Cytek Biosciences (CTKB) Stock Chart & Stock Price History $4.03 +0.24 (+6.33%) Closing price 04:00 PM EasternExtended Trading$3.97 -0.06 (-1.49%) As of 05:45 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. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Cytek Biosciences Stock Price Performance The Cytek Biosciences (CTKB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 22.94%, with a year-to-date return of -37.90%. In the past month, the stock has increased 16.81%, reflecting recent market activity. As of the latest close, Cytek Biosciences traded at $3.79 with a market cap of $482.18 million and volume of 1.67 million shares. Receive CTKB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Cytek Biosciences and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance-1.95%1 Month Performance+16.81%3 Month Performance+33.44%Year-To-Date Performance-37.90%1 Year Performance-22.94% CTKB Stock Chart for Tuesday, August, 12, 2025 CTKB Chart by TradingView Cytek Biosciences 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 Capitalization08/12/2025$3.79$4.03+6.33%$4.09$3.831.31 million shs$512.70 million08/11/2025$4.03$3.79-5.96%$4.02$3.681.67 million shs$482.18 million08/08/2025$4.11$4.03-1.95%$4.10$3.901.54 million shs$510.44 million08/07/2025$3.89$4.11+5.66%$4.19$3.801.45 million shs$520.57 million08/06/2025$3.88$3.89+0.26%$3.98$3.811.57 million shs$492.71 million08/05/2025$3.84$3.88+1.04%$3.94$3.801.11 million shs$491.44 million08/04/2025$3.64$3.84+5.49%$3.86$3.621.28 million shs$461.04 million08/01/2025$3.60$3.64+1.11%$3.67$3.441.54 million shs$461.04 million07/31/2025$3.55$3.60+1.41%$3.61$3.461.53 million shs$455.98 million07/30/2025$3.60$3.55-1.39%$3.69$3.461.38 million shs$449.64 million Get the Latest News and Ratings for CTKB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Cytek Biosciences and its competitors with MarketBeat's FREE daily newsletter. 07/29/2025$3.75$3.60-4.00%$3.78$3.60797,414 shs$455.97 million07/28/2025$3.69$3.75+1.63%$3.78$3.661.14 million shs$474.98 million07/25/2025$3.33$3.69+10.81%$3.71$3.381.60 million shs$467.38 million07/24/2025$3.37$3.33-1.19%$3.39$3.20705,753 shs$421.78 million07/23/2025$3.25$3.37+3.69%$3.44$3.26780,585 shs$426.84 million07/22/2025$3.10$3.25+4.84%$3.26$3.09612,773 shs$411.65 million07/21/2025$3.13$3.10-0.96%$3.21$3.09429,296 shs$392.65 million07/18/2025$3.30$3.13-5.15%$3.34$3.10714,730 shs$396.45 million07/17/2025$3.24$3.30+1.85%$3.38$3.25775,307 shs$417.98 million07/16/2025$3.25$3.24-0.31%$3.34$3.22788,508 shs$410.38 million07/15/2025$3.35$3.25-2.99%$3.40$3.211.15 million shs$411.64 million07/14/2025$3.45$3.35-2.90%$3.44$3.26969,435 shs$424.31 million07/11/2025$3.56$3.45-3.09%$3.55$3.43441,456 shs$436.97 million Related Companies 10x Genomics Stock Price Chart Transcat Stock Price Chart Eyepoint Pharmaceuticals Stock Price Chart Allient Stock Price Chart Aehr Test Systems Stock Price Chart Standard BioTools Stock Price Chart Senseonics Stock Price Chart Quanterix Stock Price Chart Quantum-Si Stock Price Chart Frequency Electronics Stock Price Chart Receive CTKB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Cytek Biosciences and its competitors with MarketBeat's FREE daily newsletter. This page (NASDAQ:CTKB) was last updated on 8/12/2025 by MarketBeat.com Staff From Our PartnersWhat's the Best Way to Lower RMD Taxes?Turning 73 triggers a key IRS rule: you must begin taking required minimum distributions (RMDs) from certain r...SmartAsset | SponsoredAltucher: It Looks Like My Trump prediction is coming trueNew Hampshire just launched a Strategic Crypto Reserve — and James Altucher says it’s the first sign that “Tru...Paradigm Press | SponsoredTrump’s betrayal exposedTrump’s Final Reset Inside the shocking plot to re-engineer America’s financial system…and why you need to ...Porter & Company | SponsoredThis New Rule Could Change EverythingA new rule taking effect this September has Big Banks shifting billions into one asset they now treat like cas...American Alternative | SponsoredElon Musk: “Nothing happens without this…”Lithium has fueled the EV boom, but another resource is even more critical. 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