What if you'd held IRWD?
A $1,000 investment in Ironwood Pharmaceuticals, Inc. (IRWD) at the month-end close of 2010-02 would be worth $391 at the close of 2026-09 — -60.9% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $9,472.
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 2026-09, dividends included.
Every year, $1,000 from 2010
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2010 | $1,000 | — |
| 2011 | $1,157 | +15.7% |
| 2012 | $1,071 | -7.4% |
| 2013 | $1,122 | +4.8% |
| 2014 | $1,480 | +32.0% |
| 2015 | $1,120 | -24.3% |
| 2016 | $1,477 | +31.9% |
| 2017 | $1,448 | -2.0% |
| 2018 | $1,001 | -30.9% |
| 2019 | $1,536 | +53.4% |
| 2020 | $1,314 | -14.4% |
| 2021 | $1,345 | +2.4% |
| 2022 | $1,429 | +6.3% |
| 2023 | $1,320 | -7.7% |
| 2024 | $511 | -61.3% |
| 2025 | $389 | -23.9% |
| 2026 | $491 | +26.4% |
Best and worst month-end to buy
The best single month-end close to have bought IRWD was 2025-05 ($0.60): $1,000 then is $7,100 today. The worst was 2018-07 ($16.15): $1,000 then is $264.
FAQ
What would $1,000 in IRWD be worth today?
A $1,000 investment in Ironwood Pharmaceuticals, Inc. (IRWD) at the start of 2010 would be worth about $391 today, a total return of -60.9%. Dividends are reinvested in these figures.
What were the best and worst years for IRWD?
Ironwood Pharmaceuticals, Inc. (IRWD)'s strongest calendar year since 2010 was 2019, a +53.4% return — $1,000 held through that year became about $1,534 by year-end. Its weakest year was 2024, at -61.3%.
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 IRWD have grown?
Investing $100 at the end of every month since 2010-02 would have grown to about $12,495 on $20,000 invested.
Did IRWD beat the S&P 500?
Over the same period, $1,000 in the S&P 500 with dividends reinvested (the S&P 500 Total Return index) would be worth $9,472. IRWD trailed the S&P 500 by +95.9% 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
Ironwood Pharmaceuticals, Inc. (IRWD) historical total-return data from 2010-02 to 2026-09, reduced to month-end closes for the tables above.
Returns use adjusted close prices — adjusted for stock splits and reinvested dividends, the same convention used by major brokerages. End-of-day and live prices come from EODHD; parts of the deep historical series are carried over from Yahoo Finance data. 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 (EODHD): 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 EODHD and Yahoo Finance. As of 2026-09-04. Not financial advice.