News + Filings Holdings
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DIMENSIONAL FUND ADVISORS LP
> AMPH
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,930,615 | 13,044 | 110,948,415,000 | 39,038,919,000 | $57,467.91 |
| 03/31/2023 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,917,571 | 51,027 | 71,909,496,000 | 71,857,195,000 | $37,500.30 |
| 12/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,866,544 | 27,410 | 52,301,000 | 618,000 | $28.02 |
| 09/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,839,134 | 13,091 | 51,683,000 | -11,843,000 | $28.10 |
| 06/30/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,826,043 | 29,774 | 63,526,000 | -962,000 | $34.79 |
| 03/31/2022 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,796,269 | 25,418 | 64,488,000 | 23,245,000 | $35.90 |
| 12/31/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,770,851 | 25,936 | 41,243,000 | 8,072,000 | $23.29 |
| 09/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,744,915 | 49,022 | 33,171,000 | -1,018,000 | $19.01 |
| 06/30/2021 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,695,893 | -111,492 | 34,189,000 | -2,157,000 | $20.16 |
| 12/31/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,807,385 | -18,608 | 36,346,000 | 2,109,000 | $20.11 |
| 09/30/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,825,993 | -16,829 | 34,237,000 | -7,152,000 | $18.75 |
| 06/30/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,842,822 | -4,531 | 41,389,000 | 13,974,000 | $22.46 |
| 03/31/2020 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,847,353 | 38,675 | 27,415,000 | -7,474,000 | $14.84 |
| 12/31/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,808,678 | 5,645 | 34,889,000 | -866,000 | $19.29 |
| 09/30/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,803,033 | -14,620 | 35,755,000 | -2,615,000 | $19.83 |
| 06/30/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,817,653 | -106,596 | 38,370,000 | -943,000 | $21.11 |
| 03/31/2019 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,924,249 | 23,018 | 39,313,000 | 1,478,000 | $20.43 |
| 12/31/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,901,231 | -8,652 | 37,835,000 | 1,089,000 | $19.90 |
| 09/30/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,909,883 | 140,350 | 36,746,000 | 9,742,000 | $19.24 |
| 06/30/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,769,533 | 84,085 | 27,004,000 | -4,598,000 | $15.26 |
| 03/31/2018 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,685,448 | 53,646 | 31,602,000 | 205,000 | $18.75 |
| 12/31/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,631,802 | 73,689 | 31,397,000 | 3,553,000 | $19.24 |
| 09/30/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,558,113 | 226,271 | 27,844,000 | 4,058,000 | $17.87 |
| 06/30/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,331,842 | 270,654 | 23,786,000 | 8,398,000 | $17.86 |
| 03/31/2017 | Amphastar Pharmaceuticals, Inc. | AMPH | 1,061,188 | 260,288 | 15,388,000 | 635,000 | $14.50 |
| 12/31/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 800,900 | 324,043 | 14,753,000 | 5,707,000 | $18.42 |
| 09/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 476,857 | 115,847 | 9,046,000 | 3,227,000 | $18.97 |
| 06/30/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 361,010 | 103,556 | 5,819,000 | 2,730,000 | $16.12 |
| 03/31/2016 | Amphastar Pharmaceuticals, Inc. | AMPH | 257,454 | 257,454 | 3,089,000 | 3,089,000 | $12.00 |
| 12/31/2015 | Amphastar Pharmaceuticals, Inc. | AMPH | 68,188 | 68,188 | 970,000 | 970,000 | $14.23 |
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