Harbour Investments’s Amphastar Pharmaceuticals AMPH Stock Holding History

Harbour Investments’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 Q4	–	Sell	-270	Closed	-$7.2K	–	3870
2025 Q3	$7.2K	Hold	270	–	–	﹤0.01%	2830
2025 Q2	$6.2K	Hold	270	–	–	﹤0.01%	2797
2025 Q1	$7.83K	Hold	270	–	–	﹤0.01%	2631
2024 Q4	$10K	Hold	270	–	–	﹤0.01%	2446
2024 Q3	$13.1K	Hold	270	–	–	﹤0.01%	2239
2024 Q2	$10.8K	Hold	270	–	–	﹤0.01%	2224
2024 Q1	$11.9K	Hold	270	–	–	﹤0.01%	2157
2023 Q4	$16.7K	Hold	270	–	–	﹤0.01%	1954
2023 Q3	$12.4K	Hold	270	–	–	﹤0.01%	1947
2023 Q2	$15.5K	Hold	270	–	–	﹤0.01%	1861
2023 Q1	$10.1K	Hold	270	–	–	﹤0.01%	2012
2022 Q4	$7.57K	Hold	270	–	–	﹤0.01%	2071
2022 Q3	$9K	Hold	270	–	–	﹤0.01%	1951
2022 Q2	$9K	Buy	+270	New	+$9.63K	﹤0.01%	1951

Other funds holding AMPH

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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

TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return

EIP

Epoch Investment Partners New York $16.5B AUM 24.3% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Harbour Investments's AMPH Position: Q4 2025 in Review

Harbour Investments sold out of Amphastar Pharmaceuticals (AMPH) in Q4 2025, closing a stake of 270 shares — an estimated $7.2K sold.

Harbour Investments first reported a position in AMPH in Q2 2022 and held it in 14 quarters. The position peaked at $16.7K in Q4 2023. 235 funds tracked by Wall St. Rank hold AMPH as of Q4 2025.

Harbour Investments reported no remaining Amphastar Pharmaceuticals position as of Q4 2025 after selling out during the quarter.
Harbour Investments sold 270 Amphastar Pharmaceuticals shares in Q4 2025, an estimated $7.2K.
Harbour Investments first reported a position in Amphastar Pharmaceuticals in Q2 2022 and held it in 14 quarters.
Harbour Investments's Amphastar Pharmaceuticals position peaked at $16.7K in Q4 2023.
235 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q4 2025.

Based on Harbour Investments's 13F filing for Q4 2025, filed 9 Feb 2026.