Compare Stocks Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities. 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:GENC NASDAQ:PPIH NASDAQ:RR NASDAQ:SOTK 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 VolumeGENCGencor Industries$14.37+2.5%$14.19$10.80▼$24.88$205.51M0.5228,251 shs20,612 shsPPIHPerma-Pipe International$22.55-6.3%$18.07$8.23▼$24.50$192.14M0.4636,086 shs33,269 shsRRRichtech Robotics$1.91+10.4%$2.11$0.30▼$5.20$198.09M-4.512.72 million shs9.82 million shsSOTKSono-Tek$3.56-3.5%$3.78$3.50▼$6.05$57.97M-0.0611,106 shs9,295 shs(Almost) Everything You Need To Know About The EV MarketLooking to profit from the electric vehicle mega-trend? Enter your email address and we'll send you our list of which EV stocks show the most long-term potential.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceGENCGencor Industries+2.50%-5.71%-1.10%+24.52%-31.05%PPIHPerma-Pipe International-6.31%-6.97%+2.08%+88.55%+141.18%RRRichtech Robotics+10.40%+0.53%-5.91%-0.52%+60.50%SOTKSono-Tek-1.79%-5.32%-4.30%-3.52%-14.80%Compare MarketRank™CompanyOverall ScoreAnalyst's OpinionShort Interest ScoreDividend StrengthESG ScoreNews and Social Media SentimentCompany OwnershipEarnings & ValuationGENCGencor Industries1.1425 of 5 stars0.05.00.00.00.01.71.3PPIHPerma-Pipe International1.0286 of 5 stars0.03.00.00.03.30.01.3RRRichtech Robotics2.2882 of 5 stars3.52.00.00.02.52.50.0SOTKSono-Tek3.074 of 5 stars3.05.00.00.02.80.81.3Compare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceGENCGencor Industries 0.00N/AN/AN/APPIHPerma-Pipe International 0.00N/AN/AN/ARRRichtech Robotics 3.00Buy$3.2570.16% UpsideSOTKSono-Tek 2.00Hold$7.50110.67% UpsideCurrent Analyst Ratings BreakdownLatest SOTK, RR, GENC, and PPIH Analyst RatingsDateCompanyBrokerageActionRatingPrice TargetDetails5/29/2025SOTKSono-TekNorthland CapmkSubscribe to MarketBeat All Access for the recommendation accuracy ratingDowngradeStrong-Buy ➝ Hold5/29/2025SOTKSono-TekNorthland SecuritiesSubscribe to MarketBeat All Access for the recommendation accuracy ratingReiterated RatingOutperform ➝ Market Perform(Data available from 7/17/2022 forward. View 10+ years of historical ratings with our analyst ratings screener.)Compare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookGENCGencor Industries$113.17M1.86$1.32 per share10.85$12.39 per share1.16PPIHPerma-Pipe International$158.38M1.14$1.53 per share14.73$9.04 per share2.49RRRichtech Robotics$4.24M51.58N/AN/A$0.45 per share4.24SOTKSono-Tek$20.50M2.73$0.12 per share29.41$1.16 per share3.07Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateGENCGencor Industries$14.67M$0.9913.06∞N/A14.33%8.60%8.01%N/APPIHPerma-Pipe International$8.98M$1.5414.64∞N/A7.31%17.84%7.81%9/15/2025 (Estimated)RRRichtech Robotics-$8.14M-$0.15N/A∞N/A-281.42%-31.58%-30.03%N/ASOTKSono-Tek$1.27M$0.0939.5644.50N/A6.93%8.10%6.07%N/ALatest SOTK, RR, GENC, and PPIH EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails7/10/2025Q1 2026SOTKSono-Tek$0.02$0.03+$0.01$0.03$5.24 million$5,121.00 billion6/13/2025Q1 2026PPIHPerma-Pipe InternationalN/A$0.61N/A$0.61N/A$46.75 million5/28/2025Q4 2025SOTKSono-Tek$0.01$0.08+$0.07$0.02$5.12 million$5.12 million5/14/2025Q1 2025RRRichtech Robotics-$0.02-$0.04-$0.02-$0.04$1.91 million$1.17 million5/1/2025Q4 2025PPIHPerma-Pipe InternationalN/A$0.27N/A$0.22N/A$44.99 millionCompare DividendsCompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive GrowthGENCGencor IndustriesN/AN/AN/AN/AN/APPIHPerma-Pipe InternationalN/AN/AN/AN/AN/ARRRichtech RoboticsN/AN/AN/AN/AN/ASOTKSono-TekN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioGENCGencor IndustriesN/A26.5517.52PPIHPerma-Pipe International0.051.951.72RRRichtech Robotics0.0175.7473.23SOTKSono-TekN/A3.772.83Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipGENCGencor IndustriesN/APPIHPerma-Pipe International28.43%RRRichtech Robotics0.01%SOTKSono-Tek47.89%Insider OwnershipCompanyInsider OwnershipGENCGencor Industries30.45%PPIHPerma-Pipe International6.00%RRRichtech Robotics41.30%SOTKSono-Tek5.88%Compare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableGENCGencor Industries37014.66 million10.20 millionOptionablePPIHPerma-Pipe International6107.98 million7.50 millionOptionableRRRichtech Robotics51114.50 million67.21 millionN/ASOTKSono-Tek8015.73 million14.80 millionNot OptionableSOTK, RR, GENC, and PPIH HeadlinesRecent News About These CompaniesIs Sono-Tek Corporation's (NASDAQ:SOTK) Recent Price Movement Underpinned By Its Weak Fundamentals?1 hour ago | finance.yahoo.comSono-Tek Corporation Reports Strong Q1 FY 2026 ResultsJuly 10, 2025 | tipranks.comSono-Tek Corporation (SOTK) Surpasses Q1 Earnings EstimatesJuly 10, 2025 | zacks.comSono-Tek (NASDAQ:SOTK) Announces Earnings ResultsJuly 10, 2025 | marketbeat.comSono-Tek Reports First Quarter FY 2026 Financial ResultsJuly 10, 2025 | prismmediawire.comPSono-Tek Reports First Quarter FY 2026 Financial ResultsJuly 10, 2025 | globenewswire.comSono-Tek (SOTK) to Release Earnings on ThursdayJuly 8, 2025 | americanbankingnews.comSono-Tek (SOTK) Expected to Announce Quarterly Earnings on ThursdayJuly 3, 2025 | marketbeat.comSono-Tek Corporation (SOTK) - Yahoo FinanceJuly 2, 2025 | finance.yahoo.comSono-Tek receives $1.2M order from long-standing customerJune 24, 2025 | finance.yahoo.comSono-Tek Corporation Secures $1.12 Million Order from Medical Diagnostics Customer, Demonstrating Advanced Automation CapabilitiesJune 23, 2025 | quiverquant.comQSono-Tek Receives $1.12 Million Order from Global Medical Diagnostics Company for High-Volume Coating PlatformJune 23, 2025 | prismmediawire.comPSono-Tek Receives $1.12 Million Order from Global Medical Diagnostics Company for High-Volume Coating PlatformJune 23, 2025 | globenewswire.comSono-Tek (NASDAQ:SOTK) Could Be Struggling To Allocate CapitalJune 15, 2025 | finance.yahoo.comSono-Tek downgraded at Northland on FY26 uncertaintyMay 30, 2025 | finance.yahoo.comNorthland Capital Markets Downgrades Sono-Tek (SOTK)May 30, 2025 | msn.comEarnings call transcript: Sono-Tek Corp’s Q2 2025 results meet expectationsMay 29, 2025 | uk.investing.comSono-Tek Corporation (SOTK) Q4 2025 Earnings Call TranscriptMay 28, 2025 | seekingalpha.comSono-Tek Corporation (SOTK) Beats Q4 Earnings and Revenue EstimatesMay 28, 2025 | zacks.comSono-Tek Reports Strong Fiscal Year 2025 Financial ResultsMay 28, 2025 | prismmediawire.comPSono-Tek Reports Strong Fiscal Year 2025 Financial ResultsMay 28, 2025 | globenewswire.comNew MarketBeat Followers Over TimeMedia Sentiment Over TimeTop HeadlinesView All Headlines3 Defense Leaders Set to Gain From Rising Military SpendBy Chris Markoch | July 5, 2025View 3 Defense Leaders Set to Gain From Rising Military SpendIPO Momentum Returns: 3 Stocks Rising After CoreWeave’s SurgeBy Dan Schmidt | June 20, 2025View IPO Momentum Returns: 3 Stocks Rising After CoreWeave’s SurgeBigBear.ai Poised to Benefit as Palantir Dominates AI DefenseBy Gabriel Osorio-Mazilli | June 23, 2025View BigBear.ai Poised to Benefit as Palantir Dominates AI DefenseThese 3 Dividend Stocks Combine Strong Yields With UpsideBy Chris Markoch | June 20, 2025View These 3 Dividend Stocks Combine Strong Yields With UpsideForget the Weak Dollar—These 3 Travel Stocks Are Still Taking OffBy Chris Markoch | July 6, 2025View Forget the Weak Dollar—These 3 Travel Stocks Are Still Taking OffSOTK, RR, GENC, and PPIH Company DescriptionsGencor Industries NASDAQ:GENC$14.37 +0.35 (+2.50%) Closing price 07/16/2025 04:00 PM EasternExtended Trading$14.30 -0.07 (-0.49%) As of 04:00 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 Polygon.io. Learn more.Gencor Industries, Inc., together with its subsidiaries, designs, manufactures, and sells heavy machinery used in the production of highway construction materials and environmental control equipment. It offers hot-mix asphalt plants to produce asphalt paving materials; related asphalt plant equipment, including hot-mix storage silos, fabric filtration systems, cold feed bins, and other plant components; and a range of mobile batch plants. The company also provides combustion systems that transform solid, liquid, or gaseous fuels into usable energy, or burn multiple fuels in asphalt and aggregate drying industries; and combustion systems for rotary dryers, kilns, fume and liquid incinerators, and fuel heaters, as well as industrial incinerators. In addition, it offers thermal fluid heat transfer systems that transfer heat for storage, heating, and pumping viscous materials, such as asphalt, chemicals, heavy oils, etc. in various industrial and petrochemical applications; specialty storage tanks for various industrial uses; and asphalt pavers under the Blaw-Knox brand. The company sells its products primarily to the highway construction industry through its sales representatives, and independent dealers and agents worldwide. The company was formerly known as Mechtron International Corporation and changed its name to Gencor Industries, Inc. in 1987. Gencor Industries, Inc. was founded in 1894 and is based in Orlando, Florida.Perma-Pipe International NASDAQ:PPIH$22.55 -1.52 (-6.31%) Closing price 07/16/2025 04:00 PM EasternExtended Trading$22.59 +0.04 (+0.18%) As of 07/16/2025 07:04 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.Perma-Pipe International Holdings, Inc., together with its subsidiaries, engineers, designs, manufactures, and sells specialty piping and leak detection systems. It offers insulated and jacketed district heating and cooling piping systems for energy distribution from central energy plants to various locations; and primary and secondary containment piping systems for transporting chemicals, hazardous fluids, and petroleum products, as well as engages in the coating and insulation of oil and gas gathering and transmission pipelines. The company also offers liquid and powder based anti-corrosion coatings for external and internal surfaces of steel pipe, including shapes like bends, reducers, tees, and other spools/fittings that is used in pipelines for the transportation of oil and gas products and potable water. It has operations in the United States, Canada, the Middle East, North Africa, Europe, India, and internationally. The company was formerly known as MFRI, Inc. and changed its name to Perma-Pipe International Holdings, Inc. in March 2017. Perma-Pipe International Holdings, Inc. was incorporated in 1993 and is headquartered in Spring, Texas.Richtech Robotics NASDAQ:RR$1.91 +0.18 (+10.40%) Closing price 07/16/2025 04:00 PM EasternExtended Trading$1.95 +0.04 (+2.09%) As of 07:15 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 Polygon.io. Learn more.Richtech Robotics Inc. develops, manufactures, deploys, and sells robotic solutions for automation in the service industry. The company offers indoor transport and delivery, sanitation, and food and beverage automation solutions, such as ADAM and ARM worker robots; delivery robots, including Matradee, Matradee X, Matradee L, Richie, and Robbie; and cleaning robots comprising DUST-E SX, and DUST-E MX, as well as accessories, such as bus tubs, cup holders, magnetic tray cases, smartwatches, table location systems, and tray covers. It primarily serves restaurants, hotels, casinos, senior living centers, factories, and retail centers, as well as hospitals, and movie theaters. The company was formerly known as Richtech Creative Displays LLC and changed its name to Richtech Robotics Inc. on June 22, 2022. Richtech Robotics Inc. was incorporated in 2016 and is headquartered in Las Vegas, Nevada.Sono-Tek NASDAQ:SOTK$3.56 -0.13 (-3.52%) Closing price 07/16/2025 04:00 PM EasternExtended Trading$3.58 +0.02 (+0.59%) As of 07/16/2025 07:59 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.Sono-Tek Corporation designs and manufactures ultrasonic coating systems for applying on parts and components for the microelectronics/electronics, alternative energy, medical, industrial, and research and development/other markets worldwide. The company also designs and manufactures custom-engineered ultrasonic coating systems; and provides nozzles and generators for manufacturers' equipment. Its products include integrated multi-axis coating systems, integrated coating systems, fluxing systems, OEM systems, and other related systems. In addition, the company provides surface coating solutions and application consulting services. It markets and distributes its products through direct sales personnel, select independent distributors, and sales representatives. The company was incorporated in 1975 and is based in Milton, New York. 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