GWH (ESS Tech) 1-Year Sharpe Ratio: N/A (As of Aug. 20, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

GWH ESS Tech Inc GWH
31 GF Score
Price $0.69
GF Value $1.54
Valuation Possible Value Trap
! 3 Warning Signs
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What is ESS Tech 1-Year Sharpe Ratio?

The 1-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past year. As of today (2026-08-20), ESS Tech's 1-Year Sharpe Ratio is Not available.

ESS Tech  (NYSE:GWH) 1-Year Sharpe Ratio Explanation

The 1-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past year. It is calculated as the annualized result of the average monthly excess return divided by its standard deviation over the past year. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.

ESS Tech 1-Year Sharpe Ratio Related Terms

GWH vs EPOW, DFLI, SDST: 1-Year Sharpe Ratio Comparison

For the Electrical Equipment & Parts subindustry, ESS Tech's 1-Year Sharpe Ratio, along with its competitors' market caps and 1-Year Sharpe Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.

ESS Tech 1-Year Sharpe Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, ESS Tech's 1-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where ESS Tech's 1-Year Sharpe Ratio falls into.


GWH
31GF Score
ESS Tech Inc GWH
1-Year Sharpe Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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ESS Tech 1-Year Sharpe Ratio Calculation

The 1-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset. A stock / portfolio's 1-Year Sharpe Ratio can be calculated by dividing the difference between the one-year returns of the investment and the risk-free rate, by the standard deviation of the investment returns over one year.

Is ESS Tech (GWH) Overvalued in 2026?

Based on GuruFocus' analysis, ESS Tech stock appears to be undervalued. The current stock price of $0.69 is trading 55.5% below its estimated GF Value™ of $1.54. GuruFocus considers ESS Tech to be Possible Value Trap.

Key valuation signals for GWH:

  • 1-Year Sharpe Ratio: N/A
  • GF Value™: $1.54 vs. price of $0.69 (55.5% below fair value)
  • GF Score™: 31/100 with 3 warning signs

No single metric tells the full story. See the GWH stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

ESS Tech Business Description

Other Exchanges GWH.WS:USA
Address 26440 SW Parkway Avenue, Building 83, Wilsonville, OR, USA, 97070
ESS Tech Inc is a long-duration energy storage company specializing in iron flow battery technology. It develops and manufactures long-duration energy storage systems based on iron flow battery technology. The company's batteries use earth-abundant materials, including iron, salt, and water, and are designed for high cycle life and recyclability. It operates as a single business operating segment, which includes all activities related to the design, engineering, and manufacturing of the company's long duration energy storage products. The company's revenue is derived from the sale of its energy storage products and from service contracts.
31GF Score

Get the complete analysis for GWH

1-Year Sharpe Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$0.69
Price
$1.54
GF Value