California State Teachers Retirement System (CalSTRS)
AMPH icon

California State Teachers Retirement System (CalSTRS)’s Amphastar Pharmaceuticals AMPH Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$554K Sell
28,299
-7,499
-21% -$183K ﹤0.01% 2028
2025
Q4 		$959K Sell
35,798
-81
-0.2% -$2.09K ﹤0.01% 1820
2025
Q3 		$956K Buy
35,879
+2
+0% +$52 ﹤0.01% 1801
2025
Q2 		$824K Sell
35,877
-492
-1% -$12.2K ﹤0.01% 1845
2025
Q1 		$1.05M Hold
36,369
– – ﹤0.01% 1669
2024
Q4 		$1.35M Sell
36,369
-595
-2% -$27.2K ﹤0.01% 1617
2024
Q3 		$1.79M Sell
36,964
-1,153
-3% -$50.6K ﹤0.01% 1460
2024
Q2 		$1.52M Sell
38,117
-152
-0.4% -$6.3K ﹤0.01% 1534
2024
Q1 		$1.68M Sell
38,269
-2,886
-7% -$149K ﹤0.01% 1522
2023
Q4 		$2.55M Sell
41,155
-1,368
-3% -$71.9K ﹤0.01% 1293
2023
Q3 		$1.96M Sell
42,523
-4,041
-9% -$220K ﹤0.01% 1403
2023
Q2 		$2.68M Sell
46,564
-1,652
-3% -$73.2K ﹤0.01% 1321
2023
Q1 		$1.81M Sell
48,216
-1,193
-2% -$39.1K ﹤0.01% 1547
2022
Q4 		$1.38M Buy
49,409
+385
+0.8% +$11.2K ﹤0.01% 1700
2022
Q3 		$1.38M Sell
49,024
-727
-1% -$23.7K ﹤0.01% 1687
2022
Q2 		$1.73M Buy
49,751
+1,383
+3% +$49.4K ﹤0.01% 1578
2022
Q1 		$1.74M Sell
48,368
-4,056
-8% -$115K ﹤0.01% 1717
2021
Q4 		$1.22M Buy
52,424
+1,558
+3% +$31.9K ﹤0.01% 2037
2021
Q3 		$967K Sell
50,866
-235
-0.5% -$4.6K ﹤0.01% 2165
2021
Q2 		$1.03M Sell
51,101
-3,844
-7% -$72.4K ﹤0.01% 2202
2021
Q1 		$1.01M Sell
54,945
-198
-0.4% -$3.68K ﹤0.01% 2141
2020
Q4 		$1.11M Hold
55,143
– – ﹤0.01% 1971
2020
Q3 		$1.03M Buy
55,143
+950
+2% +$19.1K ﹤0.01% 1845
2020
Q2 		$1.22M Hold
54,193
– – ﹤0.01% 1756
2020
Q1 		$804K Sell
54,193
-128
-0.2% -$2.23K ﹤0.01% 1801
2019
Q4 		$1.05M Sell
54,321
-1,591
-3% -$30.5K ﹤0.01% 1933
2019
Q3 		$1.11M Buy
55,912
+668
+1% +$13.9K ﹤0.01% 1877
2019
Q2 		$1.17M Buy
55,244
+1,406
+3% +$29.4K ﹤0.01% 1873
2019
Q1 		$1.1M Sell
53,838
-3,135
-6% -$70.2K ﹤0.01% 1881
2018
Q4 		$1.13M Buy
56,973
+2,562
+5% +$50.5K ﹤0.01% 1815
2018
Q3 		$1.05M Sell
54,411
-3
-0% -$53 ﹤0.01% 2025
2018
Q2 		$830K Sell
54,414
-824
-1% -$14.4K ﹤0.01% 2166
2018
Q1 		$1.04M Sell
55,238
-1,970
-3% -$37K ﹤0.01% 1954
2017
Q4 		$1.1M Sell
57,208
-805
-1% -$15K ﹤0.01% 1949
2017
Q3 		$1.04M Sell
58,013
-6,320
-10% -$104K ﹤0.01% 1985
2017
Q2 		$1.15M Sell
64,333
-5,800
-8% -$92K ﹤0.01% 1957
2017
Q1 		$1.02M Sell
70,133
-3,300
-4% -$51.9K ﹤0.01% 2064
2016
Q4 		$1.35M Sell
73,433
-1,900
-3% -$37K ﹤0.01% 1916
2016
Q3 		$1.43M Buy
75,333
+700
+0.9% +$12.7K ﹤0.01% 1848
2016
Q2 		$1.2M Buy
74,633
+7,291
+11% +$103K ﹤0.01% 1925
2016
Q1 		$808K Buy
67,342
+8,511
+14% +$100K ﹤0.01% 2137
2015
Q4 		$837K Buy
58,831
+1,009
+2% +$13.3K ﹤0.01% 2102
2015
Q3 		$676K Sell
57,822
-200
-0.3% -$3K ﹤0.01% 2223
2015
Q2 		$1.02M Buy
58,022
+40,849
+238% +$637K ﹤0.01% 2088
2015
Q1 		$257K Hold
17,173
– – ﹤0.01% 2800
2014
Q4 		$199K Buy
17,173
+73
+0.4% +$795 ﹤0.01% 2921
2014
Q3 		$199K Buy
+17,100
New +$178K ﹤0.01% 2906

Other funds holding AMPH

BlackRock
BlackRock New York $5.72T 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 $100B 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

California State Teachers Retirement System (CalSTRS)'s AMPH Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) reduced its Amphastar Pharmaceuticals (AMPH) stake by 21% in Q1 2026, selling an estimated $183K and leaving 28,299 shares worth $554K. The position accounts for ﹤0.01% of the portfolio, ranked #2028.

California State Teachers Retirement System (CalSTRS) first reported a position in AMPH in Q3 2014 and has held it in 47 quarters since. The position peaked at $2.68M in Q2 2023. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 28,299 shares of Amphastar Pharmaceuticals worth $554K as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) sold 7,499 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $183K.
  • Amphastar Pharmaceuticals made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #2028 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Amphastar Pharmaceuticals in Q3 2014 and has held it in 47 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Amphastar Pharmaceuticals position peaked at $2.68M in Q2 2023.
  • 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.