LAM Group’s Amphastar Pharmaceuticals AMPH Stock Holding History

LAM Group’s Portfolio AMPH Stock Details AMPH Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q3	$3.38M	Hold	130,800	–	–	1.7%	22
2026 Q2	$2.64M	Hold	130,800	–	–	1.31%	24
2026 Q1	$2.56M	Hold	130,800	–	–	1.41%	24
2025 Q4	$3.5M	Hold	130,800	–	–	2%	19
2025 Q3	$3.49M	Hold	130,800	–	–	2.16%	19
2025 Q2	$3M	Hold	130,800	–	–	2.01%	20
2025 Q1	$3.79M	Hold	130,800	–	–	2.79%	14
2024 Q4	$4.86M	Hold	130,800	–	–	3.46%	8
2024 Q3	$6.35M	Hold	130,800	–	–	4.49%	4
2024 Q2	$5.23M	Hold	130,800	–	–	4.41%	4
2024 Q1	$5.74M	Hold	130,800	–	–	4.68%	5
2023 Q4	$8.09M	Buy	130,800 +2,800	+2%	+$147K	7.36%	1
2023 Q3	$5.89M	Hold	128,000	–	–	5.78%	4
2023 Q2	$7.36M	Sell	128,000 -2,250	-2%	-$100K	6.85%	2
2023 Q1	$4.88M	Hold	130,250	–	–	4.79%	4
2022 Q4	$3.65M	Buy	+130,250	New	+$3.78M	3.75%	8

Other funds holding AMPH

Bridge City Capital Lake Oswego, Oregon $480M AUM 47.16% 1-Year Est. Return

AssetMark Inc Concord, California $59.5B AUM 15.92% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $83.2B AUM 35.34% 1-Year Est. Return

SummerHaven Investment Management Stamford, Connecticut $179M AUM 57.61% 1-Year Est. Return

SteelPeak Wealth Woodland Hills, California $4.07B AUM 38.25% 1-Year Est. Return

Profund Advisors Bethesda, Maryland $3.48B AUM 66.96% 1-Year Est. Return

Polaris Capital Management Boston, Massachusetts $953M AUM 27.74% 1-Year Est. Return

Illumine Investment Management Poulsbo, Washington $144M AUM 33.61% 1-Year Est. Return

Achmea Investment Management Zeist, Netherlands $12.6B AUM 25.68% 1-Year Est. Return

New York State Teachers Retirement System (NYSTRS) Albany, New York $52.9B AUM 36.03% 1-Year Est. Return

LAM Group's AMPH Position: Q3 2026 in Review

LAM Group held its Amphastar Pharmaceuticals (AMPH) position steady in Q3 2026 at 130,800 shares worth $3.38M. The position accounts for 1.7% of the portfolio, ranked #22.

LAM Group first reported a position in AMPH in Q4 2022 and has held it in 16 quarters since. The position peaked at $8.09M in Q4 2023. 58 funds tracked by Wall St. Rank hold AMPH as of Q3 2026.

LAM Group held 130,800 shares of Amphastar Pharmaceuticals worth $3.38M as of Q3 2026.
LAM Group left its Amphastar Pharmaceuticals share count unchanged in Q3 2026.
Amphastar Pharmaceuticals made up 1.7% of LAM Group's portfolio in Q3 2026, its #22 holding.
LAM Group first reported a position in Amphastar Pharmaceuticals in Q4 2022 and has held it in 16 quarters since.
LAM Group's Amphastar Pharmaceuticals position peaked at $8.09M in Q4 2023.
58 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q3 2026.

Based on LAM Group's 13F filing for Q3 2026, filed 26 Oct 2026.