NASDAQ:RBCN Rubicon Technology (RBCN) Stock Price, News & Analysis $4.60 -0.20 (-4.17%) As of 11:56 AM Eastern Add Compare Share Share Stock Analysis Stock AnalysisChartCompetitors About Rubicon Technology Stock (NASDAQ:RBCN) View Price History Chart DataSkip Price History Chart 1 Day 5 Days 30 Days 90 Days 1 Year Advanced 1 Day 1 Day 5 Days 30 Days 90 Days 1 Year Advanced Show volume Show extended hours Get Rubicon Technology alerts:Sign Up Key Stats Today's Range$4.60▼$4.9350-Day Range$4.80▼$6.7052-Week Range$2.55▼$6.70Volume1,870 shsAverage Volume4,072 shsMarket Capitalization$43.14 millionP/E Ratio24.21Dividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview Rubicon Technology, Inc. is an advanced materials company that specializes in the production and processing of monocrystalline sapphire. Sapphire is valued for its hardness, optical clarity, chemical resistance and ability to withstand high temperatures, making it useful in demanding industrial and technology applications. The company has historically offered sapphire products such as windows, substrates, rods, tubes and other custom-shaped components. These products have been used in applications serving the semiconductor, light-emitting diode, optical, aerospace, defense and industrial markets. Rubicon has also provided sapphire-based optical components and related fabrication services tailored to customer specifications. Founded in 2001 and based in Bensenville, Illinois, Rubicon Technology developed capabilities spanning sapphire crystal growth, fabrication and finishing. Its products have served customers in the United States and international markets. The company’s business and operating focus has evolved over time as it has reviewed its product offerings and the markets for advanced sapphire materials.AI Generated. May Contain Errors. Read More Receive RBCN Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Rubicon Technology and its competitors with MarketBeat's FREE daily newsletter. Submit View SMS TermsSMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy. RBCN Stock News HeadlinesRubicon Technology (NASDAQ:RBCN) Share Price Crosses Above 200-Day Moving Average - What's Next?October 23, 2026 | americanbankingnews.comJanel Corp Increases Stake in Rubicon TechnologyOctober 14, 2025 | tipranks.comElon Musk’s One Stock Retirement PlanJeff Brown picked Nvidia in 2016, before it surged 37,000 percent. Now he's tracking a small AI company he says is the same size Nvidia was a decade ago. The company holds 150 patents protecting its core technology, and Brown believes Elon Musk could soon drive major demand for it. A key catalyst is set for November 11.October 28 at 1:00 AM | Brownstone Research (Ad)Rubicon Technology, Inc. completes acquisition of Janel Group LLCOctober 14, 2025 | prnewswire.comJanel’s Charter Amendment Approved by ShareholdersAugust 22, 2025 | tipranks.comRubicon Technology (RBCN) to Acquire Janel Group in $33.25 Million DealAugust 21, 2025 | gurufocus.comRubicon Technology to acquire Janel Group for $4.75 per shareAugust 21, 2025 | msn.comRubicon Technology, Inc. to acquire Janel Group LLC | RBCN Stock NewsAugust 20, 2025 | gurufocus.comSee More Headlines RBCN Stock Analysis - Frequently Asked Questions How have RBCN shares performed this year? Rubicon Technology's stock was trading at $2.75 on January 1st, 2026. Since then, RBCN shares have increased by 85.8% and is now trading at $5.11. When did Rubicon Technology's stock split? Rubicon Technology's stock reverse split on Friday, May 5th 2017.The 1-10 reverse split was announced on Thursday, May 4th 2017. The number of shares owned by shareholders was adjusted after the market closes on Thursday, May 4th 2017. An investor that had 100 shares of stock prior to the reverse split would have 10 shares after the split. Does Rubicon Technology have any subsidiaries? Rubicon Technology subsidiaries include Rubicon DTP LLC, Rubicon Technology BP LLC, and Rubicon Technology Worldwide LLC. How do I buy shares of Rubicon Technology? Shares of RBCN stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Rubicon Technology own? Based on aggregate information from My MarketBeat watchlists, some other companies that Rubicon Technology investors own include Ford Motor (F), Advanced Micro Devices (AMD), Cirrus Logic (CRUS), FuelCell Energy (FCEL), Gogo (GOGO), Groupon (GRPN) and Intel (INTC). Company Calendar Today10/28/2026Fiscal Year End12/31/2026Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorTechnology Industry Semiconductors & Semiconductor Equipment Sub-IndustrySemiconductor Materials & Equipment Current SymbolNASDAQ:RBCN CIK1410172 Webwww.rubicontechnology.com Phone(847) 295-7000Fax847-295-7555Employees10Year Founded2001Profitability EPS (Trailing Twelve Months)$1.44 Trailing P/E Ratio24.21 Forward P/E RatioN/A P/E GrowthN/ANet Income-$10 thousand Net Margins-29.90% Pretax Margin-29.84% Return on Equity-122.29% Return on Assets-47.56% Debt Debt-to-Equity RatioN/A Current Ratio1.51 Quick Ratio1.38 Sales & Book Value Annual Sales$3.88 million Price / Sales11.11 Cash Flow$0.05 per share Price / Cash Flow89.59 Book Value$0.17 per share Price / Book27.06Miscellaneous Outstanding Shares9,378,000Free Float2,292,000Market Cap$43.14 million OptionableNot Optionable Beta1.50 Social Links 10 Best Stocks to Own in Fall 2026AI spending is reshaping the market, and the opportunity extends far beyond the biggest chipmakers. 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