Cytek Biosciences (CTKB) Stock Chart & Stock Price History $4.06 +0.05 (+1.25%) Closing price 10/15/2025 04:00 PM EasternExtended Trading$4.08 +0.02 (+0.37%) As of 07:03 AM 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 24.25%, with a year-to-date return of -37.44%. In the past month, the stock has increased 4.10%, reflecting recent market activity. As of the latest close, Cytek Biosciences traded at $4.06 with a market cap of $516.53 million and volume of 438,007 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. Subscribe Now View SMS TermsBy 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. 5 Day Performance+5.45%1 Month Performance+4.10%3 Month Performance+25.31%Year-To-Date Performance-37.44%1 Year Performance-24.25% CTKB Stock Chart for Thursday, October, 16, 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 Capitalization10/15/2025$4.01$4.06+1.25%$4.18$4.01438,007 shs$516.53 million10/14/2025$3.96$4.01+1.26%$4.06$3.85820,003 shs$510.15 million10/13/2025$3.85$3.96+2.86%$4.05$3.87592,484 shs$503.79 million10/10/2025$3.94$3.85-2.28%$4.02$3.75916,011 shs$489.80 million10/09/2025$3.90$3.94+1.03%$3.97$3.86503,023 shs$501.26 million10/08/2025$3.79$3.90+2.90%$3.95$3.81460,222 shs$496.16 million10/07/2025$4.02$3.79-5.72%$4.02$3.71985,507 shs$482.16 million10/06/2025$3.97$4.02+1.26%$4.04$3.901.21 million shs$511.44 million10/03/2025$3.65$3.97+8.77%$4.03$3.651.31 million shs$505.08 million10/02/2025$3.61$3.65+1.11%$3.71$3.58793,778 shs$464.35 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. 10/01/2025$3.47$3.61+4.03%$3.69$3.45724,419 shs$459.26 million09/30/2025$3.38$3.47+2.66%$3.48$3.35611,438 shs$441.45 million09/29/2025$3.40$3.38-0.59%$3.47$3.28824,334 shs$430.00 million09/26/2025$3.39$3.40+0.29%$3.47$3.37719,646 shs$432.55 million09/25/2025$3.41$3.39-0.59%$3.47$3.28893,909 shs$431.28 million09/24/2025$3.71$3.41-8.09%$3.72$3.40652,085 shs$433.82 million09/23/2025$3.86$3.71-3.89%$3.95$3.70584,395 shs$471.99 million09/22/2025$3.78$3.86+2.12%$3.95$3.71964,664 shs$491.07 million09/19/2025$4.09$3.78-7.58%$4.09$3.781.99 million shs$480.89 million09/18/2025$3.92$4.09+4.34%$4.12$3.97718,969 shs$520.33 million09/17/2025$3.90$3.92+0.51%$4.17$3.88926,573 shs$498.72 million09/16/2025$3.96$3.90-1.52%$3.97$3.86735,745 shs$496.16 million09/15/2025$3.94$3.96+0.51%$4.09$3.80975,576 shs$503.79 million Related Companies 10x Genomics Stock Price Chart Eyepoint Pharmaceuticals Stock Price Chart Aehr Test Systems Stock Price Chart Allient Stock Price Chart Transcat Stock Price Chart Standard BioTools Stock Price Chart Senseonics Stock Price Chart Quantum-Si Stock Price Chart Frequency Electronics Stock Price Chart 908 Devices 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. 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