John Overdeck’s American Superconductor AMSC Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $3.75M | Sell |
90,340
-78,676
| -47% | -$3.56M | ﹤0.01% | 2419 |
|
|
2026
Q1 | $5.72M | Sell |
169,016
-152,555
| -47% | -$4.81M | ﹤0.01% | 1855 |
|
|
2025
Q4 | $9.25M | Buy |
321,571
+199,948
| +164% | +$8.65M | 0.01% | 1180 |
|
|
2025
Q3 | $7.22M | Sell |
121,623
-1,227
| -1% | -$61.3K | 0.01% | 1177 |
|
|
2025
Q2 | $4.51M | Buy |
122,850
+79,493
| +183% | +$1.95M | 0.01% | 1282 |
|
|
2025
Q1 | $786K | Buy |
43,357
+25,135
| +138% | +$627K | ﹤0.01% | 2309 |
|
|
2024
Q4 | $449K | Sell |
18,222
-628
| -3% | -$17.3K | ﹤0.01% | 2580 |
|
|
2024
Q3 | $445K | Sell |
18,850
-7,550
| -29% | -$174K | ﹤0.01% | 2525 |
|
|
2024
Q2 | $617K | Sell |
26,400
-9,529
| -27% | -$157K | ﹤0.01% | 2263 |
|
|
2024
Q1 | $485K | Buy |
35,929
+17,929
| +100% | +$222K | ﹤0.01% | 2349 |
|
|
2023
Q4 | $201K | Sell |
18,000
-146,572
| -89% | -$1.24M | ﹤0.01% | 2837 |
|
|
2023
Q3 | $1.24M | Buy |
164,572
+154,572
| +1,546% | +$1.28M | ﹤0.01% | 1810 |
|
|
2023
Q2 | $62.6K | Buy |
+10,000
| New | +$48.7K | ﹤0.01% | 2802 |
|
|
2022
Q4 | – | Sell |
-88,817
| Closed | -$389K | – | 2783 |
|
|
2022
Q3 | $389K | Buy |
88,817
+37,612
| +73% | +$195K | ﹤0.01% | 1883 |
|
|
2022
Q2 | $265K | Buy |
+51,205
| New | +$297K | ﹤0.01% | 2071 |
|
|
2021
Q4 | – | Sell |
-15,557
| Closed | -$227K | – | 4236 |
|
|
2021
Q3 | $227K | Sell |
15,557
-30,200
| -66% | -$419K | ﹤0.01% | 3871 |
|
|
2021
Q2 | $796K | Sell |
45,757
-29,901
| -40% | -$478K | ﹤0.01% | 2687 |
|
|
2021
Q1 | $1.43M | Sell |
75,658
-98,431
| -57% | -$2.44M | ﹤0.01% | 1985 |
|
|
2020
Q4 | $4.08M | Buy |
174,089
+54,671
| +46% | +$970K | 0.01% | 1050 |
|
|
2020
Q3 | $1.73M | Buy |
119,418
+94,336
| +376% | +$1.06M | 0.01% | 1388 |
|
|
2020
Q2 | $204K | Buy |
+25,082
| New | +$164K | ﹤0.01% | 2627 |
|
|
2019
Q3 | – | Sell |
-54,311
| Closed | -$504K | – | 3422 |
|
|
2019
Q2 | $504K | Buy |
+54,311
| New | +$578K | ﹤0.01% | 2498 |
|
|
2017
Q2 | – | Sell |
-32,943
| Closed | -$226K | – | 2929 |
|
|
2017
Q1 | $226K | Buy |
+32,943
| New | +$222K | ﹤0.01% | 2675 |
|
|
2014
Q3 | – | Sell |
-2,947
| Closed | -$48K | – | 1727 |
|
|
2014
Q2 | $48K | Buy |
2,947
+268
| +10% | +$3.83K | ﹤0.01% | 2090 |
|
|
2014
Q1 | $43K | Sell |
2,679
-5,388
| -67% | -$96.2K | ﹤0.01% | 1928 |
|
|
2013
Q4 | $132K | Buy |
+8,067
| New | +$150K | ﹤0.01% | 2061 |
|
Other funds holding AMSC
OAM
John Overdeck's AMSC Position: Q2 2026 in Review
John Overdeck reduced its American Superconductor (AMSC) stake by 47% in Q2 2026, selling an estimated $3.56M and leaving 90,340 shares worth $3.75M. The position accounts for ﹤0.01% of the portfolio, ranked #2419.
John Overdeck first reported a position in AMSC in Q4 2013 and has held it in 26 quarters since. The position peaked at $9.25M in Q4 2025. 277 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.
- John Overdeck held 90,340 shares of American Superconductor worth $3.75M as of Q2 2026.
- John Overdeck sold 78,676 American Superconductor shares in Q2 2026, an estimated $3.56M.
- American Superconductor made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #2419 holding.
- John Overdeck first reported a position in American Superconductor in Q4 2013 and has held it in 26 quarters since.
- John Overdeck's American Superconductor position peaked at $9.25M in Q4 2025.
- 277 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.
Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.