Historical Stock Price
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Video: Compound Annual Growth Rate (CAGR) Definition
Date Open High Low Close Volume
07/06/2026 $37.61 $39.11 $37.34 $38.13 845.90K
07/07/2026 $37.02 $37.20 $34.50 $35.55 735.90K
07/08/2026 $34.62 $36.17 $34.18 $36.00 831.10K
07/09/2026 $37.66 $37.81 $36.49 $37.17 717.20K
07/10/2026 $37.17 $37.72 $35.76 $35.96 562.40K
American Superconductor Corporation is a provider of megawatt-scale power resiliency solutions. Co.'s solutions include Gridtec, Marinetec and Windtec. Co., through its Gridtec solutions, provides engineering planning services and advanced grid systems that optimize network reliability, efficiency and performance. Co., through its Marinetec solutions, provides ship protection and is developing propulsion and power management solutions designed to help fleets increase system efficiencies, enhance power quality and boost operational safety. Co., through its Windtec solutions, provides wind turbine electronic controls and systems, designs and engineering services.
AMSC historical stock prices picture
American Superconductor (AMSC) has the following price history information. Looking back at AMSC historical stock prices for the last five trading days, on July 06, 2026, AMSC opened at $37.61, traded as high as $39.11 and as low as $37.34, and closed at $38.13. Trading volume was a total of 845.90K shares. On July 07, 2026, AMSC opened at $37.02, traded as high as $37.20 and as low as $34.50, and closed at $35.55. Trading volume was a total of 735.90K shares. On July 08, 2026, AMSC opened at $34.62, traded as high as $36.17 and as low as $34.18, and closed at $36.00. Trading volume was a total of 831.10K shares. On July 09, 2026, AMSC opened at $37.66, traded as high as $37.81 and as low as $36.49, and closed at $37.17. Trading volume was a total of 717.20K shares. On July 10, 2026, AMSC opened at $37.17, traded as high as $37.72 and as low as $35.76, and closed at $35.96. Trading volume was a total of 562.40K shares.

AMSC Historical Stock Prices By Date:

AMSC historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into American Superconductor shares, starting with a $10,000 purchase of AMSC, and working forward through the historical stock price information to today.

Growth of $10,000.00
Without Dividends Reinvested

Start date: 07/12/2016
End date: 07/10/2026
Start price/share: $9.51
End price/share: $35.96
Dividends collected/share: $0.00
Total return: 278.13%
Average Annual Total Return: 14.23%
Starting investment: $10,000.00
Ending investment: $37,826.99
Years: 10.00
Date Close
07/06/2026$38.13
07/07/2026$35.55
07/08/2026$36.00
07/09/2026$37.17
07/10/2026$35.96
AMSC is categorized under the Industrials sector; below are some other companies in the same sector:

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Also explore: AMSC shares outstanding history

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