Y-mAbs Therapeutics (YMAB) Stock Chart & Stock Price History $8.52 -0.01 (-0.12%) Closing price 04:00 PM EasternExtended Trading$8.52 +0.01 (+0.06%) As of 06:19 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 ForecastsChartCompetitorsEarningsFDA EventsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Y-mAbs Therapeutics Stock Price Performance The Y-mAbs Therapeutics (YMAB) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 37.99%, with a year-to-date return of 8.81%. In the past month, the stock has increased 78.62%, reflecting recent market activity. As of the latest close, Y-mAbs Therapeutics traded at $8.53 with a market cap of $387.59 million and volume of 573,836 shares. Five years ago, the stock traded at $43.62, representing a 80.47% decrease over that period. At the time, it had a market cap of $1.68 billion and a volume of 115,400 shares. Receive YMAB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Y-mAbs Therapeutics and its competitors with MarketBeat's FREE daily newsletter. Email Address 5 Day Performance0.00%1 Month Performance+78.62%3 Month Performance+97.22%Year-To-Date Performance+8.81%1 Year Performance-37.99%5 Year Performance-80.47% YMAB Stock Chart for Monday, August, 25, 2025 YMAB Chart by TradingView Y-mAbs Therapeutics 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 Capitalization08/25/2025$8.53$8.52-0.12%$8.54$8.52799,398 shs$387.13 million08/22/2025$8.53$8.53$8.54$8.53573,836 shs$387.59 million08/21/2025$8.52$8.53+0.12%$8.54$8.52551,972 shs$387.60 million08/20/2025$8.52$8.52$8.53$8.52890,084 shs$387.15 million08/19/2025$8.52$8.52$8.53$8.52943,986 shs$387.13 million08/18/2025$8.52$8.52$8.54$8.513.02 million shs$387.15 million08/15/2025$8.51$8.52+0.12%$8.53$8.511.10 million shs$387.15 million08/14/2025$8.51$8.51$8.53$8.511.31 million shs$386.69 million08/13/2025$8.51$8.51$8.52$8.51653,013 shs$386.68 million08/12/2025$8.52$8.51-0.12%$8.53$8.511.13 million shs$385.33 million Get the Latest News and Ratings for YMAB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Y-mAbs Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 08/11/2025$8.51$8.52+0.12%$8.53$8.51998,991 shs$385.79 million08/08/2025$8.52$8.51-0.12%$8.53$8.502.82 million shs$385.33 million08/07/2025$8.52$8.52$8.54$8.511.24 million shs$385.82 million08/06/2025$8.52$8.52$8.52$8.502.55 million shs$385.79 million08/05/2025$4.19$8.52+103.34%$8.54$8.5020.02 million shs$385.79 million08/04/2025$4.53$4.19-7.51%$4.54$4.16769,202 shs$189.74 million08/01/2025$4.47$4.53+1.34%$4.59$4.29138,793 shs$205.12 million07/31/2025$4.79$4.47-6.68%$4.83$4.43156,883 shs$202.40 million07/30/2025$4.97$4.79-3.62%$5.18$4.77250,793 shs$216.89 million07/29/2025$4.88$4.97+1.84%$5.00$4.64232,178 shs$225.04 million07/28/2025$4.77$4.88+2.31%$4.96$4.70157,349 shs$220.99 million07/25/2025$4.84$4.77-1.45%$4.90$4.68182,616 shs$216.01 million07/24/2025$4.81$4.84+0.62%$5.01$4.64296,580 shs$219.16 million Related Companies JANX Stock Chart EWTX Stock Chart ARDX Stock Chart HROW Stock Chart SPRY Stock Chart SDGR Stock Chart AMPH Stock Chart VERA Stock Chart ABCL Stock Chart ETNB Stock Chart Receive YMAB Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Y-mAbs Therapeutics and its competitors with MarketBeat's FREE daily newsletter. 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