If you'd invested in Tandem Diabetes Care (TNDM): performance and returns
Looking for Tandem Diabetes Care's share price history and how much the stock has returned? Here's its year-by-year performance and what $1,000 invested at different dates would be worth today.
💰 Calculator: how much would Tandem Diabetes Care have returned?
This calculator shows how much Tandem Diabetes Care stock would have returned based on the amount invested and the starting year. Pick a sum and a year and you'll instantly see what it would be worth today and the total gain. Real prices, excluding dividends.
If I'd invested $1,000 in Tandem Diabetes Care
| Investment | Worth today | Gain |
|---|---|---|
| 1 years ago | $431 | -57% |
| 3 years ago | $346 | -65% |
| 5 years ago | $162 | -84% |
| 10 years ago | $132 | -87% |
| since inception (2013) | $60.30 | -94% |
Return by year (Tandem Diabetes Care)
| Year | Return | $1,000 invested at year start |
|---|---|---|
| 2026 (YTD) | -29% | $707 (-29%) |
| 2025 | -39% | $431 (-57%) |
| 2024 | +22% | $525 (-47%) |
| 2023 | -34% | $346 (-65%) |
| 2022 | -70% | $103 (-90%) |
| 2021 | +57% | $162 (-84%) |
| 2020 | +61% | $261 (-74%) |
| 2019 | +57% | $409 (-59%) |
| 2018 | +1509% | $6,585 (+558%) |
| 2017 | -89% | $723 (-28%) |
| 2016 | -82% | $132 (-87%) |
Frequently asked questions
How much does TNDM return?
$1,000 invested in Tandem Diabetes Care 10 years ago would be worth $132 today, i.e. -18%/yr on average (price, excluding dividends).
What was TNDM's best/worst year?
Best year: 2018 (+1509%). Worst year: 2017 (-89%). Year-by-year detail is above.
How much would $1,000 invested in TNDM since inception be worth?
Since 2013, $1,000 would have become $60.30 (-94%). Past performance is not a guarantee.
Do Tandem Diabetes Care's returns include dividends?
No — these returns are price-only. If Tandem Diabetes Care pays a dividend, its total return would be somewhat higher — see its dividend page.
What is Tandem Diabetes Care's average annual return (ROI)?
Tandem Diabetes Care's return on investment is about -18%/yr over 10 years (price, excluding dividends), versus the S&P 500's ~10%/yr over the long run.