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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 NASDAQ:ARQ NYSE:OEC 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$2.57+2.0%$2.53$1.22▼$4.73$162.53M1.681.53 million shs1.65 million shsARQARQ$6.99+1.9%$7.15$3.34▼$8.11$298.41M1.92215,224 shs143,001 shsOECOrion$5.75-0.2%$8.44$5.23▼$19.48$324.55M1.02763,394 shs640,684 shsZTEKZentek$0.86+6.9%$0.81$0.62▼$1.84$90.29M0.9130,999 shs127,167 shs5G Stocks: The Path Forward is ProfitableEnter your email address and we'll send you MarketBeat's guide to investing in 5G and which 5G stocks show the most promise. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceAMTXAemetis+1.98%-5.17%+6.20%-19.44%-11.99%ARQARQ+1.90%+4.33%-2.78%+20.52%+21.14%OECOrion+0.19%-0.24%-27.95%-49.40%-63.47%ZTEKZentek+6.93%+14.39%-1.05%-2.72%+8.29%Compare Price & VolumeCompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's VolumeAMTXAemetis$2.57+2.0%$2.53$1.22▼$4.73$162.53M1.681.53 million shs1.65 million shsARQARQ$6.99+1.9%$7.15$3.34▼$8.11$298.41M1.92215,224 shs143,001 shsOECOrion$5.75-0.2%$8.44$5.23▼$19.48$324.55M1.02763,394 shs640,684 shsZTEKZentek$0.86+6.9%$0.81$0.62▼$1.84$90.29M0.9130,999 shs127,167 shs5G Stocks: The Path Forward is ProfitableEnter your email address and we'll send you MarketBeat's guide to investing in 5G and which 5G stocks show the most promise. Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceAMTXAemetis+1.98%-5.17%+6.20%-19.44%-11.99%ARQARQ+1.90%+4.33%-2.78%+20.52%+21.14%OECOrion+0.19%-0.24%-27.95%-49.40%-63.47%ZTEKZentek+6.93%+14.39%-1.05%-2.72%+8.29%Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceAMTXAemetis 2.50Moderate Buy$17.33574.45% UpsideARQARQ 2.80Moderate Buy$10.0043.06% UpsideOECOrion 1.40Strong Sell$7.3327.63% UpsideZTEKZentek 1.00SellN/AN/ACurrent Analyst Ratings BreakdownLatest ZTEK, OEC, ARQ, and AMTX Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails10/25/2025OECOrionWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D)10/24/2025AMTXAemetisWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)10/24/2025ARQARQWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D-)10/24/2025ZTEKZentekWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)10/20/2025OECOrionMizuhoSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingSet Price Target$6.0010/17/2025OECOrionUBS GroupSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingDowngradeBuy ➝ Neutral$12.00 ➝ $7.0010/10/2025OECOrionZacks ResearchSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingUpgradeStrong Sell ➝ Hold10/8/2025AMTXAemetisWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)10/8/2025ARQARQWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D-)10/8/2025OECOrionWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (D)10/8/2025ZTEKZentekWeiss RatingsSubscribe to MarketBeat All Access for the firm's recommendation accuracy ratingReiterated RatingSell (E+)(Data available from 10/25/2022 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookAMTXAemetis$267.64M0.61N/AN/A($5.16) per share-0.50ARQARQ$108.96M2.74$0.10 per share71.91$5.17 per share1.35OECOrion$1.88B0.17$3.96 per share1.45$8.23 per share0.70ZTEKZentek$1.22M74.01N/AN/A$0.10 per share8.61Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateAMTXAemetis-$87.54M-$1.62N/AN/AN/A-36.70%N/A-33.18%11/11/2025 (Estimated)ARQARQ-$5.11M-$0.04N/A29.13N/A-1.40%-0.07%-0.05%11/5/2025 (Estimated)OECOrion$44.20M$0.2721.282.76N/A0.82%16.67%4.00%11/4/2025 (Estimated)ZTEKZentek-$7.22M-$0.05N/A∞N/A-981.17%-55.41%-45.62%11/12/2025 (Estimated)Latest ZTEK, OEC, ARQ, and AMTX EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails11/11/2025Q3 2025AMTXAemetis-$0.25N/AN/AN/A$87.79 millionN/A11/5/2025N/AARQARQ$0.02N/AN/AN/A$35.63 millionN/A11/4/2025Q3 2025OECOrion$0.36N/AN/AN/A$453.45 millionN/A8/14/2025Q1 2026ZTEKZentekN/A-$0.01N/A-$0.01N/A$0.04 million8/11/2025Q2 2025ARQARQ-$0.01-$0.01N/A-$0.05$25.56 million$28.58 million8/7/2025Q2 2025AMTXAemetis-$0.35-$0.41-$0.06-$0.41$78.68 million$52.24 million8/6/2025Q2 2025OECOrion$0.36$0.32-$0.04$0.16$475.77 million$466.40 millionCompare DividendsCompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive GrowthAMTXAemetisN/AN/AN/AN/AN/AARQARQN/AN/AN/AN/AN/AOECOrion$0.081.39%N/A29.63%N/AZTEKZentekN/AN/AN/AN/AN/ALatest ZTEK, OEC, ARQ, and AMTX DividendsAnnouncementCompanyPeriodAmountYieldEx-Dividend DateRecord DatePayable Date9/11/2025OECOrioninterim$0.02070.8%12/12/202512/12/20251/20/2026(Data available from 1/1/2013 forward)Compare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioAMTXAemetisN/A0.060.02ARQARQ0.041.100.65OECOrion1.461.100.64ZTEKZentek0.121.621.30Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipAMTXAemetis27.02%ARQARQ18.49%OECOrion94.33%ZTEKZentek0.77%Insider OwnershipCompanyInsider OwnershipAMTXAemetis14.70%ARQARQ23.89%OECOrion2.70%ZTEKZentekN/ACompare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableAMTXAemetis16063.24 million53.95 millionOptionableARQARQ14042.69 million32.49 millionN/AOECOrion1,65856.15 million54.63 millionOptionableZTEKZentek24104.88 millionN/ANot OptionableZTEK, OEC, ARQ, and AMTX HeadlinesRecent News About These CompaniesZentek (NASDAQ:ZTEK) Given Sell (E+) Rating at Weiss RatingsOctober 25 at 1:56 PM | marketbeat.comZentek Announces Closing of Non-Brokered Private Placement of Units for Gross Proceeds of $2,479,227October 22 at 5:34 PM | newsfilecorp.comNZentek Announces Upsizing of Non-Brokered Private Placement to up to $2,500,000October 20, 2025 | newsfilecorp.comNZentek Announces $2 Million Private Placement to Support GrowthOctober 17, 2025 | theglobeandmail.comZentek (NASDAQ:ZTEK) Given "Sell (E+)" Rating at Weiss RatingsOctober 8, 2025 | marketbeat.comZentek’s Albany Graphite provides nuclear suitability testing resultsOctober 6, 2025 | msn.comZentek Subsidiary Albany Graphite Corp. Provides Additional Positive Nuclear Suitability Testing ResultsOctober 6, 2025 | accessnewswire.comAZentek Ltd. (NASDAQ:ZTEK) Sees Significant Growth in Short InterestOctober 5, 2025 | marketbeat.comZentek Announces Non-Brokered Private Placement of Units for up to $2,000,000October 1, 2025 | newsfilecorp.comNZentek Announces Voting Results of Annual and Special MeetingSeptember 25, 2025 | newsfilecorp.comNZentek Provides Corporate UpdateSeptember 24, 2025 | accessnewswire.comAZentek Ltd.: Zentek Subsidiary Albany Graphite Corp. Achieves Additional 5N Purification Result and Nuclear Graphite EBC RequirementsSeptember 24, 2025 | finanznachrichten.deZentek Subsidiary Albany Graphite Corp. Achieves Additional 5N Purification Result and Nuclear Graphite EBC RequirementsSeptember 22, 2025 | accessnewswire.comAZentek provides preliminary update on influenza countermeasure candidateSeptember 18, 2025 | msn.comZentek Provides a Preliminary Update on Influenza Countermeasure Candidate Developed Using the Multivalent Aptamer Technology against H1N1 (Seasonal Influenza)September 18, 2025 | accessnewswire.comAZentek Announces New Board NomineesSeptember 10, 2025 | accessnewswire.comAZentek CEO Greg Fenton resigns to accept new positionSeptember 4, 2025 | msn.comZentek Announces Resignation of CEO - Greg Fenton to take New Strategic Leadership Role in U.S.-Based VentureSeptember 3, 2025 | accessnewswire.comAZentek Announces Changes to Board of Directors and Changes to Board Nominations for Upcoming Annual and Special Meeting of ShareholdersSeptember 3, 2025 | accessnewswire.comAZentek Subsidiary Albany Graphite Corp. Awarded $500,000 Critical Minerals Innovation Fund Grant for Purification and Anode Development ProjectSeptember 2, 2025 | accessnewswire.comAZentek Ltd. Receives Nasdaq Notification Regarding Minimum Bid Price DeficiencyAugust 27, 2025 | newsfilecorp.comNNew MarketBeat Followers Over TimeMedia Sentiment Over Time Top HeadlinesView All HeadlinesSoundHound Breaks Critical Resistance: How High Can It Get Now?By Thomas Hughes | September 28, 2025October’s Top 5 Stocks Poised for Big BreakoutsBy Thomas Hughes | October 1, 2025Datavault AI: The New AI Contender Backed by Big FundingBy Jeffrey Neal Johnson | October 1, 2025Costco Investors Will Get a “Special” Treat for ChristmasBy Thomas Hughes | September 29, 2025Big Gains Alert: These 3 Tech Stocks Are Surging This MonthBy Chris Markoch | October 10, 2025ZTEK, OEC, ARQ, and AMTX Company DescriptionsAemetis NASDAQ:AMTX$2.57 +0.05 (+1.98%) Closing price 10/24/2025 04:00 PM EasternExtended Trading$2.58 +0.01 (+0.19%) As of 10/24/2025 07:47 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 Polygon.io. 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.ARQ NASDAQ:ARQ$6.99 +0.13 (+1.90%) Closing price 10/24/2025 04:00 PM EasternExtended Trading$6.86 -0.13 (-1.86%) As of 10/24/2025 05:21 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 Polygon.io. Learn more.Arq, Inc. is a holding company. It engages in the provision of environmental and emission control equipment to the power generation industry. The company operates through the following Segments: Refined Coal and Advanced Purification Technologies. The Refined Coal segment includes the Tinuum Group, Tinuum Services, and GWN Manager. The Advanced Purification Technologies segment refers to the sale of Activated Carbon Injection and Dry Sorbent Injection equipment systems, chemical sales, consulting services, and other sales related to the reduction of emissions in the coal-fired electric generation process and the electric utility industry. The company was founded in 1996 and is headquartered in Greenwood Village, CO.Orion NYSE:OEC$5.75 -0.01 (-0.24%) Closing price 10/24/2025 03:59 PM EasternExtended Trading$5.79 +0.04 (+0.77%) As of 10/24/2025 07:57 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 Polygon.io. Learn more.Orion S.A., together with its subsidiaries, engages in the manufacture and sale of carbon black products. It operates in two segments, Specialty Carbon Black and Rubber Carbon Black. The company offers post-treated specialty carbon black grades for coatings and printing applications; high purity carbon black grades for the fiber industry; and conductive carbon black grades for batteries, polymers, and coatings. It also provides rubber carbon black products for applications in mechanical rubber goods, as well as in tires under the ECORAX brand name; and acetylene-based conductive additives for lithium-ion batteries and other applications. It operates in the United States, Brazil, rest of the Americas, Germany, South Africa, Italy, Spain, Turkey, France, Rest of EMEA, China, the Republic of Korea, and rest of Asia. The company was formerly known as Orion Engineered Carbons S.A. and changed its name to Orion S.A. in June 2023. Orion S.A. was founded in 1862 and is headquartered in Senningerberg, Luxembourg.Zentek NASDAQ:ZTEK$0.86 +0.06 (+6.93%) Closing price 10/24/2025 04:00 PM EasternExtended Trading$0.86 +0.00 (+0.01%) As of 10/24/2025 07:14 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 Polygon.io. 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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