Tandem Diabetes Care (TNDM) Stock Chart & Stock Price History $10.82 +0.16 (+1.50%) Closing price 08/15/2025 04:00 PM EasternExtended Trading$10.93 +0.11 (+1.02%) As of 08/15/2025 07:58 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 EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Tandem Diabetes Care Stock Price Performance The Tandem Diabetes Care (TNDM) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has decreased 75.79%, with a year-to-date return of -69.96%. In the past month, the stock has decreased 31.30%, reflecting recent market activity. As of the latest close, Tandem Diabetes Care traded at $10.82 with a market cap of $731.11 million and volume of 2.13 million shares. Five years ago, the stock traded at $96.56, representing a 88.79% decrease over that period. At the time, it had a market cap of $5.85 billion and a volume of 579,862 shares. 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 5 Day Performance+7.02%1 Month Performance-31.30%3 Month Performance-53.12%Year-To-Date Performance-69.96%1 Year Performance-75.79%5 Year Performance-88.79% TNDM Stock Chart for Saturday, August, 16, 2025 TNDM Chart by TradingView Tandem Diabetes Care 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 Capitalization08/15/2025$10.66$10.82+1.50%$11.17$10.702.13 million shs$731.11 million08/14/2025$11.13$10.66-4.22%$11.26$10.642.06 million shs$720.29 million08/13/2025$11.10$11.13+0.27%$11.82$11.012.97 million shs$752.05 million08/12/2025$10.11$11.10+9.79%$11.23$10.653.66 million shs$750.03 million08/11/2025$11.23$10.11-9.97%$11.13$10.003.13 million shs$683.12 million08/08/2025$11.52$11.23-2.52%$12.47$10.774.46 million shs$748.00 million08/07/2025$14.39$11.52-19.94%$11.56$9.9811.84 million shs$767.35 million08/06/2025$15.15$14.39-5.02%$15.14$13.943.32 million shs$958.52 million08/05/2025$15.42$15.15-1.75%$15.54$14.921.52 million shs$1.01 billion08/04/2025$15.40$15.42+0.13%$15.63$14.671.97 million shs$1.03 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. 08/01/2025$15.58$15.40-1.16%$15.66$15.051.39 million shs$1.03 billion07/31/2025$16.67$15.58-6.54%$16.30$15.521.81 million shs$1.04 billion07/30/2025$16.69$16.67-0.12%$17.02$16.341.43 million shs$1.11 billion07/29/2025$16.84$16.69-0.89%$17.19$16.321.85 million shs$1.11 billion07/28/2025$15.89$16.84+5.98%$16.91$15.902.24 million shs$1.12 billion07/25/2025$15.44$15.89+2.91%$15.90$15.211.32 million shs$1.06 billion07/24/2025$16.15$15.44-4.40%$16.35$15.431.46 million shs$1.03 billion07/23/2025$15.31$16.15+5.49%$16.17$15.331.73 million shs$1.08 billion07/22/2025$14.63$15.31+4.65%$15.60$14.761.52 million shs$1.02 billion07/21/2025$14.77$14.63-0.95%$14.98$14.311.41 million shs$974.50 million07/18/2025$15.36$14.77-3.84%$15.68$14.661.68 million shs$983.83 million07/17/2025$15.75$15.36-2.48%$16.31$15.251.76 million shs$1.02 billion07/16/2025$15.20$15.75+3.62%$15.93$15.191.83 million shs$1.05 billion07/15/2025$15.75$15.20-3.49%$15.98$14.872.14 million shs$1.01 billion Related Companies INSP Stock Price Chart NVST Stock Price Chart PRCT Stock Price Chart WRBY Stock Price Chart LIVN Stock Price Chart EYE Stock Price Chart LMAT Stock Price Chart LQDA Stock Price Chart CNMD 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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