Rubicon Technology (RBCN) Stock Chart & Stock Price History $4.35 +0.20 (+4.82%) As of 10:31 AM Eastern Add Compare Share Share Chart Stock AnalysisChartCompetitorsDividendHeadlinesSEC FilingsShort InterestTrendsBuy This Stock Rubicon Technology Stock Price Performance The Rubicon Technology (RBCN) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 256.56%, with a year-to-date return of 163.64%. In the past month, the stock has increased 20.83%, reflecting recent market activity. As of the latest close, Rubicon Technology traded at $4.15 with a market cap of $9.88 million and volume of 23,109 shares. Five years ago, the stock traded at $8.33, representing a 47.78% decrease over that period. At the time, it had a market cap of $19.61 million and a volume of 13,149 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+4.82%1 Month Performance+20.83%3 Month Performance+126.44%Year-To-Date Performance+163.64%1 Year Performance+256.56%5 Year Performance-47.78% RBCN Stock Chart for Friday, September, 5, 2025 RBCN Chart by TradingView Rubicon Technology Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization09/04/2025$4.15$4.15$4.40$4.1023,109 shs$9.88 million09/03/2025$4.15$4.15$4.40$4.1023,109 shs$9.88 million09/02/2025$4.15$4.15$4.15$3.809,918 shs$9.88 million09/01/2025$4.15$4.15$4.15$3.809,918 shs$9.88 million08/29/2025$4.28$4.15-3.06%$4.15$3.809,918 shs$9.88 million08/28/2025$4.29$4.28-0.21%$4.28$4.25420 shs$10.19 million08/27/2025$4.33$4.29-0.92%$4.33$4.253,858 shs$10.21 million08/26/2025$4.34$4.33-0.23%$4.35$4.312,419 shs$10.31 million08/25/2025$4.34$4.34$4.37$4.319,732 shs$10.33 million08/22/2025$4.37$4.34-0.69%$4.36$4.3125,620 shs$10.33 million Get the Latest News and Ratings for RBCN and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Rubicon Technology and its competitors with MarketBeat's FREE daily newsletter. 08/21/2025$3.26$4.37+34.05%$4.54$3.75116,921 shs$10.40 million08/20/2025$3.26$3.26$3.26$3.26537 shs$7.76 million08/19/2025$3.45$3.26-5.51%$3.26$3.26537 shs$7.76 million08/18/2025$3.53$3.45-2.27%$3.45$3.451,507 shs$8.21 million08/15/2025$3.10$3.53+13.87%$3.53$3.251,847 shs$8.40 million08/14/2025$3.25$3.10-4.62%$3.10$3.101,025 shs$7.38 million08/13/2025$3.10$3.25+4.84%$3.25$3.10221 shs$7.74 million08/12/2025$3.20$3.10-3.13%$3.20$3.101,987 shs$7.38 million08/11/2025$3.10$3.20+3.23%$3.20$3.16200 shs$7.62 million08/08/2025$3.40$3.10-8.82%$3.53$3.1011,763 shs$7.38 million08/07/2025$3.50$3.40-2.86%$3.53$3.40510 shs$8.09 million08/06/2025$3.60$3.50-2.78%$3.50$3.32719 shs$8.33 million08/05/2025$3.30$3.60+9.09%$5.51$3.4089,787 shs$8.57 million08/04/2025$3.25$3.30+1.54%$3.40$3.30758 shs$7.85 million Related Companies LRCX Stock Price Chart AMAT Stock Price Chart KLAC Stock Price Chart ENTG Stock Price Chart MKSI Stock Price Chart AMKR Stock Price Chart AEIS Stock Price Chart ONTO Stock Price Chart ACLS Stock Price Chart FORM Stock Price Chart Receive RBCN Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Rubicon Technology and its competitors with MarketBeat's FREE daily newsletter. 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