Tandem Diabetes Care (TNDM) Stock Chart & Stock Price History $19.98 +3.13 (+18.58%) Closing price 04:00 PM EasternExtended Trading$20.29 +0.31 (+1.55%) As of 06:28 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 InterestSustainabilityTrendsBuy This Stock Tandem Diabetes Care Stock Price Performance 5 Day Performance+10.52%1 Month Performance+6.57%3 Month Performance-46.14%6 Month Performance-37.45%Year-To-Date Performance-44.59%1 Year Performance-44.86% Receive TNDM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Tandem Diabetes Care and its competitors with MarketBeat's FREE daily newsletter. Email Address TNDM Stock Chart for Thursday, May, 1, 2025 TNDM Chart by TradingView Tandem Diabetes Care Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization04/30/2025$16.77$16.85+0.48%$17.03$16.341.71 million shs$1.12 billion04/29/2025$17.47$16.77-4.01%$17.70$16.731.92 million shs$1.12 billion04/28/2025$18.06$17.47-3.27%$18.22$17.251.14 million shs$1.16 billion04/25/2025$17.67$18.06+2.21%$18.09$17.151.16 million shs$1.20 billion04/24/2025$16.61$17.67+6.36%$17.72$16.411.36 million shs$1.18 billion04/23/2025$16.35$16.61+1.61%$17.61$16.501.82 million shs$1.11 billion04/22/2025$16.39$16.35-0.24%$16.81$16.021.37 million shs$1.09 billion04/21/2025$16.86$16.39-2.79%$16.76$15.951.08 million shs$1.09 billion04/18/2025$16.86$16.86$17.11$16.531.13 million shs$1.12 billion04/17/2025$17.26$16.86-2.32%$17.11$16.531.13 million shs$1.12 billion Get the Latest News and Ratings for TNDM and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Tandem Diabetes Care and its competitors with MarketBeat's FREE daily newsletter. 04/16/2025$17.71$17.26-2.54%$17.72$16.861.31 million shs$1.15 billion04/15/2025$17.03$17.71+3.99%$17.73$16.721.24 million shs$1.18 billion04/14/2025$17.06$17.03-0.18%$17.51$16.302.06 million shs$1.13 billion04/11/2025$17.04$17.06+0.12%$17.25$16.561.23 million shs$1.13 billion04/10/2025$17.61$17.04-3.24%$17.63$16.272.17 million shs$1.13 billion04/09/2025$16.37$17.61+7.57%$18.22$16.043.04 million shs$1.17 billion04/09/2025$16.37$17.61+7.57%$18.22$16.043.04 million shs$1.17 billion04/08/2025$16.85$16.37-2.85%$17.48$16.272.27 million shs$1.09 billion04/08/2025$16.85$16.37-2.85%$17.48$16.272.27 million shs$1.09 billion04/07/2025$16.88$16.85-0.18%$17.65$15.752.70 million shs$1.12 billion04/04/2025$17.66$16.88-4.42%$17.15$16.082.03 million shs$1.12 billion04/03/2025$18.89$17.66-6.51%$18.55$17.28828,001 shs$1.17 billion04/02/2025$18.73$18.89+0.85%$19.13$18.49957,378 shs$1.26 billion04/01/2025$19.16$18.73-2.24%$19.39$18.55966,046 shs$1.25 billion03/31/2025$19.28$19.16-0.62%$19.46$18.751.08 million shs$1.27 billion Related Companies INSP Stock Price Chart BLCO Stock Price Chart SLNO Stock Price Chart IRTC Stock Price Chart TMDX Stock Price Chart PRCT Stock Price Chart NVST Stock Price Chart LMAT Stock Price Chart LIVN Stock Price Chart ENOV Stock Price Chart Receive TNDM Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Tandem Diabetes Care and its competitors with MarketBeat's FREE daily newsletter. 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