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Round Rock Advisors’s American Superconductor AMSC Stock Holding History

Round Rock Advisors’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
Q2 		$1.1M Buy
26,431
+6,091
+30% +$275K 0.14% 108
2026
Q1 		$689K Buy
20,340
+9,631
+90% +$304K 0.11% 153
2025
Q4 		$308K Buy
+10,709
New +$463K 0.05% 263

Other funds holding AMSC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $4.84B AUM 160.95% 1-Year Est. Return

Round Rock Advisors's AMSC Position: Q2 2026 in Review

Round Rock Advisors increased its American Superconductor (AMSC) stake by 30% in Q2 2026, buying an estimated $275K and bringing the position to 26,431 shares worth $1.1M. The position accounts for 0.14% of the portfolio, ranked #108.

Round Rock Advisors first reported a position in AMSC in Q4 2025 and has held it in 3 quarters since. 279 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

  • Round Rock Advisors held 26,431 shares of American Superconductor worth $1.1M as of Q2 2026.
  • Round Rock Advisors bought 6,091 American Superconductor shares in Q2 2026, an estimated $275K.
  • American Superconductor made up 0.14% of Round Rock Advisors's portfolio in Q2 2026, its #108 holding.
  • Round Rock Advisors first reported a position in American Superconductor in Q4 2025 and has held it in 3 quarters since.
  • 279 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

Based on Round Rock Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.