News + Filings Holdings
|
OBERWEIS ASSET MANAGEMENT INC
> AMPH
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 147,800 | -30,400 | 8,494,066,000 | 1,811,566,000 | $57,470.00 |
| 03/31/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 178,200 | 44,200 | 6,682,500,000 | 2,927,820,000 | $37,500.00 |
| 12/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 134,000 | 32,500 | 3,754,680,000 | 3,751,828,000 | $28,020.00 |
| 09/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 101,500 | 83,600 | 2,852,000 | 2,229,000 | $28.10 |
| 06/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 17,900 | 4,400 | 623,000 | 138,000 | $34.80 |
| 03/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 13,500 | 0 | 485,000 | 171,000 | $35.93 |
| 12/31/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 13,500 | 2,900 | 314,000 | 112,000 | $23.26 |
| 09/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 10,600 | 0 | 202,000 | -12,000 | $19.06 |
| 06/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 10,600 | 10,600 | 214,000 | 214,000 | $20.19 |
| 03/31/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 0 | -27,200 | 0 | -501,000 | |
| 12/31/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 27,200 | 0 | 501,000 | -15,000 | $18.42 |
| 09/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 27,200 | 0 | 516,000 | 78,000 | $18.97 |
| 06/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 27,200 | 27,200 | 438,000 | 438,000 | $16.10 |
| << Prev Next >> |
|