Dynamic Technology Lab’s Amphastar Pharmaceuticals AMPH Stock Holding History

Dynamic Technology Lab’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
2025 Q3	–	Sell	-33,300	Closed	-$765K	–	796
2025 Q2	$765K	Buy	+33,300	New	+$826K	0.1%	355
2025 Q1	–	Sell	-19,150	Closed	-$711K	–	971
2024 Q4	$711K	Buy	19,150 +14,468	+309%	+$662K	0.11%	313
2024 Q3	$227K	Sell	4,682 -11,224	-71%	-$493K	0.02%	834
2024 Q2	$636K	Sell	15,906 -1,783	-10%	-$73.9K	0.07%	444
2024 Q1	$777K	Buy	+17,689	New	+$914K	0.08%	431
2022 Q2	–	Sell	-6,990	Closed	-$251K	–	1097
2022 Q1	$251K	Buy	+6,990	New	+$198K	0.03%	866
2020 Q4	–	Sell	-10,304	Closed	-$193K	–	957
2020 Q3	$193K	Buy	+10,304	New	+$207K	0.03%	811
2016 Q2	–	Sell	-11,414	Closed	-$137K	–	849
2016 Q1	$137K	Buy	11,414 +419	+4%	+$4.94K	0.04%	806
2015 Q4	$156K	Buy	+10,995	New	+$145K	0.05%	758

Other funds holding AMPH

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

EIP

Epoch Investment Partners New York $17.6B AUM 34.17% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Dynamic Technology Lab's AMPH Position: Q3 2025 in Review

Dynamic Technology Lab sold out of Amphastar Pharmaceuticals (AMPH) in Q3 2025, closing a stake of 33,300 shares — an estimated $765K sold.

Dynamic Technology Lab first reported a position in AMPH in Q4 2015 and held it in 9 quarters. The position peaked at $777K in Q1 2024. 243 funds tracked by Wall St. Rank hold AMPH as of Q3 2025.

Dynamic Technology Lab reported no remaining Amphastar Pharmaceuticals position as of Q3 2025 after selling out during the quarter.
Dynamic Technology Lab sold 33,300 Amphastar Pharmaceuticals shares in Q3 2025, an estimated $765K.
Dynamic Technology Lab first reported a position in Amphastar Pharmaceuticals in Q4 2015 and held it in 9 quarters.
Dynamic Technology Lab's Amphastar Pharmaceuticals position peaked at $777K in Q1 2024.
243 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q3 2025.

Based on Dynamic Technology Lab's 13F filing for Q3 2025, filed 13 Nov 2025.