What is the market doing?
What the tape says about TNDM
Tandem Diabetes Care, Inc. is +85% over the past year while the S&P 500 is +23%: 63 points ahead of the market.
+85%
1-year return · S&P 500 +23%
- vs 200-day average
- +9.2%
vs 200-day average · close to trend
- RSI (14)
- 66
RSI (14) · neutral
- Below its 52-week high
- −24%
Below its 52-week high
Details›
- Last close2026-08-26
- $21.35
- 1 monthS&P 500 +3.7%
- +26%
- 1 yearS&P 500 +23%
- +85%
- 5 yearsS&P 500 +87%
- −80%
- vs 50-day average$18.65
- +14%
- 52-week high
- $28.26
- 52-week low
- $10.11
- Annualised volatility
- 76%
- Insider buying, net, 6 monthsForms 3/4/5 to 2026-06-30
- −$4K
| Year | Return |
|---|---|
| 2026 (year to date) | −2.9% |
| 2025 | −39% |
| 2024 | +22% |
| 2023 | −34% |
| 2022 | −70% |
| 2021 | +57% |
| 2020 | +61% |
| 2019 | +57% |
| 2018 | +1509% |
| 2017 | −89% |
| Month | Years | Positive | Average |
|---|---|---|---|
| Jan | 10 | 5 of 10 | +0.56% |
| Feb | 10 | 6 of 10 | +5.6% |
| Mar | 10 | 4 of 10 | −0.63% |
| Apr | 10 | 5 of 10 | +3.2% |
| May | 10 | 5 of 10 | +5.8% |
| Jun | 10 | 4 of 10 | +3.0% |
| Jul | 11 | 6 of 11 | +2.8% |
| Aug | 11 | 8 of 11 | +13% |
| Sep | 10 | 4 of 10 | −4.8% |
| Oct | 10 | 4 of 10 | −9.5% |
| Nov | 10 | 4 of 10 | −2.1% |
| Dec | 10 | 7 of 10 | +6.0% |
End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.