Janus Henderson Group
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Janus Henderson Group’s American Superconductor AMSC Stock Holding History

Janus Henderson Group’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 		$681K Hold
20,134
– – ﹤0.01% 1862
2025
Q4 		$580K Sell
20,134
-19,216
-49% -$831K ﹤0.01% 1956
2025
Q3 		$2.34M Sell
39,350
-7,411
-16% -$371K ﹤0.01% 1260
2025
Q2 		$1.72M Buy
46,761
+30,961
+196% +$761K ﹤0.01% 1361
2025
Q1 		$297K Hold
15,800
– – ﹤0.01% 2208
2024
Q4 		$389K Hold
15,800
– – ﹤0.01% 2149
2024
Q3 		$373K Buy
+15,800
New +$364K ﹤0.01% 2167

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

Janus Henderson Group's AMSC Position: Q1 2026 in Review

Janus Henderson Group held its American Superconductor (AMSC) position steady in Q1 2026 at 20,134 shares worth $681K. The position accounts for ﹤0.01% of the portfolio, ranked #1862.

Janus Henderson Group first reported a position in AMSC in Q3 2024 and has held it in 7 quarters since. The position peaked at $2.34M in Q3 2025. 244 funds tracked by Wall St. Rank hold AMSC as of Q1 2026.

  • Janus Henderson Group held 20,134 shares of American Superconductor worth $681K as of Q1 2026.
  • Janus Henderson Group left its American Superconductor share count unchanged in Q1 2026.
  • American Superconductor made up ﹤0.01% of Janus Henderson Group's portfolio in Q1 2026, its #1862 holding.
  • Janus Henderson Group first reported a position in American Superconductor in Q3 2024 and has held it in 7 quarters since.
  • Janus Henderson Group's American Superconductor position peaked at $2.34M in Q3 2025.
  • 244 funds tracked by Wall St. Rank held American Superconductor as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.