What if you'd held IMOS?
A $1,000 investment in ChipMOS TECHNOLOGIES INC. (IMOS) at the month-end close of 2003-07 would be worth $15,285 at the close of 2026-09 — +1428.5% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $12,060.
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 2003
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2003 | $1,000 | — |
| 2004 | $678 | -32.2% |
| 2005 | $618 | -8.9% |
| 2006 | $723 | +17.1% |
| 2007 | $454 | -37.3% |
| 2008 | $26.60 | -94.1% |
| 2009 | $75.63 | +184.3% |
| 2010 | $163 | +115.4% |
| 2011 | $137 | -15.7% |
| 2012 | $313 | +127.7% |
| 2013 | $523 | +67.2% |
| 2014 | $638 | +22.1% |
| 2015 | $547 | -14.4% |
| 2016 | $526 | -3.9% |
| 2017 | $657 | +25.1% |
| 2018 | $572 | -13.0% |
| 2019 | $802 | +40.2% |
| 2020 | $912 | +13.8% |
| 2021 | $1,367 | +49.8% |
| 2022 | $921 | -32.6% |
| 2023 | $1,241 | +34.8% |
| 2024 | $895 | -27.9% |
| 2025 | $1,471 | +64.3% |
| 2026 | $2,897 | +97.0% |
Best and worst month-end to buy
The best single month-end close to have bought IMOS was 2008-12 ($0.53): $1,000 then is $108,904 today. The worst was 2026-05 ($69.35): $1,000 then is $831.
FAQ
What would $1,000 in IMOS be worth today?
A $1,000 investment in ChipMOS TECHNOLOGIES INC. (IMOS) at the start of 2003 would be worth about $15,285 today, a total return of +1428.5%. Dividends are reinvested in these figures.
What were the best and worst years for IMOS?
ChipMOS TECHNOLOGIES INC. (IMOS)'s strongest calendar year since 2003 was 2009, a +184.3% return — $1,000 held through that year became about $2,843 by year-end. Its weakest year was 2008, at -94.1%.
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 IMOS have grown?
Investing $100 at the end of every month since 2003-07 would have grown to about $247,886 on $27,900 invested.
Did IMOS 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 $12,060. IMOS beat the S&P 500 by +26.7% 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
ChipMOS TECHNOLOGIES INC. (IMOS) historical total-return data from 2003-07 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.