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Essex Investment Management’s American Superconductor AMSC Stock Holding History

Essex Investment Management’s Portfolio AMSC Stock Details AMSC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$7.7M Buy
227,558
+12,404
+6% +$391K 1.22% 18
2025
Q4 		$6.19M Sell
215,154
-30,427
-12% -$1.32M 0.94% 30
2025
Q3 		$14.6M Sell
245,581
-100,461
-29% -$5.02M 2.23% 3
2025
Q2 		$12.7M Sell
346,042
-26,179
-7% -$643K 2.31% 2
2025
Q1 		$6.75M Sell
372,221
-57,655
-13% -$1.44M 1.41% 9
2024
Q4 		$10.6M Sell
429,876
-34,630
-7% -$955K 1.9% 2
2024
Q3 		$11M Sell
464,506
-113,120
-20% -$2.61M 1.91% 1
2024
Q2 		$13.5M Sell
577,626
-6,298
-1% -$104K 2.53% 1
2024
Q1 		$7.89M Sell
583,924
-40,094
-6% -$497K 1.56% 6
2023
Q4 		$6.95M Sell
624,018
-76,815
-11% -$649K 1.37% 10
2023
Q3 		$5.29M Buy
+700,833
New +$5.82M 0.86% 22
2021
Q1 		– Sell
-161,994
Closed -$3.79M – 450
2020
Q4 		$3.79M Sell
161,994
-19,113
-11% -$339K 0.47% 62
2020
Q3 		$2.62M Buy
181,107
+5,726
+3% +$64K 0.38% 72
2020
Q2 		$1.43M Sell
175,381
-64,948
-27% -$425K 0.23% 140
2020
Q1 		$1.32M Buy
240,329
+16,270
+7% +$112K 0.27% 123
2019
Q4 		$1.76M Buy
+224,059
New +$1.8M 0.22% 159
2017
Q4 		– Sell
-17,167
Closed -$78K – 358
2017
Q3 		$78K Buy
+17,167
New +$66.6K 0.01% 350

Other funds holding AMSC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $3.39B AUM 105.5% 1-Year Est. Return
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return

Essex Investment Management's AMSC Position: Q1 2026 in Review

Essex Investment Management increased its American Superconductor (AMSC) stake by 5.8% in Q1 2026, buying an estimated $391K and bringing the position to 227,558 shares worth $7.7M. The position accounts for 1.22% of the portfolio, ranked #18.

Essex Investment Management first reported a position in AMSC in Q3 2017 and has held it in 17 quarters since. The position peaked at $14.6M in Q3 2025. 244 funds tracked by Wall St. Rank hold AMSC as of Q1 2026.

  • Essex Investment Management held 227,558 shares of American Superconductor worth $7.7M as of Q1 2026.
  • Essex Investment Management bought 12,404 American Superconductor shares in Q1 2026, an estimated $391K.
  • American Superconductor made up 1.22% of Essex Investment Management's portfolio in Q1 2026, its #18 holding.
  • Essex Investment Management first reported a position in American Superconductor in Q3 2017 and has held it in 17 quarters since.
  • Essex Investment Management's American Superconductor position peaked at $14.6M in Q3 2025.
  • 244 funds tracked by Wall St. Rank held American Superconductor as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.