NYSE:GWH ESS Tech (GWH) Stock Price, News & Analysis $0.88 -0.03 (-3.62%) Closing price 05/18/2026 03:59 PM EasternExtended Trading$0.88 +0.00 (+0.11%) As of 07:23 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more. Add Compare Share Share Stock Analysis Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock About ESS Tech Stock (NYSE:GWH) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get ESS Tech alerts:Sign Up Key Stats Today's Range$0.83▼$0.9450-Day Range$0.78▼$1.3552-Week Range$0.57▼$13.87Volume536,960 shsAverage Volume1.11 million shsMarket Capitalization$25.78 millionP/E RatioN/ADividend YieldN/APrice Target$2.00Consensus RatingHold Company Overview ESS Tech, Inc. (NYSE: GWH) is a Portland, Oregon‐based company specializing in long‐duration iron flow battery energy storage solutions. The company’s core business centers on the design, manufacture and deployment of modular battery systems that store electricity using an iron‐chloride electrochemical process. These systems are engineered to support grid operators, utilities, commercial and industrial customers in integrating renewable power, managing peak loads and ensuring reliable back‐up power. At the heart of ESS Tech’s offering is its “Energy Warehouse,” a containerized flow battery system featuring non‐toxic, fully recyclable materials and a simple architecture that separates energy storage capacity from power output. This design enables multi‐hour discharge durations, rapid deployment and a long operational lifespan with minimal maintenance. ESS Tech also provides project engineering, system integration and ongoing field services to optimize performance over the life of each installation. ESS Tech serves markets across North America, Europe, Asia and Australia, where long‐duration storage is increasingly sought to complement solar and wind generation. Its customers include utilities aiming to smooth renewable intermittency, developers of microgrid projects in remote locations and commercial users seeking to reduce demand charges. The company’s modular approach allows for scalable deployments, from small‐scale C&I sites to multi‐megawatt grid installations. Founded in 2011, ESS Tech emerged from applied research in flow battery chemistry and has since advanced through multiple private funding rounds. In early 2023, the company completed a business combination transaction and began trading on the New York Stock Exchange under the ticker GWH. ESS Tech is led by an executive team with extensive experience in energy technology, aiming to commercialize affordable and sustainable storage solutions that support the global transition to renewable energy.AI Generated. May Contain Errors. Read More ESS Tech Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks47th Percentile Overall ScoreGWH MarketRank™: ESS Tech scored higher than 47% of companies evaluated by MarketBeat, and ranked 452nd out of 630 stocks in the computer and technology sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's Opinion3.4 / 5Analyst RatingHold Consensus RatingESS Tech has received a consensus rating of Hold. The company's average rating score is 2.00, and is based on no strong buy ratings, 1 buy rating, 1 hold rating, and 1 sell rating.Upside PotentialESS Tech has a consensus price target of $2.00, representing about 128.1% upside from its current price of $0.88.Amount of Analyst CoverageESS Tech has only been the subject of 2 research reports in the past 90 days.Read more about ESS Tech's stock forecast and price target. Earnings and Valuation0.6 / 5Proj. Earnings GrowthGrowing Earnings GrowthEarnings for ESS Tech are expected to grow in the coming year, from ($1.00) to ($0.68) per share.Price to Earnings Ratio vs. the MarketThe P/E ratio of ESS Tech is -0.26, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Earnings Ratio vs. SectorThe P/E ratio of ESS Tech is -0.26, which means that its earnings are negative and its P/E ratio cannot be compared to companies with positive earnings.Price to Book Value per Share RatioESS Tech has a P/B Ratio of 2.25. P/B Ratios below 3 indicates that a company is reasonably valued with respect to its assets and liabilities. Short Interest4.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted5.91% of the float of ESS Tech has been sold short.Short Interest Ratio / Days to CoverESS Tech has a short interest ratio ("days to cover") of 3.1, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in ESS Tech has recently decreased by 21.91%, indicating that investor sentiment is improving significantly. Dividend0.0 / 5Dividend StrengthN/A Dividend YieldESS Tech does not currently pay a dividend.Dividend GrowthESS Tech does not have a long track record of dividend growth. News and Social Media0.6 / 5News SentimentN/A News Coverage This WeekMarketBeat has tracked 1 news article for ESS Tech this week, compared to 1 article on an average week.Search InterestOnly 2 people have searched for GWH on MarketBeat in the last 30 days. This is a decrease of -33% compared to the previous 30 days.MarketBeat Follows5 people have added ESS Tech to their MarketBeat watchlist in the last 30 days. Company Ownership1.3 / 5Insider TradingSelling Shares Insider Buying vs. Insider SellingIn the past three months, ESS Tech insiders have sold more of their company's stock than they have bought. Specifically, they have bought $0.00 in company stock and sold $4,635.00 in company stock.Percentage Held by Insiders1.40% of the stock of ESS Tech is held by insiders.Percentage Held by Institutions46.77% of the stock of ESS Tech is held by institutions. High institutional ownership can be a signal of strong market trust in this company.Read more about ESS Tech's insider trading history. Receive GWH Stock News and Ratings via Email Sign-up to receive the latest news and ratings for ESS Tech and its competitors with MarketBeat's FREE daily newsletter. 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Check Out the HintsMay 14, 2026 | insidermonkey.comESS Tech (NYSE:GWH) vs. Universal Electronics (NASDAQ:UEIC) Head to Head SurveyMay 10, 2026 | americanbankingnews.com$30 stock to buy before Starlink goes public (WATCH NOW!)In the next 3 minutes… James Altucher – legendary investor and venture capitalist… And someone who’s known for playing his cards “close to the vest”… Is going to give you the name and ticker symbol of a company he believes will skyrocket thanks to the coming Starlink IPO…May 19 at 1:00 AM | Paradigm Press (Ad)ESS Tech, Inc. (GWH) Q1 2026 Earnings Call TranscriptMay 8, 2026 | seekingalpha.comESS Tech, Inc. Announces First Quarter 2026 Financial ResultsMay 7, 2026 | businesswire.comESS Tech Inc (GWH) Q1 2026 Earnings Report Preview: What To Look ForMay 6, 2026 | finance.yahoo.comESS Highlights Third-Party Utility Validating Iron Flow Battery TechnologyMay 6, 2026 | businesswire.comESS Announces Successful Commissioning of Long-Duration Iron Flow Battery Systems at Turlock Irrigation District Solar-Over-Canal ProjectMay 5, 2026 | businesswire.comSee More Headlines GWH Stock Analysis - Frequently Asked Questions How have GWH shares performed this year? ESS Tech's stock was trading at $1.84 at the start of the year. Since then, GWH shares have decreased by 52.3% and is now trading at $0.8770. How were ESS Tech's earnings last quarter? ESS Tech, Inc. (NYSE:GWH) posted its quarterly earnings data on Thursday, May, 7th. The company reported ($0.54) earnings per share for the quarter, missing analysts' consensus estimates of ($0.29) by $0.25. The company had revenue of $0.13 million for the quarter, compared to analyst estimates of $0.40 million. ESS Tech had a negative trailing twelve-month return on equity of 1,251.69% and a negative net margin of 1,045.28%. Read the conference call transcript. When did ESS Tech's stock split? ESS Tech shares reverse split before market open on Monday, August 26th 2024.The 1-15 reverse split was announced on Monday, August 26th 2024. The number of shares owned by shareholders was adjusted after the market closes on Monday, August 26th 2024. An investor that had 100 shares of stock prior to the reverse split would have 7 shares after the split. How do I buy shares of ESS Tech? Shares of GWH stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of ESS Tech own? Based on aggregate information from My MarketBeat watchlists, some other companies that ESS Tech investors own include Enovix (ENVX), Rambus (RMBS), Compass Pathways (CMPS), Ginkgo Bioworks (DNA), Toast (TOST), Luminar Technologies (LAZR) and Globant (GLOB). Company Calendar Last Earnings5/07/2026Today5/19/2026Sidoti Micro-Cap Virtual Conference5/20/2026Fiscal Year End12/31/2026Get Stock Alerts Health Indicator TradeSmith's Health IndicatorA long-term volatility-based measure designed for securities held 12 months or longer.Green: Strong and healthy uptrend with normal pullbacks.Yellow: Significant pullback but still within expected volatility.Red: Dropped beyond expected volatility; considered unhealthy. Red Zone (2m+) 1-Year History May 25 Aug 25 Nov 25 Feb 26 May 26 GWH's financial health is in the Red zone, according to TradeSmith. GWH has been in this zone for over 2 months. Industry, Sector and Symbol Stock ExchangeNYSE SectorComputer and Technology Industry ELEC PRODS - MISC Sub-IndustryElectrical Equipment Current SymbolNYSE:GWH CIK1819438 Webwww.acons2.com Phone855-423-9920FaxN/AEmployees270Year Founded2011Price Target and Rating Average Price Target for ESS Tech$2.00 High Price Target$2.00 Low Price Target$2.00 Potential Upside/Downside+128.1%Consensus RatingHold Rating Score (0-4)2.00 Research Coverage3 Analysts Profitability EPS (Trailing Twelve Months)($3.37) Trailing P/E RatioN/A Forward P/E RatioN/A P/E GrowthN/ANet Income-$63.44 million Net Margins-1,045.28% Pretax Margin-5,515.83% Return on Equity-1,251.69% Return on Assets-139.79% Debt Debt-to-Equity Ratio0.95 Current Ratio1.08 Quick Ratio1.07 Sales & Book Value Annual Sales$1.58 million Price / Sales16.31 Cash FlowN/A Price / Cash FlowN/A Book Value$0.39 per share Price / Book2.25Miscellaneous Outstanding Shares29,390,000Free Float28,978,000Market Cap$25.78 million OptionableNo Data Beta1.43 Social Links Reduce the RiskMarket downturns give many investors pause, and for good reason. 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