AllianceBernstein’s Amphastar Pharmaceuticals AMPH Stock Holding History

AllianceBernstein’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 Q1	$1.51M	Sell	56,430 -4,200	-7%	-$103K	﹤0.01%	2148
2025 Q4	$1.62M	Buy	60,630 +10,000	+20%	+$258K	﹤0.01%	2114
2025 Q3	$1.35M	Hold	50,630	–	–	﹤0.01%	2208
2025 Q2	$1.16M	Hold	50,630	–	–	﹤0.01%	2211
2025 Q1	$1.47M	Hold	50,630	–	–	﹤0.01%	2055
2024 Q4	$1.88M	Buy	50,630 +889	+2%	+$40.7K	﹤0.01%	1986
2024 Q3	$2.41M	Sell	49,741 -29	-0.1%	-$1.27K	﹤0.01%	1862
2024 Q2	$1.99M	Buy	49,770 +2,530	+5%	+$105K	﹤0.01%	1956
2024 Q1	$2.07M	Sell	47,240 -29,650	-39%	-$1.53M	﹤0.01%	1901
2023 Q4	$4.76M	Sell	76,890 -55,060	-42%	-$2.89M	﹤0.01%	1514
2023 Q3	$6.07M	Buy	131,950 +81,870	+163%	+$4.47M	﹤0.01%	1337
2023 Q2	$2.88M	Buy	50,080 +5,183	+12%	+$230K	﹤0.01%	1700
2023 Q1	$1.68M	Sell	44,897 -35,547	-44%	-$1.17M	﹤0.01%	1971
2022 Q4	$2.25M	Buy	80,444 +29,955	+59%	+$870K	﹤0.01%	1835
2022 Q3	$1.42M	Buy	50,489 +142	+0.3%	+$4.64K	﹤0.01%	2105
2022 Q2	$1.75M	Buy	50,347 +4,141	+9%	+$148K	﹤0.01%	2025
2022 Q1	$1.66M	Buy	46,206 +153	+0.3%	+$4.34K	﹤0.01%	2198
2021 Q4	$1.07M	Sell	46,053 -41,882	-48%	-$856K	﹤0.01%	2441
2021 Q3	$1.67M	Buy	87,935 +40,265	+84%	+$789K	﹤0.01%	2263
2021 Q2	$961K	Hold	47,670	–	–	﹤0.01%	2548
2021 Q1	$873K	Sell	47,670 -42,213	-47%	-$785K	﹤0.01%	2467
2020 Q4	$1.81M	Buy	89,883 +1,073	+1%	+$20.9K	﹤0.01%	2044
2020 Q3	$1.67M	Sell	88,810 -19,200	-18%	-$387K	﹤0.01%	1946
2020 Q2	$2.43M	Sell	108,010 -180	-0.2%	-$3.3K	﹤0.01%	1738
2020 Q1	$1.61M	Sell	108,190 -1,150	-1%	-$20K	﹤0.01%	1799
2019 Q4	$2.11M	Buy	109,340 +1,400	+1%	+$26.9K	﹤0.01%	1931
2019 Q3	$2.14M	Sell	107,940 -8,250	-7%	-$172K	﹤0.01%	1881
2019 Q2	$2.45M	Buy	116,190 +14,400	+14%	+$301K	﹤0.01%	1842
2019 Q1	$2.08M	Sell	101,790 -21,110	-17%	-$473K	﹤0.01%	1871
2018 Q4	$2.45M	Sell	122,900 -1,200	-1%	-$23.7K	﹤0.01%	1719
2018 Q3	$2.39M	Hold	124,100	–	–	﹤0.01%	1826
2018 Q2	$1.89M	Buy	124,100 +20,530	+20%	+$359K	﹤0.01%	1961
2018 Q1	$1.94M	Sell	103,570 -9,950	-9%	-$187K	﹤0.01%	1842
2017 Q4	$2.18M	Buy	113,520 +67,920	+149%	+$1.27M	﹤0.01%	1795
2017 Q3	$815K	Hold	45,600	–	–	﹤0.01%	2376
2017 Q2	$814K	Sell	45,600 -10,000	-18%	-$159K	﹤0.01%	2399
2017 Q1	$806K	Sell	55,600 -174,730	-76%	-$2.75M	﹤0.01%	2342
2016 Q4	$4.24M	Buy	230,330 +15,910	+7%	+$310K	﹤0.01%	1295
2016 Q3	$4.07M	Buy	214,420 +108,790	+103%	+$1.97M	﹤0.01%	1241
2016 Q2	$1.7M	Buy	105,630 +66,370	+169%	+$936K	﹤0.01%	1857
2016 Q1	$471K	Buy	39,260 +10,240	+35%	+$121K	﹤0.01%	2439
2015 Q4	$413K	Buy	29,020 +320	+1%	+$4.23K	﹤0.01%	2513
2015 Q3	$336K	Buy	28,700 +3,700	+15%	+$55.5K	﹤0.01%	2627
2015 Q2	$440K	Buy	25,000 +17,700	+242%	+$276K	﹤0.01%	2633
2015 Q1	$109K	Buy	+7,300	New	+$97.6K	﹤0.01%	3006

Other funds holding AMPH

BlackRock New York $5.72T AUM 30.48% 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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 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

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

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

BTW

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

AllianceBernstein's AMPH Position: Q1 2026 in Review

AllianceBernstein reduced its Amphastar Pharmaceuticals (AMPH) stake by 6.9% in Q1 2026, selling an estimated $103K and leaving 56,430 shares worth $1.51M. The position accounts for ﹤0.01% of the portfolio, ranked #2148.

AllianceBernstein first reported a position in AMPH in Q1 2015 and has held it in 45 quarters since. The position peaked at $6.07M in Q3 2023. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

AllianceBernstein held 56,430 shares of Amphastar Pharmaceuticals worth $1.51M as of Q1 2026.
AllianceBernstein sold 4,200 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $103K.
Amphastar Pharmaceuticals made up ﹤0.01% of AllianceBernstein's portfolio in Q1 2026, its #2148 holding.
AllianceBernstein first reported a position in Amphastar Pharmaceuticals in Q1 2015 and has held it in 45 quarters since.
AllianceBernstein's Amphastar Pharmaceuticals position peaked at $6.07M in Q3 2023.
215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on AllianceBernstein's 13F filing for Q1 2026, filed 15 May 2026.