State of Wisconsin Investment Board’s Amphastar Pharmaceuticals AMPH Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $341K | Sell |
17,388
-118
| -0.7% | -$2.89K | ﹤0.01% | 2173 |
|
|
2025
Q4 | $469K | Sell |
17,506
-3,828
| -18% | -$98.6K | ﹤0.01% | 1982 |
|
|
2025
Q3 | $569K | Sell |
21,334
-3,998
| -16% | -$103K | ﹤0.01% | 1822 |
|
|
2025
Q2 | $582K | Sell |
25,332
-260
| -1% | -$6.45K | ﹤0.01% | 1800 |
|
|
2025
Q1 | $742K | Sell |
25,592
-57
| -0.2% | -$1.82K | ﹤0.01% | 1602 |
|
|
2024
Q4 | $952K | Sell |
25,649
-33,582
| -57% | -$1.54M | ﹤0.01% | 1550 |
|
|
2024
Q3 | $2.87M | Buy |
59,231
+27,935
| +89% | +$1.23M | 0.01% | 1173 |
|
|
2024
Q2 | $1.25M | Sell |
31,296
-46,532
| -60% | -$1.93M | ﹤0.01% | 1484 |
|
|
2024
Q1 | $3.42M | Buy |
77,828
+35,054
| +82% | +$1.81M | 0.01% | 1092 |
|
|
2023
Q4 | $2.65M | Sell |
42,774
-229
| -0.5% | -$12K | 0.01% | 1168 |
|
|
2023
Q3 | $1.98M | Buy |
43,003
+9,594
| +29% | +$523K | 0.01% | 1257 |
|
|
2023
Q2 | $1.92M | Sell |
33,409
-1,830
| -5% | -$81.1K | 0.01% | 1303 |
|
|
2023
Q1 | $1.32M | Sell |
35,239
-4,052
| -10% | -$133K | ﹤0.01% | 1405 |
|
|
2022
Q4 | $1.1M | Buy |
39,291
+210
| +0.5% | +$6.1K | ﹤0.01% | 1459 |
|
|
2022
Q3 | $1.1M | Sell |
39,081
-2,487
| -6% | -$81.2K | ﹤0.01% | 1507 |
|
|
2022
Q2 | $1.45M | Sell |
41,568
-9,032
| -18% | -$322K | ﹤0.01% | 1465 |
|
|
2022
Q1 | $1.82M | Hold |
50,600
| – | – | ﹤0.01% | 1526 |
|
|
2021
Q4 | $1.18M | Hold |
50,600
| – | – | ﹤0.01% | 1400 |
|
|
2021
Q3 | $962K | Hold |
50,600
| – | – | ﹤0.01% | 1456 |
|
|
2021
Q2 | $1.02M | Hold |
50,600
| – | – | ﹤0.01% | 1443 |
|
|
2021
Q1 | $927K | Hold |
50,600
| – | – | ﹤0.01% | 1389 |
|
|
2020
Q4 | $1.02M | Sell |
50,600
-6,300
| -11% | -$123K | ﹤0.01% | 1322 |
|
|
2020
Q3 | $1.07M | Hold |
56,900
| – | – | ﹤0.01% | 1276 |
|
|
2020
Q2 | $1.28M | Buy |
56,900
+1,600
| +3% | +$29.3K | ﹤0.01% | 1196 |
|
|
2020
Q1 | $821K | Buy |
55,300
+1,500
| +3% | +$26.1K | ﹤0.01% | 1236 |
|
|
2019
Q4 | $1.04M | Hold |
53,800
| – | – | ﹤0.01% | 1232 |
|
|
2019
Q3 | $1.07M | Buy |
53,800
+2,800
| +5% | +$58.3K | ﹤0.01% | 1128 |
|
|
2019
Q2 | $1.08M | Buy |
51,000
+3,200
| +7% | +$66.9K | ﹤0.01% | 1119 |
|
|
2019
Q1 | $977K | Buy |
47,800
+10,900
| +30% | +$244K | ﹤0.01% | 1163 |
|
|
2018
Q4 | $734K | Buy |
36,900
+700
| +2% | +$13.8K | ﹤0.01% | 1217 |
|
|
2018
Q3 | $696K | Hold |
36,200
| – | – | ﹤0.01% | 1321 |
|
|
2018
Q2 | $552K | Buy |
36,200
+8,200
| +29% | +$143K | ﹤0.01% | 1344 |
|
|
2018
Q1 | $525K | Hold |
28,000
| – | – | ﹤0.01% | 1289 |
|
|
2017
Q4 | $539K | Hold |
28,000
| – | – | ﹤0.01% | 1286 |
|
|
2017
Q3 | $500K | Hold |
28,000
| – | – | ﹤0.01% | 1296 |
|
|
2017
Q2 | $500K | Buy |
+28,000
| New | +$444K | ﹤0.01% | 1279 |
|
Other funds holding AMPH
VCM
BTW
State of Wisconsin Investment Board's AMPH Position: Q1 2026 in Review
State of Wisconsin Investment Board reduced its Amphastar Pharmaceuticals (AMPH) stake by 0.67% in Q1 2026, selling an estimated $2.89K and leaving 17,388 shares worth $341K. The position accounts for ﹤0.01% of the portfolio, ranked #2173.
State of Wisconsin Investment Board first reported a position in AMPH in Q2 2017 and has held it in 36 quarters since. The position peaked at $3.42M in Q1 2024. 215 funds tracked by Wall St. Rank hold AMPH as of Q1 2026.
- State of Wisconsin Investment Board held 17,388 shares of Amphastar Pharmaceuticals worth $341K as of Q1 2026.
- State of Wisconsin Investment Board sold 118 Amphastar Pharmaceuticals shares in Q1 2026, an estimated $2.89K.
- Amphastar Pharmaceuticals made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #2173 holding.
- State of Wisconsin Investment Board first reported a position in Amphastar Pharmaceuticals in Q2 2017 and has held it in 36 quarters since.
- State of Wisconsin Investment Board's Amphastar Pharmaceuticals position peaked at $3.42M in Q1 2024.
- 215 funds tracked by Wall St. Rank held Amphastar Pharmaceuticals as of Q1 2026.
Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.