Granite Investment Partners’s Amphastar Pharmaceuticals AMPH Stock Holding History

Granite Investment Partners’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 Q2	–	Sell	-375,778	Closed	-$10.9M	–	256
2025 Q1	$10.9M	Sell	375,778 -20,924	-5%	-$668K	0.55%	70
2024 Q4	$14.7M	Sell	396,702 -9,016	-2%	-$412K	0.64%	56
2024 Q3	$19.7M	Buy	405,718 +8,204	+2%	+$360K	0.84%	31
2024 Q2	$15.9M	Buy	397,514 +44,744	+13%	+$1.85M	0.66%	49
2024 Q1	$15.5M	Sell	352,770 -12,570	-3%	-$649K	0.59%	64
2023 Q4	$22.6M	Buy	365,340 +34,429	+10%	+$1.81M	0.88%	35
2023 Q3	$15.2M	Sell	330,911 -202,248	-38%	-$11M	0.64%	59
2023 Q2	$30.6M	Sell	533,159 -3,662	-0.7%	-$162K	1.22%	12
2023 Q1	$20.1M	Buy	+536,821	New	+$17.6M	0.84%	40

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

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

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

Granite Investment Partners's AMPH Position: Q2 2025 in Review

Granite Investment Partners sold out of Amphastar Pharmaceuticals (AMPH) in Q2 2025, closing a stake of 375,778 shares — an estimated $10.9M sold.

Granite Investment Partners first reported a position in AMPH in Q1 2023 and held it in 9 quarters. The position peaked at $30.6M in Q2 2023. 245 funds tracked by Wall St. Rank hold AMPH as of Q2 2025.

Granite Investment Partners reported no remaining Amphastar Pharmaceuticals position as of Q2 2025 after selling out during the quarter.
Granite Investment Partners sold 375,778 Amphastar Pharmaceuticals shares in Q2 2025, an estimated $10.9M.
Granite Investment Partners first reported a position in Amphastar Pharmaceuticals in Q1 2023 and held it in 9 quarters.
Granite Investment Partners's Amphastar Pharmaceuticals position peaked at $30.6M in Q2 2023.
245 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q2 2025.

Based on Granite Investment Partners's 13F filing for Q2 2025, filed 13 Aug 2025.