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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 OTCMKTS:ATGNNASDAQ:JCSNASDAQ:SONMNASDAQ:SUNWOTCMKTS:ZMTP 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 VolumeATGNAltiGen Communications$0.59-1.2%$0.57$0.33▼$0.84$15.25M1.1744,253 shs78,846 shsJCSCommunications Systems$9.10$7.32▼$42.36$19.88M0.5314,178 shs1,508 shsSONMSonim Technologies$0.67+2.7%$1.17$0.60▼$6.40$6.92M1.891.10 million shs1.12 million shsSUNWSunworks$0.15$0.04▼$2.14$3.41M1.5625.47 million shs32.64 million shsZMTPZoom Telephonics$0.24$0.67▼$3.50$10.11M0.1326,928 shs6,865 shsA Guide To High-Short-Interest StocksMarketBeat's analysts have just released their top five short plays for July 2025. Learn which stocks have the most short interest and how to trade them. Enter your email address to see which companies made the list.Get This Free ReportCompare Price PerformanceCompany1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year PerformanceATGNAltiGen Communications0.00%-6.01%-3.23%+33.27%-11.84%JCSCommunications Systems0.00%0.00%0.00%0.00%0.00%SONMSonim Technologies0.00%-52.89%-33.10%-62.83%-87.85%SUNWSunworks0.00%0.00%0.00%0.00%0.00%ZMTPZoom Telephonics0.00%0.00%0.00%0.00%-87.43%Compare MarketRank™CompanyOverall ScoreAnalyst's OpinionShort Interest ScoreDividend StrengthESG ScoreNews and Social Media SentimentCompany OwnershipEarnings & ValuationATGNAltiGen CommunicationsN/AN/AN/AN/AN/AN/AN/AN/AJCSCommunications SystemsN/AN/AN/AN/AN/AN/AN/AN/ASONMSonim Technologies0.9748 of 5 stars0.03.00.00.01.62.50.6SUNWSunworksN/AN/AN/AN/AN/AN/AN/AN/AZMTPZoom TelephonicsN/AN/AN/AN/AN/AN/AN/AN/ACompare Analyst ForecastsCompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current PriceATGNAltiGen Communications 0.00N/AN/AN/AJCSCommunications Systems 0.00N/AN/AN/ASONMSonim Technologies 0.00N/AN/AN/ASUNWSunworks 0.00N/AN/AN/AZMTPZoom Telephonics 0.00N/AN/AN/ACompare Sales & Book ValueCompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/BookATGNAltiGen Communications$13.62M1.12$0.05 per share12.56$0.52 per share1.13JCSCommunications Systems$7.01M0.00N/AN/A$7.00 per share0.00SONMSonim Technologies$58.30M0.12N/AN/A($1.14) per share-0.59SUNWSunworks$154.86M0.00N/AN/A$1.82 per share0.00ZMTPZoom Telephonics$37.61M0.00N/AN/A$0.29 per share0.00Compare Profitability & EarningsCompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings DateATGNAltiGen Communications$1.56M$0.096.56∞N/A18.10%9.08%7.49%7/30/2025 (Estimated)JCSCommunications Systems$2.97M$1.844.45N/AN/A12.99%-26.12%-17.95%N/ASONMSonim Technologies-$33.65M-$2.930.000.80N/A-52.00%-465.12%-70.96%8/8/2025 (Estimated)SUNWSunworks-$28.21M-$1.56N/AN/AN/A-40.36%-127.97%-62.61%N/AZMTPZoom Telephonics-$3.28M-$0.18N/AN/AN/A-8.31%-32.80%-14.72%N/ALatest SUNW, ZMTP, ATGN, JCS, and SONM EarningsDateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails5/12/2025Q1 2025SONMSonim Technologies-$0.13$0.08+$0.21$0.08$19.56 million$15.00 million4/29/2025Q2 2025ATGNAltiGen CommunicationsN/A$0.01N/A$0.01N/A$3.50 millionCompare DividendsCompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive GrowthATGNAltiGen CommunicationsN/AN/AN/AN/AN/AJCSCommunications SystemsN/AN/AN/AN/AN/ASONMSonim TechnologiesN/AN/AN/AN/AN/ASUNWSunworksN/AN/AN/AN/AN/AZMTPZoom TelephonicsN/AN/AN/AN/AN/ACompare DebtCompanyDebt-to-Equity RatioCurrent RatioQuick RatioATGNAltiGen CommunicationsN/A1.921.92JCSCommunications SystemsN/A2.502.43SONMSonim TechnologiesN/A0.780.53SUNWSunworks0.141.240.83ZMTPZoom Telephonics0.041.611.20Compare OwnershipInstitutional OwnershipCompanyInstitutional OwnershipATGNAltiGen CommunicationsN/AJCSCommunications Systems53.08%SONMSonim Technologies3.26%SUNWSunworks8.88%ZMTPZoom TelephonicsN/AInsider OwnershipCompanyInsider OwnershipATGNAltiGen Communications14.00%JCSCommunications Systems17.10%SONMSonim Technologies49.75%SUNWSunworks1.20%ZMTPZoom Telephonics31.60%Compare Miscellaneous StatsCompanyEmployeesShares OutstandingFree FloatOptionableATGNAltiGen Communications6925.85 million22.23 millionNot OptionableJCSCommunications Systems1502.43 million2.01 millionNot OptionableSONMSonim Technologies10010.34 million5.20 millionNot OptionableSUNWSunworks62256.78 million56.10 millionOptionableZMTPZoom Telephonics5024.06 millionN/ANot OptionableSUNW, ZMTP, ATGN, JCS, and SONM HeadlinesRecent News About These CompaniesZoom enriches enterprise solutions offerSeptember 26, 2024 | computerweekly.comCZoom Adds New Advanced Enterprise OfferingsSeptember 25, 2024 | techrepublic.comTZoom Video Communications (ZM) Q2 2025 Earnings Call TranscriptAugust 21, 2024 | msn.comZoom Fatigue Is Real for CEOs. How to Make Remote Meetings Work for YouAugust 21, 2024 | inc.comZoom adds 'post-quantum' encryption for video natteringMay 21, 2024 | msn.comA millennial investor feels happier and healthier after taking most of her meetings off ZoomMay 16, 2024 | msn.comZoom: Unlock The Value In This Stock Ahead Of EarningsMay 6, 2024 | seekingalpha.comAvaya announces Zoom strategic partnership for collaborationMarch 27, 2024 | computerweekly.comCHow the AI-Powered Zoom Workplace Will Reimagine TeamworkMarch 27, 2024 | yahoo.comZoom Introduces AI-Powered Zoom Workplace for Improved CollaborationMarch 26, 2024 | msn.comZoom launches Zoom Workplace in AWS MarketplaceMarch 25, 2024 | markets.businessinsider.comZoom Shares Soar After Upbeat Q4 Sales and AI Integration SuccessFebruary 27, 2024 | industryleadersmagazine.comIZoom Gains After Sales Top Estimates on Enterprise CustomersFebruary 27, 2024 | msn.comZoom beats estimates on strong product demand, announces share buybackFebruary 26, 2024 | aol.comAZoom out: BOS nixes video commentsFebruary 6, 2024 | richmond.comRZoom 50th AnniversaryDecember 19, 2023 | wgbh.orgWZoom SecurityDecember 16, 2023 | csus.eduCZoom tackles hackers with new security measuresDecember 16, 2023 | bbc.comBZoom sees sales boom amid pandemicDecember 9, 2023 | bbc.comBMagewell Earns Zoom Certification for Popular USB Capture DevicesOctober 31, 2023 | streamingmedia.comSNew MarketBeat Followers Over TimeMedia Sentiment Over TimeSUNW, ZMTP, ATGN, JCS, and SONM Company DescriptionsAltiGen Communications OTCMKTS:ATGN$0.59 -0.01 (-1.19%) As of 07/3/2025 12:14 PM EasternAltigen Communications, Inc. designs, develops, markets, and supports integrated communications solutions worldwide. It provides MaxCS IP-PBX, a software-based phone system that provides customers with business communications solutions; MaxACD Voice Over Internet Protocol (VoIP) Contact Center, a software-based automatic call distribution engine, which offers call routing and call distribution options; MaxMobile that extends a set of business PBX functionality to smart phone devices; and MaxCommunicator, a Windows-based desktop application, which provides call control and visual voice mail management to the desktop. The company offers MaxAgent, a Windows-based desktop application to bring call control and workgroup information to call center agents; MaxSupervisor, a Windows-based desktop application for call center supervisors; and MaxACD for Skype, a call center solution. In addition, it provides hosted services, which include hosted IP PBX, Skype for Business, session initiation protocol trunk, call center solution, voice and video calling, conference calling, and various long-distance services; and software assurance services, which offer customers with software updates, patches, new releases, and technical support for the applications they are licensed to use. The company serves financial services, healthcare, retail, and business services industries through a channel of distributors and resellers. Altigen Communications, Inc. was incorporated in 1994 and is based in Milpitas, California.Communications Systems NASDAQ:JCSCommunications Systems, Inc. engages in the provision of network infrastructure and services for global deployments of enterprise and industrial networks through its subsidiaries. It operates through the following segments: Electronics and Software, Services and Support, and Other. Electronics and Software segment designs, develops, and sells Intelligent Edge solutions that provide connectivity and power through Power over Ethernet (PoE) products and actionable intelligence to end devices in an Internet of Things (IoT) ecosystem through embedded and cloud-based management software. The Services and Support segment provides technology solutions that address prevalent IT challenges, including network resiliency, security products and services, network virtualization, and cloud migrations, IT managed services, wired and wireless network design and implementation, and converged infrastructure configuration, deployment and management, and SD-WAN network devices. The Other segment includes non-allocated corporate overhead costs.The company was founded by Curtis A. Sampson in 1969 and is headquartered in Minnetonka, MN.Sonim Technologies NASDAQ:SONM$0.67 +0.02 (+2.65%) Closing price 07/3/2025 03:56 PM EasternExtended Trading$0.67 0.00 (-0.15%) As of 07/3/2025 04:59 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.Sonim Technologies, Inc. provides ruggedized mobile phones and accessories for task workers. The company offers ruggedized mobile phones, such as Sonim XP10, Sonim XP5plus, Sonim XP3plus, and Sonim XP Pro; Sonim mobile hotspot; industrial-grade accessories. It sells its mobile phones and accessories primarily to wireless carriers in the United States and Canada; and sells wireless carrier channels through distribution channels in North America and Europe. The company serves transportation and logistics, construction, manufacturing, facilities management, energy and utility, mining, and public safety sectors. The company was formerly known as NaviSpin.com, Inc. and changed its name to Sonim Technologies, Inc. in December 2001. Sonim Technologies, Inc. was incorporated in 1999 and is headquartered in San Diego, California.Sunworks NASDAQ:SUNWSunworks, Inc., through its subsidiaries, engages in the provision of photovoltaic and battery based power and storage systems for the commercial, agricultural, industrial, public works, and residential markets in the United States. It is also involved in the design, arrange financing, integrate, install, and manage systems ranging for residential homeowners, and commercial and public works projects. The company was formerly known as Solar3D, Inc. and changed its name to Sunworks, Inc. in March 2016. Sunworks, Inc. was incorporated in 2002 and is headquartered in Provo, Utah.Zoom Telephonics OTCMKTS:ZMTPZoom Telephonics, Inc., together with its subsidiary, designs, produces, markets, sells, and supports Internet access and other communications-related products in North America and internationally. It provides cable modems and gateways, multimedia over coax adapters, digital subscriber line modems, mobile broadband modems and routers, dial-up modems, local area network products, mobile broadband sensors, wireless and wired networking equipment, phone jacks and AC power adapters, and language-related specifics. The company sells its products through retailers and distributors, Internet and telephone service providers, value-added resellers, PC system integrators, and original equipment manufacturers, as well as through a direct sales force and independent sales agents. ZoomTelephonics, Inc. was founded in 1977 and is headquartered in Boston, Massachusetts. 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