What if you'd held IRTC?
A $1,000 investment in iRhythm Holdings, Inc. (IRTC) at the month-end close of 2016-10 would be worth $5,000 at the close of 2026-08 — +400.0% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $3,625.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-08, dividends included.
Every year, $1,000 from 2016
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2016 | $1,000 | — |
| 2017 | $1,868 | +86.8% |
| 2018 | $2,316 | +24.0% |
| 2019 | $2,270 | -2.0% |
| 2020 | $7,907 | +248.4% |
| 2021 | $3,923 | -50.4% |
| 2022 | $3,122 | -20.4% |
| 2023 | $3,568 | +14.3% |
| 2024 | $3,006 | -15.8% |
| 2025 | $5,915 | +96.8% |
| 2026 | $4,158 | -29.7% |
Best and worst month-end to buy
The best single month-end close to have bought IRTC was 2016-10 ($24.95): $1,000 then is $5,000 today. The worst was 2020-11 ($245): $1,000 then is $510.
FAQ
What would $1,000 in IRTC be worth today?
A $1,000 investment in iRhythm Holdings, Inc. (IRTC) at the start of 2016 would be worth about $5,000 today, a total return of +400.0%. Dividends are reinvested in these figures.
What were the best and worst years for IRTC?
iRhythm Holdings, Inc. (IRTC)'s strongest calendar year since 2016 was 2020, a +248.4% return — $1,000 held through that year became about $3,484 by year-end. Its weakest year was 2021, at -50.4%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in IRTC have grown?
Investing $100 at the end of every month since 2016-10 would have grown to about $18,073 on $11,900 invested.
Did IRTC beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $3,625. IRTC beat the S&P 500 by +37.9% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
iRhythm Holdings, Inc. (IRTC) historical total-return data from 2016-10 to 2026-08, reduced to month-end closes for the tables above.
Returns use adjusted close prices from Yahoo Finance historical data — adjusted for stock splits and reinvested dividends — the same convention used by major brokerages. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (Yahoo Finance): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.