Tandem Diabetes Care, Inc. (TNDM)
NASDAQ: TNDM · Real-Time Price · USD
13.86
+0.33 (2.44%)
At close: May 19, 2026, 4:00 PM EDT
13.95
+0.09 (0.65%)
After-hours: May 19, 2026, 6:51 PM EDT
Tandem Diabetes Care Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 19, 2026 | 13.53 | 14.03 | 13.47 | 13.86 | 13.86 | 2.44% | 1,994,664 |
| May 18, 2026 | 13.15 | 13.67 | 12.83 | 13.53 | 13.53 | 5.54% | 4,717,400 |
| May 15, 2026 | 13.65 | 13.68 | 12.26 | 12.82 | 12.82 | -9.40% | 6,098,285 |
| May 14, 2026 | 14.17 | 14.69 | 13.96 | 14.15 | 14.15 | 0.28% | 2,770,876 |
| May 13, 2026 | 14.41 | 14.83 | 13.95 | 14.11 | 14.11 | -3.95% | 2,640,166 |
| May 12, 2026 | 14.74 | 15.34 | 14.42 | 14.69 | 14.69 | -0.54% | 2,367,731 |
| May 11, 2026 | 15.16 | 15.35 | 14.18 | 14.77 | 14.77 | -4.59% | 3,647,417 |
| May 8, 2026 | 20.00 | 20.03 | 15.44 | 15.48 | 15.48 | -16.19% | 7,532,578 |
| May 7, 2026 | 18.30 | 18.90 | 17.75 | 18.47 | 18.47 | 2.44% | 2,628,867 |
| May 6, 2026 | 19.48 | 19.49 | 17.93 | 18.03 | 18.03 | -7.16% | 3,131,835 |
| May 5, 2026 | 19.90 | 19.98 | 18.91 | 19.42 | 19.42 | -2.26% | 1,624,628 |
| May 4, 2026 | 19.62 | 20.44 | 19.15 | 19.87 | 19.87 | 2.32% | 2,072,341 |
| May 1, 2026 | 19.63 | 20.03 | 19.18 | 19.42 | 19.42 | -0.54% | 1,617,960 |
| Apr 30, 2026 | 18.32 | 19.67 | 18.25 | 19.53 | 19.53 | 7.52% | 2,221,384 |
| Apr 29, 2026 | 18.47 | 18.47 | 17.59 | 18.16 | 18.16 | -2.52% | 2,167,024 |
| Apr 28, 2026 | 19.86 | 20.08 | 18.58 | 18.63 | 18.63 | -6.00% | 1,470,278 |
| Apr 27, 2026 | 20.20 | 20.49 | 19.69 | 19.82 | 19.82 | -2.65% | 1,195,296 |
| Apr 24, 2026 | 20.88 | 21.11 | 20.15 | 20.36 | 20.36 | -1.55% | 883,281 |
| Apr 23, 2026 | 20.83 | 21.62 | 20.10 | 20.68 | 20.68 | -0.48% | 2,210,594 |
| Apr 22, 2026 | 20.29 | 20.98 | 20.00 | 20.78 | 20.78 | 3.74% | 1,301,019 |
| Apr 21, 2026 | 21.35 | 21.54 | 19.99 | 20.03 | 20.03 | -5.70% | 1,340,719 |
| Apr 20, 2026 | 20.88 | 21.86 | 20.79 | 21.24 | 21.24 | 3.06% | 1,718,590 |
| Apr 17, 2026 | 20.68 | 21.32 | 20.36 | 20.61 | 20.61 | 2.59% | 1,982,821 |
| Apr 16, 2026 | 20.60 | 21.05 | 20.01 | 20.09 | 20.09 | -2.76% | 1,188,308 |
| Apr 15, 2026 | 21.47 | 21.96 | 20.40 | 20.66 | 20.66 | -2.13% | 1,340,575 |
| Apr 14, 2026 | 20.33 | 21.12 | 20.05 | 21.11 | 21.11 | 5.02% | 2,579,598 |
| Apr 13, 2026 | 18.91 | 20.30 | 18.91 | 20.10 | 20.10 | 4.80% | 1,111,015 |
| Apr 10, 2026 | 19.71 | 19.82 | 18.92 | 19.18 | 19.18 | -2.54% | 926,363 |
| Apr 9, 2026 | 19.34 | 19.84 | 18.91 | 19.68 | 19.68 | 1.71% | 982,648 |
| Apr 8, 2026 | 19.32 | 19.77 | 18.79 | 19.35 | 19.35 | 5.85% | 1,919,489 |
| Apr 7, 2026 | 19.19 | 19.71 | 18.11 | 18.28 | 18.28 | -4.64% | 1,725,071 |
| Apr 6, 2026 | 18.46 | 19.34 | 18.35 | 19.17 | 19.17 | 3.01% | 1,573,121 |
| Apr 2, 2026 | 18.25 | 19.10 | 18.08 | 18.61 | 18.61 | -1.06% | 1,034,184 |
| Apr 1, 2026 | 19.22 | 19.47 | 18.29 | 18.81 | 18.81 | -1.88% | 1,870,567 |
| Mar 31, 2026 | 19.62 | 20.30 | 18.89 | 19.17 | 19.17 | -2.12% | 1,819,677 |
| Mar 30, 2026 | 21.20 | 21.35 | 19.54 | 19.59 | 19.59 | -6.74% | 2,053,247 |
| Mar 27, 2026 | 22.82 | 22.97 | 20.94 | 21.00 | 21.00 | -9.95% | 2,389,469 |
| Mar 26, 2026 | 23.81 | 24.30 | 22.98 | 23.32 | 23.32 | -3.87% | 1,805,650 |
| Mar 25, 2026 | 24.76 | 25.05 | 23.79 | 24.26 | 24.26 | -1.02% | 1,212,913 |
| Mar 24, 2026 | 24.65 | 24.89 | 24.03 | 24.51 | 24.51 | -2.31% | 2,018,952 |
| Mar 23, 2026 | 25.87 | 26.38 | 24.96 | 25.09 | 25.09 | 1.09% | 2,170,194 |
| Mar 20, 2026 | 24.69 | 25.01 | 23.91 | 24.82 | 24.82 | 0.77% | 2,424,054 |
| Mar 19, 2026 | 25.04 | 25.43 | 24.18 | 24.63 | 24.63 | 3.27% | 2,829,798 |
| Mar 18, 2026 | 23.91 | 24.45 | 23.56 | 23.85 | 23.85 | -0.25% | 1,680,521 |
| Mar 17, 2026 | 23.16 | 24.79 | 23.03 | 23.91 | 23.91 | 9.13% | 3,611,245 |
| Mar 16, 2026 | 21.79 | 22.34 | 21.42 | 21.91 | 21.91 | 1.48% | 1,362,139 |
| Mar 13, 2026 | 21.03 | 21.85 | 20.91 | 21.59 | 21.59 | 3.43% | 2,052,055 |
| Mar 12, 2026 | 21.51 | 22.06 | 20.69 | 20.88 | 20.88 | -5.80% | 1,419,067 |
| Mar 11, 2026 | 21.57 | 22.54 | 21.15 | 22.16 | 22.16 | 1.28% | 1,931,755 |
| Mar 10, 2026 | 21.24 | 22.11 | 20.43 | 21.88 | 21.88 | 4.79% | 1,533,314 |