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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:AMTX NYSE:FSI NASDAQ:LNZA 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 VolumeAMTXAemetis$2.29$2.60$1.30▼$3.80$161.15M1.461.89 million shs1.15 million shsFSIFlexible Solutions International$6.35$5.83$3.86▼$11.48$80.88M1.6628,502 shs3,877 shsLNZALanzaTech Global$9.73$20.97$7.88▼$71.19$98.18MN/A46,008 shs376,052 shsZTEKZentek$0.69$0.59$0.40▼$1.65$74.95M0.33200,663 shs728,281 shsBeginner's Guide To Retirement StocksClick the link to see MarketBeat's list of seven best retirement stocks and why they should be in your portfolio. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceAMTXAemetis0.00%-11.58%+0.88%+50.66%+34.71%FSIFlexible Solutions International0.00%+2.78%+0.95%+12.79%+44.32%LNZALanzaTech Global0.00%-60.38%-56.89%+4.85%-63.20%ZTEKZentek0.00%-8.60%+40.53%+7.48%-56.60%Compare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeAMTXAemetis$2.29$2.60$1.30▼$3.80$161.15M1.461.89 million shs1.15 million shsFSIFlexible Solutions International$6.35$5.83$3.86▼$11.48$80.88M1.6628,502 shs3,877 shsLNZALanzaTech Global$9.73$20.97$7.88▼$71.19$98.18MN/A46,008 shs376,052 shsZTEKZentek$0.69$0.59$0.40▼$1.65$74.95M0.33200,663 shs728,281 shsBeginner's Guide To Retirement StocksClick the link to see MarketBeat's list of seven best retirement stocks and why they should be in your portfolio. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceAMTXAemetis0.00%-11.58%+0.88%+50.66%+34.71%FSIFlexible Solutions International0.00%+2.78%+0.95%+12.79%+44.32%LNZALanzaTech Global0.00%-60.38%-56.89%+4.85%-63.20%ZTEKZentek0.00%-8.60%+40.53%+7.48%-56.60%Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceAMTXAemetis 2.33Hold$8.58274.82% UpsideFSIFlexible Solutions International 2.50Moderate BuyN/AN/ALNZALanzaTech Global 1.67Reduce$14.0043.88% UpsideZTEKZentek 1.00SellN/AN/ACurrent Analyst Ratings BreakdownLatest FSI, LNZA, AMTX, and ZTEK Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails4/24/2026FSIFlexible Solutions International Zacks ResearchSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingDowngradeHold ➝ Strong Sell4/21/2026LNZALanzaTech Global Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)4/20/2026AMTXAemetis Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)4/20/2026ZTEKZentek Weiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)4/8/2026AMTXAemetis Ascendiant Capital MarketsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingBoost Price TargetBuy$20.00 ➝ $21.004/1/2026LNZALanzaTech Global Zacks ResearchSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingUpgradeHold3/12/2026AMTXAemetis Loop CapitalSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingSet Price Target$1.75(Data available from 5/18/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookAMTXAemetis$197.63M0.82N/AN/A($4.63) per share-0.49FSIFlexible Solutions International$38.52M2.10$0.35 per share18.10$3.08 per share2.06LNZALanzaTech Global$55.85M1.76N/AN/A($1.68) per share-5.79ZTEKZentek$630K118.96N/AN/A$0.10 per share6.90Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateAMTXAemetis-$77M-$1.19N/AN/AN/A-35.43%N/A-33.44%8/6/2026 (Estimated)FSIFlexible Solutions International$2.78M$0.0619.2417.64N/A10.80%10.61%7.32%N/ALNZALanzaTech Global-$48.95M-$0.97N/AN/AN/A-76.05%-1,268.15%-42.19%5/18/2026 (Estimated)ZTEKZentek-$7.22M-$0.05N/AN/AN/A-875.49%-60.84%-45.12%7/1/2026 (Estimated)Latest FSI, LNZA, AMTX, and ZTEK EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails5/14/2026Q1 2026LNZALanzaTech Global-$2.88-$1.77+$1.11-$1.77$12.10 million$12.02 million5/7/2026Q1 2026AMTXAemetis-$0.27-$0.33-$0.06-$0.33$66.70 million$54.62 million4/15/2026Full YearFSIFlexible Solutions InternationalN/A$0.06N/AN/AN/AN/A3/31/2026Q4 2025LNZALanzaTech Global-$6.47-$0.04+$6.43$0.39$12.20 million$28.00 million3/12/2026Q4 2025AMTXAemetis-$0.28-$0.24+$0.04-$0.08$72.07 million$43.31 millionCompare DividendsCompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive GrowthAMTXAemetisN/AN/AN/AN/AN/AFSIFlexible Solutions International$0.152.36%N/A250.00%N/ALNZALanzaTech GlobalN/AN/AN/AN/AN/AZTEKZentekN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioAMTXAemetisN/A0.090.06FSIFlexible Solutions International0.173.172.22LNZALanzaTech Global0.331.961.96ZTEKZentek0.141.000.74Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipAMTXAemetis27.02%FSIFlexible Solutions International54.31%LNZALanzaTech Global17.76%ZTEKZentek0.77%Insider OwnershipCompanyInsider OwnershipAMTXAemetis13.00%FSIFlexible Solutions International35.80%LNZALanzaTech Global1.30%ZTEKZentekN/ACompare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableAMTXAemetis16070.37 million61.22 millionOptionableFSIFlexible Solutions International4012.74 million8.03 millionNot OptionableLNZALanzaTech Global310.09 million9.96 millionNo DataZTEKZentek24108.62 millionN/ANot OptionableFSI, LNZA, AMTX, and ZTEK HeadlinesRecent News About These CompaniesZentek 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.deZentek Announces Pilot Evaluation Program with Quality Filters Inc.March 4, 2026 | accessnewswire.comAZentek Outlines Government Engagement Strategy and Announces Plans to Advance Albany Graphite Toward New Preliminary Economic AssessmentFebruary 26, 2026 | accessnewswire.comAZentek Ltd. Granted 180-Day Extension to Regain Compliance with Nasdaq's Minimum Bid Price RequirementFebruary 25, 2026 | accessnewswire.comAZentek Ltd.: Zentek Provides Strategic and Regulatory UpdateFebruary 17, 2026 | finanznachrichten.deZentek Provides Strategic and Regulatory UpdateFebruary 17, 2026 | accessnewswire.comAZentek Issues Shareholder Letter Outlining Strategic Reset and Focused Growth PlanJanuary 29, 2026 | newsfilecorp.comNNew MarketBeat Followers Over TimeMedia Sentiment Over TimeFSI, LNZA, AMTX, and ZTEK Company DescriptionsAemetis NASDAQ:AMTX$2.29 0.00 (0.00%) Closing price 05/15/2026 04:00 PM EasternExtended Trading$2.30 +0.01 (+0.44%) As of 06:45 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.Aemetis, Inc. operates as a renewable natural gas and renewable fuels company. It operates through three segments: California Ethanol, California Dairy Renewable Natural Gas, and India Biodiesel. The company focuses on the operation, acquisition, development, and commercialization of technologies to produce low and negative carbon intensity renewable fuels that replace fossil-based products. In addition, it produces and sells ethanol; and wet distillers grains, distillers corn oil, and condensed distillers solubles to dairies and feedlots as animal feed. Further, the company markets and supplies USP alcohol and hand sanitizer; and produces renewable natural gas, as well as distilled biodiesel from various vegetable oil and animal waste feedstocks. Additionally, it researches and develops conversion technologies using waste feedstocks to produce biofuels and biochemicals. Furthermore, it sells biodiesel primarily to government oil marketing companies. Aemetis, Inc. is headquartered in Cupertino, California.Flexible Solutions International NYSE:FSI$6.35 0.00 (0.00%) Closing price 05/15/2026 04:00 PM EasternExtended Trading$6.20 -0.15 (-2.44%) As of 05/15/2026 07:45 PM 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.Flexible Solutions International, Inc., together with its subsidiaries, develops, manufactures, and markets specialty chemicals that slow the evaporation of water in Canada, the United States, and internationally. The company operates in two segments, Energy and Water Conservation Products, and Biodegradable Polymers. The company offers thermal polyaspartates (TPAs) for oilfields to reduce scale and corrosion in various water systems; and for the agricultural industry to reduce fertilizer crystallization before, during, and after application, as well as to prevent crystal formation between fertilizer and minerals present in the soil. It also provides TPAs for irrigation to prevent early plugging of drip irrigation ports, reduce maintenance costs, and lengthen the life of equipment; TPAs for cleaning products to prevents the re-deposition of dirt onto the surfaces; and TPAs as additives for household laundry detergents, consumer care products, and pesticides. In addition, the company offers nitrogen conservation products for agriculture that slow down nitrogen loss from fields. Further, it provides HEATSAVR, a chemical product for use in swimming pools and spas that forms a thin and transparent layer on the water's surface; and WATERSAVR to reduce water evaporation in reservoirs, potable water storage tanks, livestock watering ponds, aqueducts, canals, and irrigation ditches, as well as for lawn and turf care, and potted and bedding plants. The company was incorporated in 1991 and is headquartered in Taber, Canada.LanzaTech Global NASDAQ:LNZA$9.73 0.00 (0.00%) Closing price 05/15/2026 04:00 PM EasternExtended Trading$9.89 +0.16 (+1.64%) As of 06:37 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.LanzaTech Global, Inc. operates as a nature-based carbon refining company in the United States and internationally. The company transforms waste carbon into the chemical building blocks for consumer goods, such as sustainable fuels, fabrics, and packaging. It is also developing biocatalysts and processes to produce a suite of additional products utilizing novel biocatalysts, including acetone and isopropanol (IPA) and industrial solvents used in various applications, including production of polymers from IPA. LanzaTech Global, Inc. was founded in 2005 and is headquartered in Skokie, Illinois.Zentek NASDAQ:ZTEK$0.69 0.00 (0.00%) Closing price 05/15/2026 04:00 PM EasternExtended Trading$0.73 +0.04 (+5.94%) As of 06:41 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.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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