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Stocks to Compare Sections All Sections Selected Performance Chart Price & Volume MarketRank Analyst Ratings Sales & Book Value Profitability & Earnings Dividends Debt Ownership Miscellaneous Headlines About Compare NASDAQ:BLGO NASDAQ:LOOP OTCMKTS:WNDW NASDAQ:ZTEK On This Page Performance ChartPrice & VolumeMarketRank™Analyst RatingsSales & Book ValueProfitability & EarningsDividendsDebtOwnershipMiscellaneousHeadlinesAbout Comparison Ideas Stock Ideas Comparative Price Performance Over Time1 day7 days30 days90 days365 daysCompare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeBLGOBioLargo$0.11-3.2%$0.13$0.10▼$0.23$34.16M-0.14353,724 shs183,241 shsLOOPLoop Industries$0.79+9.4%$1.25$0.71▼$2.11$37.98M1.4472,598 shs63,343 shsWNDWSolarwindow Technologies$0.30+3.4%$0.32$0.15▼$0.90$15.96M-8.2217,829 shs1,478 shsZTEKZentek$0.41+9.7%$0.56$0.37▼$1.35$51.53M0.46214,140 shs184,072 shsThe 10 Best High-Yield Dividend Stocks for 2026Discover the 10 Best High-Yield Dividend Stocks for 2026 and secure reliable income in uncertain markets. Download the report now to identify top dividend payers and avoid common yield traps.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceBLGOBioLargo+0.27%-5.34%-26.31%-33.25%-47.71%LOOPLoop Industries-2.96%-15.27%-47.43%-44.60%-53.54%WNDWSolarwindow Technologies+3.41%+11.11%+5.26%-18.90%-2.22%ZTEKZentek-6.75%-13.32%-42.34%-34.55%-71.09%Compare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeBLGOBioLargo$0.11-3.2%$0.13$0.10▼$0.23$34.16M-0.14353,724 shs183,241 shsLOOPLoop Industries$0.79+9.4%$1.25$0.71▼$2.11$37.98M1.4472,598 shs63,343 shsWNDWSolarwindow Technologies$0.30+3.4%$0.32$0.15▼$0.90$15.96M-8.2217,829 shs1,478 shsZTEKZentek$0.41+9.7%$0.56$0.37▼$1.35$51.53M0.46214,140 shs184,072 shsThe 10 Best High-Yield Dividend Stocks for 2026Discover the 10 Best High-Yield Dividend Stocks for 2026 and secure reliable income in uncertain markets. Download the report now to identify top dividend payers and avoid common yield traps.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceBLGOBioLargo+0.27%-5.34%-26.31%-33.25%-47.71%LOOPLoop Industries-2.96%-15.27%-47.43%-44.60%-53.54%WNDWSolarwindow Technologies+3.41%+11.11%+5.26%-18.90%-2.22%ZTEKZentek-6.75%-13.32%-42.34%-34.55%-71.09%Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceBLGOBioLargo 0.00N/AN/AN/ALOOPLoop Industries 0.00N/AN/AN/AWNDWSolarwindow Technologies 0.00N/AN/AN/AZTEKZentek 1.00SellN/AN/ACurrent Analyst Ratings BreakdownLatest WNDW, ZTEK, LOOP, and BLGO Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails4/20/2026ZTEKZentek Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)(Data available from 6/24/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookBLGOBioLargo$12.23M2.79N/AN/A$0.01 per share10.63LOOPLoop Industries$514K74.17N/AN/A($0.20) per share-3.94WNDWSolarwindow TechnologiesN/AN/AN/AN/A$0.12 per shareN/AZTEKZentek$942.88K54.93N/AN/A$0.10 per share4.09Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateBLGOBioLargo-$3.50M-$0.04N/AN/AN/A-11.45%-39.90%-22.06%N/ALOOPLoop Industries-$12.30M-$0.26N/A7.88N/AN/AN/A-100.27%7/21/2026 (Estimated)WNDWSolarwindow Technologies-$2.26M-$0.03N/AN/AN/AN/A-42.41%-40.25%N/AZTEKZentek-$7.22M-$0.05N/AN/AN/A-875.49%-60.84%-45.12%7/1/2026 (Estimated)Latest WNDW, ZTEK, LOOP, and BLGO EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails7/21/2026Q1 2027LOOPLoop Industries-$0.05N/AN/AN/A$0.54 millionN/A7/1/2026N/AZTEKZentek-$0.0309N/AN/AN/A$0.31 millionN/A5/27/2026Q4 2026LOOPLoop Industries-$0.06-$0.0560+$0.0040-$0.0560$0.78 million$0.18 million4/9/2026Q2 2026WNDWSolarwindow TechnologiesN/A-$0.01N/A-$0.01N/AN/ACompare DividendsCompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive GrowthBLGOBioLargoN/AN/AN/AN/AN/ALOOPLoop IndustriesN/AN/AN/AN/AN/AWNDWSolarwindow TechnologiesN/AN/AN/AN/AN/AZTEKZentekN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioBLGOBioLargo0.032.312.24LOOPLoop IndustriesN/A1.311.31WNDWSolarwindow TechnologiesN/A19.8019.80ZTEKZentek0.141.000.74Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipBLGOBioLargo0.04%LOOPLoop Industries4.89%WNDWSolarwindow TechnologiesN/AZTEKZentek0.77%Insider OwnershipCompanyInsider OwnershipBLGOBioLargo19.30%LOOPLoop Industries49.70%WNDWSolarwindow Technologies67.28%ZTEKZentekN/ACompare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableBLGOBioLargo30321.40 million240.17 millionNot OptionableLOOPLoop Industries9048.38 million24.34 millionOptionableWNDWSolarwindow Technologies753.20 million17.41 millionNot OptionableZTEKZentek24126.62 millionN/ANot OptionableWNDW, ZTEK, LOOP, and BLGO HeadlinesRecent News About These CompaniesZentek (ZTEK) to Announce Quarterly Earnings on WednesdayJune 24 at 1:10 AM | americanbankingnews.comZentek Ltd. Common Stock (ZTEK) Short InterestJune 23 at 12:17 AM | nasdaq.comZentek Granted U.S. Patent for ZenGUARD(TM) Graphene-Based TechnologyJune 9, 2026 | newsfilecorp.comNZentek Announces Closing of Fully Subscribed Brokered LIFE Offering for Gross Proceeds of C$18 MillionMay 27, 2026 | newsfilecorp.comNZentek Announces That Its Brokered LIFE Offering Is Oversubscribed and Fully AllocatedMay 19, 2026 | newsfilecorp.comNZentek Ltd. Common Stock (ZTEK)May 18, 2026 | nasdaq.comZentek Announces Brokered LIFE Offering for Gross Proceeds of up to C$15 MillionMay 14, 2026 | newsfilecorp.comNZentek's ZenGUARD(TM) Enhanced Air Filters Now Available for Direct Procurement by All Federal Departments and AgenciesMay 13, 2026 | newsfilecorp.comNZentek Accepting Canadian Commercial Orders for ZenGUARD(TM) Enhanced Air Filters Following Health Canada Regulatory ClassificationMay 6, 2026 | newsfilecorp.comNAlbany Graphite Launches Year Two Environmental and Social Baseline Program with ERM and Constance Lake First NationApril 28, 2026 | newsfilecorp.comNAlbany Graphite Executes Agreement with AETC for Certified Samples and Process Engineering, Completing the Set of Three Independent Workstreams Feeding the PEAApril 21, 2026 | newsfilecorp.comNAlbany Graphite Corp. Engages AppEco for Independent Market Research and Economic AnalysisApril 16, 2026 | newsfilecorp.comNTriera Biosciences Completes Innovative Solutions Canada Contract, Advances Platform Toward New Candidate DevelopmentApril 14, 2026 | newsfilecorp.comNAlbany Graphite Corp. Engages Micon International to Complete New PEA for Albany Graphite ProjectApril 9, 2026 | newsfilecorp.comNZentek Engages ICP Securities Inc. for Automated Market Making ServicesApril 1, 2026 | newsfilecorp.comNTriera Biosciences - a Zentek Company - Launches Contract Research Organization Services for Custom Aptamer Discovery, Biosensor Enablement, and Machine-Learning ClassificationMarch 25, 2026 | accessnewswire.comAZentek Ltd. Receives Favorable Judgment in Long-Standing LitigationMarch 13, 2026 | accessnewswire.comAZentek Ltd.: Zentek Provides PDAC 2026 Update - Government and First Nations EngagementMarch 9, 2026 | finanznachrichten.deZentek Provides PDAC 2026 Update - Government and First Nations EngagementMarch 9, 2026 | accessnewswire.comAZentek Ltd.: Zentek Announces Pilot Evaluation Program with Quality Filters Inc.March 4, 2026 | finanznachrichten.deNew MarketBeat Followers Over TimeMedia Sentiment Over Time Top HeadlinesView All Headlines5 Stocks Winning the AI Race While Everyone Watches NVIDIABy Bridget Bennett | May 26, 20265 Under-the-Radar AI Stocks to Watch in JuneBy Thomas Hughes | May 31, 2026Will the SpaceX IPO Put These 5 Public Space Stocks Into a Higher Orbit?By Ryan Hasson | June 2, 2026Quantum Stocks Just Got a Lifeline—Who Benefits Most?By Nathan Reiff | May 26, 2026Semtech’s Explosive Rally May Only Be Getting StartedBy Thomas Hughes | May 28, 2026WNDW, ZTEK, LOOP, and BLGO Company DescriptionsBioLargo NASDAQ:BLGO$0.11 0.00 (-3.19%) As of 02:13 PM EasternBioLargo, Inc. invents, develops, and commercializes various platform technologies. Its technologies solve challenging environmental problems comprising per - and polyfluoroalkyl substances (PFAS) water contamination, advanced water and wastewater treatment, industrial odor and volatile organic compounds control, air quality control, infection control, and myriad environmental remediation. The company provides full-service environmental engineering services. BioLargo, Inc. was incorporated in 1991 and is based in Westminster, California.Loop Industries NASDAQ:LOOP$0.79 +0.07 (+9.41%) As of 03:56 PM Eastern This is a fair market value price provided by Massive. Learn more.Loop Industries, Inc., a technology company, focuses on depolymerizing waste polyethylene terephthalate PET plastics and polyester fibers, including plastic bottles, packaging, carpets and textiles of any color, transparency and even ocean plastics that have been degraded by the sun and salt, to its base building blocks. Its polymerized monomers into virgin-quality PET resins for use in food-grade plastic packaging, such as plastic bottles for water and carbonated soft drinks, and containers for food and other consumer products; and polyester fibers, including textiles, clothing, and apparel. The company was incorporated in 2010 and is based in Terrebonne, Canada.Solarwindow Technologies OTCMKTS:WNDW$0.30 +0.01 (+3.41%) As of 10:55 AM EasternSolarWindow Technologies, Inc. engages in the development of transparent electricity-generating coatings and methods under LiquidElectricity Coatings brand. The company's coatings generate electricity by harvesting light energy from natural sun, artificial light, and low, shaded, or reflected light conditions, which is applied to rigid and flexible glass, and plastic surfaces to transform ordinary surfaces into organic photovoltaic devices. The company was incorporated in 1998 and is based in Scottsdale, Arizona.Zentek NASDAQ:ZTEK$0.41 +0.04 (+9.65%) As of 03:57 PM Eastern This is a fair market value price provided by Massive. Learn more.Zentek Ltd., together with its subsidiaries, engages in the research and development of graphene and related nanomaterials in Canada. The company develops graphene-based antimicrobial coating under the ZenGUARD brand, surgical masks, HVAC filters, personal protective equipment, rapid detection point of care diagnostics tests, and pharmaceutical products based on graphene-based compounds. It is also developing graphene oxide synthesis and graphene synthesis. In addition, the company owns 100% interest in the Albany graphite project located in Northern Ontario, Canada. The company was formerly known as ZEN Graphene Solutions Ltd. and changed its name to Zentek Ltd. in October 2021. Zentek Ltd. was incorporated in 2008 and is headquartered in Guelph, Canada. 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