Janus Henderson Group
AMPH icon

Janus Henderson Group’s Amphastar Pharmaceuticals AMPH Stock Holding History

Janus Henderson 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
Q1 		$331K Hold
16,868
– – ﹤0.01% 2175
2025
Q4 		$452K Hold
16,868
– – ﹤0.01% 2052
2025
Q3 		$449K Hold
16,868
– – ﹤0.01% 2049
2025
Q2 		$387K Sell
16,868
-107,534
-86% -$2.67M ﹤0.01% 2067
2025
Q1 		$3.54M Sell
124,402
-64,945
-34% -$2.07M ﹤0.01% 1016
2024
Q4 		$7.03M Buy
189,347
+42,302
+29% +$1.93M ﹤0.01% 805
2024
Q3 		$7.14M Sell
147,045
-9,219
-6% -$405K ﹤0.01% 770
2024
Q2 		$6.25M Sell
156,264
-2,934
-2% -$122K ﹤0.01% 768
2024
Q1 		$6.99M Sell
159,198
-6,000
-4% -$310K ﹤0.01% 774
2023
Q4 		$10.2M Buy
165,198
+52,618
+47% +$2.76M 0.01% 664
2023
Q3 		$5.18M Buy
112,580
+15,505
+16% +$846K ﹤0.01% 806
2023
Q2 		$5.58M Sell
97,075
-6,866
-7% -$304K ﹤0.01% 837
2023
Q1 		$3.9M Buy
103,941
+96,226
+1,247% +$3.15M ﹤0.01% 956
2022
Q4 		$216K Hold
7,715
– – ﹤0.01% 2153
2022
Q3 		$217K Sell
7,715
-52
-0.7% -$1.7K ﹤0.01% 2370
2022
Q2 		$270K Sell
7,767
-355,737
-98% -$12.7M ﹤0.01% 2143
2022
Q1 		$13M Sell
363,504
-609,689
-63% -$17.3M 0.01% 840
2021
Q4 		$22.7M Buy
973,193
+2,642
+0.3% +$54K 0.01% 756
2021
Q3 		$18.4M Buy
970,551
+415,515
+75% +$8.14M 0.01% 814
2021
Q2 		$11.2M Buy
+555,036
New +$10.5M ﹤0.01% 918

Other funds holding AMPH

BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
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
TD Asset Management Toronto, Ontario, Canada $123B AUM 34.51% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $93.4B AUM 35.1% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Geode Capital Management
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