Amphastar Pharmaceuticals, Inc.

Tower Research Capital LLC (TRC) AMPH

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/17/2026

1,787

Value ($000)

Weight

0.0%

2020 Q2 - 2025 Q4 (23 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/17/2026	48	0.0%	1,787	12/31/2025
2025 Q3	11/14/2025	22	0.0%	822	9/30/2025
2025 Q2	8/15/2025	82	0.0%	3,583	6/30/2025
2025 Q1	5/15/2025	29	0.0%	987	3/31/2025
2024 Q4	2/13/2025	43	0.0%	1,145	12/31/2024
2024 Q3	11/14/2024	39	0.0%	797	9/30/2024
2024 Q2	8/13/2024	338	0.0%	8,458	6/30/2024
2024 Q1	5/15/2024	52	0.0%	1,181	3/31/2024
2023 Q4	2/13/2024	709	0.0%	11,456	12/31/2023
2023 Q3	11/14/2023	54	0.0%	1,165	9/30/2023
2023 Q2	8/14/2023	66	0.0%	1,142	6/30/2023
2023 Q1	5/9/2023	75	0.0%	1,998	3/31/2023
2022 Q4	2/10/2023	18	0.0%	651	12/31/2022
2022 Q3	11/10/2022	144	0.0%	5,143	9/30/2022
2022 Q2	8/15/2022	73	0.0%	2,099	6/30/2022
2022 Q1	5/12/2022	370	0.0%	10,283	3/31/2022
2021 Q4	2/14/2022	25	0.0%	1,087	12/31/2021
2021 Q3	11/15/2021	85	0.0%	4,467	9/30/2021
2021 Q2	8/16/2021	46	0.0%	2,262	6/30/2021
2021 Q1	5/17/2021	42	0.0%	2,310	3/31/2021
2020 Q4	2/16/2021	21	0.0%	1,037	12/31/2020
2020 Q3	11/16/2020	266	0.0%	14,162	9/30/2020
2020 Q2	8/13/2020	88	0.0%	3,929	6/30/2020