Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems in North America, Asia, and internationally. The company offers optical and industrial sapphire products in various shapes and sizes, including sheets, rods, tubes, core, ingots, and prisms for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It serves defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is based in Bensenville, Illinois.

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• [06/02/2026 07:39 PDT] RBCN Expected to Trade Down After Bearish Patterns Develop
• [05/21/2026 10:29 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($4.31) From $4.31 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [05/13/2026 07:21 PDT] RBCN Expected to Trade Up After Bullish Patterns Develop
• [05/06/2026 07:44 PDT] RBCN Expected to Trade Down After Bearish Patterns Develop
• [05/05/2026 07:09 PDT] RBCN Expected to Trade Down After Bearish Patterns Develop
• [05/04/2026 06:53 PDT] RBCN Expected to Trade Down After Bearish Patterns Develop
• [04/24/2026 10:29 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($3.36) From $3.36 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [04/24/2026 10:29 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($3.52) From $3.52 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [04/24/2026 10:29 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($3.35) From $3.35 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [04/24/2026 10:29 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($3.33) From $3.33 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [04/22/2026 09:51 PDT] Rubicon Technology, Inc (NASDAQ:RBCN), Up By 100% ($3.16) From $3.16 After BUYINS.NET Report Predicted Stock Would Go Up Due To Bullish Conditions
• [04/22/2026 04:01 PDT] RBCN Expected to Trade Up After Bullish Patterns Develop
• [04/21/2026 09:27 PDT] RBCN Expected to Trade Up After Bullish Patterns Develop
• [04/15/2026 07:21 PDT] RBCN Expected to Trade Up After Bullish Patterns Develop