Q3 | $516K | Hold |
27,200
| – | – | 0.15% | 95 |
|
|
2016
Q2 | $438K | Buy |
+27,200
| New | +$438K | 0.13% | 116 |
|