American Superconductor Corp
AMSC Real Time Price USDRecent trades of AMSC by members of U.S. Congress
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Recently reported changes in AMSC holdings by institutional investors
Quarterly net insider trading by AMSC's directors and management
* Insider trading data parsed from SEC Form 4 filings by Quiver Quantitative. Sign up for the Quiver API for real-time access.
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- 6M
- YTD
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- 5Y
- MAX
About
Key Metrics
Return (1d)
Return (30d)
Return (1Y)
CAGR (Total)
Max Drawdown
Beta
Alpha
Sharpe Ratio
Win Rate
Average Win
Average Loss
Annual Volatility
Annual Std Dev
Information Ratio
Treynor Ratio
Total Trades
Metrics Definitions
Disclaimer: The performance results shown are based on historical backtesting and are hypothetical in nature. Backtested performance does not represent actual trading and does not account for all market factors that may affect execution, such as liquidity, slippage, and changing market conditions. Past performance is not necessarily indicative of future results. There is no guarantee that any trading strategy will be profitable or avoid losses.
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Alpha
Measures a portfolio's risk-adjusted performance against that of its benchmark
Learn More about Alpha -
Annual Standard Deviation
Measures how much the portfolio's total return varies from its mean or average.
Learn More about Annual Standard Deviation -
Annual Volatility
A statistical measure of the dispersion of returns for the portfolio.
Learn More about Annual Volatility -
Average Win
The average return (%) for trades that resulted in a positive return.
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Average Loss
The average return (%) for trades that resulted in a negative return.
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Beta
A measure of the volatility of the portfolio compared to the market as a whole.
Learn More about Beta -
CAGR
CAGR (Compounded Annual Growth Rate), is the historical annualized rate of return for an investment strategy, throughout the backtest period.
Learn More about CAGR -
Information Ratio
A measurement of portfolio returns beyond the returns of its benchmark compared to the volatility of those returns.
Learn More about Information Ratio -
Max Drawdown
the maximum observed loss from a peak to a trough of a portfolio, before a new peak is attained.
Learn More about Max Drawdown -
Sharpe Ratio
The Sharpe Ratio is a measure of historical risk-adjusted return, which quantifies the amount of return that an investor received per unit of risk.
Learn More about Sharpe Ratio -
Total Trades
The total number of trades made by this strategy.
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Treynor Ratio
Attempts to measure how successful an investment is in providing compensation to investors for taking on investment risk.
Learn More about Treynor Ratio -
Win Rate
The percentage of total trades that resulted in a positive return.
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Government lobbying spending instances
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$30,000 Oct 22, 2018 Issue: Trade (domestic/foreign) Financial Institutions/Investments/Securities Defense Budget/Appropriations
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$10,000 Oct 22, 2018 Issue: Budget/Appropriations Trade (domestic/foreign)
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$70,000 Jul 20, 2018 Issue: Financial Institutions/Investments/Securities Budget/Appropriations Trade (domestic/foreign) Defense
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$50,000 Jul 20, 2018 Issue: Trade (domestic/foreign) Budget/Appropriations
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$40,000 Apr 23, 2018 Issue: Trade (domestic/foreign) Financial Institutions/Investments/Securities Defense Budget/Appropriations
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$20,000 Apr 20, 2018 Issue: Trade (domestic/foreign) Budget/Appropriations
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$10,000 Jan 22, 2018 Issue: Trade (domestic/foreign)
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$30,000 Jan 22, 2018 Issue: Financial Institutions/Investments/Securities Defense Trade (domestic/foreign)
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$20,000 Oct 17, 2017 Issue: Financial Institutions/Investments/Securities Defense
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$20,000 Jul 18, 2017 Issue: Defense Financial Institutions/Investments/Securities
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$20,000 Apr 20, 2017 Issue: Defense Financial Institutions/Investments/Securities
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$20,000 Jan 18, 2017 Issue: Defense Financial Institutions/Investments/Securities
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$20,000 Oct 18, 2016 Issue: Defense Financial Institutions/Investments/Securities
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$10,000 Jul 20, 2016 Issue: Taxation/Internal Revenue Code
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$30,000 Jul 18, 2016 Issue: Defense Financial Institutions/Investments/Securities Taxation/Internal Revenue Code
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$10,000 Apr 20, 2016 Issue: Taxation/Internal Revenue Code
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$30,000 Apr 19, 2016 Issue: Defense Financial Institutions/Investments/Securities Taxation/Internal Revenue Code
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$10,000 Jan 20, 2016 Issue: Taxation/Internal Revenue Code
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$30,000 Jan 15, 2016 Issue: Defense Financial Institutions/Investments/Securities Taxation/Internal Revenue Code
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$10,000 Oct 20, 2015 Issue: Taxation/Internal Revenue Code
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$10,000 Oct 20, 2015 Issue: Taxation/Internal Revenue Code
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$30,000 Oct 15, 2015 Issue: Financial Institutions/Investments/Securities Defense Taxation/Internal Revenue Code
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$30,000 Jul 15, 2015 Issue: Financial Institutions/Investments/Securities Defense Taxation/Internal Revenue Code
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$30,000 Apr 20, 2015 Issue: Defense Financial Institutions/Investments/Securities Taxation/Internal Revenue Code
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$10,000 Apr 19, 2015 Issue: Taxation/Internal Revenue Code
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$30,000 Jan 19, 2015 Issue: Defense Taxation/Internal Revenue Code
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$10,000 Jan 13, 2015 Issue: Taxation/Internal Revenue Code
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$30,000 Oct 20, 2014 Issue: Defense Taxation/Internal Revenue Code
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$10,000 Oct 18, 2014 Issue: Taxation/Internal Revenue Code
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$30,000 Jul 20, 2014 Issue: Taxation/Internal Revenue Code Defense
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$10,000 Jul 19, 2014 Issue: Taxation/Internal Revenue Code
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$30,000 Apr 21, 2014 Issue: Defense Taxation/Internal Revenue Code
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$10,000 Apr 20, 2014 Issue: Taxation/Internal Revenue Code
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$10,000 Jan 20, 2014 Issue: Taxation/Internal Revenue Code
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$30,000 Jan 20, 2014 Issue: Defense Taxation/Internal Revenue Code
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$10,000 Oct 20, 2013 Issue: Taxation/Internal Revenue Code
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$30,000 Oct 17, 2013 Issue: Taxation/Internal Revenue Code Defense
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$30,000 Jul 22, 2013 Issue: Taxation/Internal Revenue Code Defense
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$10,000 Jul 21, 2013 Issue: Taxation/Internal Revenue Code
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$10,000 Apr 22, 2013 Issue: Taxation/Internal Revenue Code
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$30,000 Apr 22, 2013 Issue: Defense Taxation/Internal Revenue Code
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$30,000 Jan 22, 2013 Issue: Defense Taxation/Internal Revenue Code
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$20,000 Jan 18, 2013 Issue: Taxation/Internal Revenue Code
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$20,000 Oct 22, 2012 Issue: Defense
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$30,000 Jul 20, 2012 Issue: Defense
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$30,000 Apr 27, 2012 Issue: Defense
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$40,000 Jan 24, 2012 Issue: Energy/Nuclear Taxation/Internal Revenue Code Defense
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$40,000 Nov 15, 2011 Issue: Taxation/Internal Revenue Code Defense Energy/Nuclear
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$40,000 Jul 28, 2011 Issue: Defense Taxation/Internal Revenue Code Energy/Nuclear
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$70,000 Apr 19, 2011 Issue: Defense Taxation/Internal Revenue Code Energy/Nuclear
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$70,000 Jan 20, 2011 Issue: Defense Taxation/Internal Revenue Code Energy/Nuclear
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$80,000 Dec 14, 2010 Issue: Taxation/Internal Revenue Code Energy/Nuclear Defense
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$80,000 Oct 20, 2010 Issue: Energy/Nuclear Defense Taxation/Internal Revenue Code
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$110,000 May 04, 2010 Issue: Energy/Nuclear Defense Taxation/Internal Revenue Code
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$120,000 Jan 21, 2010 Issue: Energy/Nuclear Taxation/Internal Revenue Code Defense
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$5,000 Jan 15, 2010 Issue: Energy/Nuclear
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$110,000 Oct 20, 2009 Issue: Taxation/Internal Revenue Code Defense Energy/Nuclear
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$10,000 Oct 19, 2009 Issue: Energy/Nuclear
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$15,000 Jul 20, 2009 Issue: Energy/Nuclear
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$130,000 Jul 17, 2009 Issue: Energy/Nuclear Taxation/Internal Revenue Code Defense
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$70,000 Apr 20, 2009 Issue: Defense
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$70,000 Jan 21, 2009 Issue: Defense
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$20,000 Aug 10, 2005 Issue: Utilities Energy/Nuclear
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$20,000 Feb 14, 2005 Issue: Energy/Nuclear Utilities
Former government officials who have lobbied for AMSC
11 former government officials from 6 congressional offices at 3 lobbying firms have lobbied for AMSC, most recently Jul 21, 2025.
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Vivian Bridges House New Intern, Rep Bill Foster; Law Clerk, Sen Jon Ossoff/Sen Judiciary Cmte -
Jasper Noble Senate New Intern, Sen. Chuck Schumer; Law Clerk, Sen. Richard Blumenthal/Sen Judiciary Cmte; Law Clerk, Sen. Jon Ossoff/Sen. Judiciary Cmte; Law Clerk, Sen Finance Cmte -
Scott Gelbman Senate New Staff Assistant/Legislative Correspondent/Legislative Assistant, Senator Chuck Schumer
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Sarah Swanson Senate New Intern, Senator Chris Murphy; Intern/Staff Assistant/Executive Assistant, Senator Tom Carper -
Ryan Carney House New Chief of Staff, Rep. Tom MacArthur; Chief of Staff, Rep. Bryan Steil; Staff Director, House Select Committee on Economic Disparity and Fairness in Growth; Senior Advisor, Committee on House Administration -
Matthew Manning House New Legislative Director, Congressman Jimmy Panetta; Military Legislative Assistant, Congressman Brad Ashford; Legislative Aid, Senator Mark Udall -
Andrew Tabler Congress New Research Assistant, House Armed Services Committee; Deputy Assistant Secretary of Defense for Senate Affairs
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Dennis Potter Senate New Staff Asst/LC, Senator Gramm
AMSC Estimated quarterly lobbying spending
AMSC Revenue by Segment or Geography
New AMSC patent grants
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Patent Title: Electro-formed metal foils May. 19, 2026
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Patent Title: Electro-formed metal foils Jul. 23, 2024
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Patent Title: Electrical power system for a watercraft Oct. 24, 2023
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Patent Title: High temperature superconducting wires having increased engineering current densities May. 23, 2023
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Patent Title: Load re-balancing on a multi-phase power system Nov. 22, 2022
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Patent Title: Roll-to-roll apparatus for processing metal tapes with a ceramic coating Jul. 19, 2022
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Patent Title: High temperature superconductor wire bundling system and method Feb. 06, 2018
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Patent Title: Electricity transmission cooling system May. 16, 2017
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Patent Title: Electricity transmission cooling system May. 09, 2017
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Patent Title: Reducing photovoltaic array voltage during inverter re-enablement Oct. 27, 2015
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Patent Title: Electricity transmission cooling system May. 19, 2015
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Patent Title: Reduced-loss bucking bundle low voltage cable Apr. 21, 2015
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Patent Title: Fault current limiting hts cable and method of configuring same Nov. 11, 2014
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Patent Title: Wide electrical conductor having high c-axis strength Jul. 29, 2014
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Patent Title: Interface device for a high temperature superconductor degaussing system junction box May. 20, 2014
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Patent Title: Mitigating the effects of defects in high temperature semiconductor wires Mar. 25, 2014
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Patent Title: Thyristor gate pulses in static var compensator Jan. 14, 2014
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Patent Title: Parallel connected hts utility device and method of using same Sep. 10, 2013
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Patent Title: System for quick disconnect termination or connection for cryogenic transfer lines with simultaneous electrical connection Aug. 27, 2013
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Patent Title: Superconducting cable assembly and method of assembly Jul. 02, 2013
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Patent Title: Thick oxide film by single coating Apr. 23, 2013
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Patent Title: Thick superconductor films with improved performance Jan. 15, 2013
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Patent Title: Generator with ferromagnetic teeth Nov. 27, 2012
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Patent Title: Electricity transmission cooling system Oct. 02, 2012
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Patent Title: Low resistance splice for high temperature superconductor wires Sep. 11, 2012
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Patent Title: Centralized power conditioning Aug. 21, 2012
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Patent Title: Two-sided splice for high temperature superconductor laminated wires Jun. 05, 2012
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Patent Title: Power electronic assembly with slotted heatsink May. 29, 2012
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Patent Title: Mesh-type stabilizer for filamentary coated superconductors Mar. 27, 2012
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Patent Title: Power converter with dual ring network control Feb. 21, 2012
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Patent Title: Low voltage ride through Feb. 21, 2012
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Patent Title: Composite substrates for high temperature superconductors having improved properties Feb. 14, 2012
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Patent Title: High-current, compact flexible conductors containing high temperature superconducting tapes Oct. 25, 2011
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Patent Title: Torque limiting coupling for wind turbine Oct. 11, 2011
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Patent Title: Low resistance splice for high temperature superconductor wires Oct. 04, 2011
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Patent Title: Power conversion systems Aug. 02, 2011
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Patent Title: Static var corrector May. 10, 2011
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Patent Title: Precursor solutions and methods of using same May. 10, 2011
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Patent Title: Fault current limiting hts cable and method of configuring same Mar. 08, 2011
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Patent Title: High temperature superconductors having planar magnetic flux pinning centers and methods for making the same Mar. 08, 2011
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Patent Title: Systems and methods for solution-based deposition of metallic cap layers for high temperature superconductor wires Feb. 22, 2011
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Patent Title: Torque support member for rotating electrical machine Nov. 16, 2010
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Patent Title: Architecture for high temperature superconductor wire Oct. 19, 2010
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Patent Title: Superconducting machine stator Aug. 31, 2010
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Patent Title: High temperature superconducting wires and coils Aug. 24, 2010
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Patent Title: Power system having a voltage regulator with a notch filter Aug. 17, 2010
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Patent Title: Mesh-type stabilizer for filamentary coated superconductors Jul. 27, 2010
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Patent Title: Parallel hts transformer device May. 25, 2010
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Patent Title: Voltage regulation of a utility power network Mar. 30, 2010
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Patent Title: Fabrication of sealed high temperature superconductor wires Mar. 09, 2010
Federal grants, loans, and purchases
Estimated quarterly amount awarded to AMSC from public contracts
Recent insights relating to AMSC
Recent picks made for AMSC stock on CNBC
ETFs with the largest estimated holdings in AMSC
- ... Highest Price Target
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- Is $AMSC stock a Buy, Sell, or Hold?
- What is the price target for $AMSC stock?
* Analyst consensus is not financial advice. Please see our data disclaimers .
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Shareholder
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- Who owns $AMSC stock?
- Who owns the most shares of $AMSC stock?
- What funds own $AMSC stock?
* These are estimates based on data taken from SEC filings. There may be inaccuracies due to parsing errors, accidental double-counting, incorrect classification of indirectly owned shares, or any other number of issues.
The Quiver Smart Score combines our data on Congress Trading, Lobbying, Insider Trading, CNBC Mentions and more to provide a comprehensive view of the strength of a stock's underlying data.
The Smart Score grades stocks on a scale of 1 (weakest) to 10 (strongest) based on the strength of the underlying data.Sign Up to view AMSC Smart Score
See concise summaries of analyst reports, presenting both bullish and bearish arguments for a stock.
Example:
The Bulls Say summary highlights positive aspects of the stock.
The Bears Say summary points out potential risks and negative aspects of the stock.
American Superconductor Corp generates the ideas, technologies, and solutions that meet the world's demand for smarter, cleaner, and energy. Through its Windtec Solutions, the company enables manufacturers to launch wind turbines quickly, effectively, and profitably. Through its Gridtec Solutions, the company provides engineering planning services and grid systems that optimize network reliability, efficiency, and performance. The company's segment includes Grid and Wind. It generates maximum revenue from the Grid segment.
- Address Devens, MA
- Market Cap 1.4 billion
- Employees 1,195
- Industrial Classification Motors & Generators
American Superconductor Corp (AMSC) Historical Stock Prices
Daily open, high, low, close, adjusted close and volume for American Superconductor Corp (AMSC).
Quiver Premium charts AMSC's full daily history since 2014 with each congressional purchase and sale and every open-market insider purchase marked on the price line, with hover details for each trade.
Upgrade to Premium| Date | Open | High | Low | Close | Adj. Close | Volume |
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Open, high, low and close are the prices as traded. Adjusted close accounts for splits and dividends, and is what the chart and returns use. Where a company changed its ticker, its history under the old symbol is included.
The Quiver API serves daily prices back to 2014 alongside congressional trades, insider trades, 13F holdings and lobbying, all under one key and inside Claude or ChatGPT through our MCP server.
Explore the Quiver APIWe estimate that -- received a compensation of -- in --, making them the highest paid executive at AMSC, per a recent SEC DEF 14A filing. We estimate that the median employee at AMERICAN SUPERCONDUCTOR CORP /DE/ is paid $93,320.
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