Rubicon Technology (RBCN) Stock Chart & Stock Price History $4.28 -0.01 (-0.23%) As of 09/25/2025 02:05 PM Eastern Add Compare Share Share Chart Stock AnalysisChartCompetitorsDividendSEC 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 210.14%, with a year-to-date return of 159.39%. In the past month, the stock has decreased 1.15%, reflecting recent market activity. As of the latest close, Rubicon Technology traded at $4.28 with a market cap of $10.19 million and volume of 392 shares. Five years ago, the stock traded at $8.52, representing a 49.77% decrease over that period. At the time, it had a market cap of $20.50 million and a volume of 427 shares. 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Read our full terms of service and privacy policy. 5 Day Performance+1.76%1 Month Performance-1.15%3 Month Performance+86.09%Year-To-Date Performance+159.39%1 Year Performance+210.14%5 Year Performance-49.77% RBCN Stock Chart for Friday, September, 26, 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 Capitalization09/25/2025$4.29$4.28-0.23%$4.32$4.21392 shs$10.19 million09/24/2025$4.21$4.29+1.80%$4.29$4.251,581 shs$10.21 million09/23/2025$4.18$4.21+0.81%$4.21$4.211,331 shs$10.03 million09/22/2025$4.21$4.18-0.62%$4.32$4.161,062 shs$9.95 million09/19/2025$4.25$4.21-0.99%$4.25$4.2010,051 shs$10.01 million09/18/2025$4.28$4.25-0.75%$4.25$4.173,121 shs$10.11 million09/17/2025$4.31$4.28-0.70%$4.28$4.28462 shs$10.19 million09/16/2025$4.26$4.31+1.17%$4.31$4.31131 shs$10.26 million09/15/2025$4.24$4.26+0.50%$4.37$4.2110,836 shs$10.14 million09/12/2025$4.23$4.24+0.26%$4.24$4.131,276 shs$10.09 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. 09/11/2025$4.25$4.23-0.52%$4.26$4.23666 shs$10.06 million09/10/2025$4.26$4.25-0.23%$4.28$4.256,797 shs$10.12 million09/09/2025$4.26$4.26$4.30$4.001,753 shs$10.14 million09/08/2025$4.35$4.26-2.07%$4.30$4.001,753 shs$10.14 million09/05/2025$4.15$4.35+4.82%$4.35$4.08327 shs$10.35 million09/04/2025$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 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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