Tandem Diabetes Care (TNDM) Stock Chart & Stock Price History $17.06 -0.02 (-0.09%) Closing price 07/3/2025 03:58 PM EasternExtended Trading$16.72 -0.34 (-2.02%) As of 07/3/2025 04:20 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 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 57.78%, with a year-to-date return of -52.63%. In the past month, the stock has decreased 17.88%, reflecting recent market activity. As of the latest close, Tandem Diabetes Care traded at $17.06 with a market cap of $1.14 billion and volume of 1.10 million shares. Five years ago, the stock traded at $101.70, representing a 83.22% decrease over that period. At the time, it had a market cap of $6.11 billion and a volume of 1.96 million 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-0.09%1 Month Performance-17.88%3 Month Performance+1.27%Year-To-Date Performance-52.63%1 Year Performance-57.78%5 Year Performance-83.22% TNDM Stock Chart for Monday, July, 7, 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 Capitalization07/04/2025$17.06$17.06$17.29$16.601.10 million shs$1.14 billion07/03/2025$17.08$17.06-0.09%$17.29$16.601.10 million shs$1.14 billion07/02/2025$17.24$17.08-0.93%$17.73$16.992.62 million shs$1.14 billion07/01/2025$18.64$17.24-7.51%$18.13$16.054.39 million shs$1.15 billion06/30/2025$18.94$18.64-1.58%$19.23$18.571.25 million shs$1.24 billion06/27/2025$19.11$18.94-0.89%$19.31$18.541.66 million shs$1.26 billion06/26/2025$19.42$19.11-1.60%$19.52$18.941.06 million shs$1.27 billion06/25/2025$20.18$19.42-3.77%$20.42$18.842.07 million shs$1.29 billion06/24/2025$20.22$20.18-0.20%$21.18$19.821.45 million shs$1.34 billion06/23/2025$20.22$20.22$20.68$19.781.33 million shs$1.35 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. 06/20/2025$20.41$20.22-0.93%$20.96$20.061.12 million shs$1.35 billion06/19/2025$20.41$20.41$20.58$19.72845,489 shs$1.36 billion06/18/2025$20.07$20.41+1.69%$20.58$19.72845,489 shs$1.36 billion06/17/2025$20.04$20.07+0.15%$20.78$19.621.18 million shs$1.34 billion06/16/2025$20.76$20.04-3.47%$20.94$19.861.12 million shs$1.33 billion06/13/2025$20.92$20.76-0.76%$21.23$20.321.12 million shs$1.38 billion06/12/2025$21.55$20.92-2.92%$21.42$20.471.09 million shs$1.39 billion06/11/2025$22.44$21.55-3.97%$22.56$21.331.58 million shs$1.44 billion06/10/2025$20.23$22.44+10.92%$22.59$20.382.30 million shs$1.49 billion06/09/2025$20.78$20.23-2.65%$20.98$20.191.11 million shs$1.35 billion06/06/2025$20.66$20.78+0.58%$21.27$20.611.01 million shs$1.38 billion Related Companies IRTC Stock Price Chart NARI Stock Price Chart BLCO Stock Price Chart TMDX Stock Price Chart SLNO Stock Price Chart INSP Stock Price Chart NVST Stock Price Chart PRCT Stock Price Chart LIVN Stock Price Chart WRBY 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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