What if you'd held UMC?
A $1,000 investment in United Microelectronics Corporation (NEW) (UMC) at the month-end close of 2000-09 would be worth $3,873 at the close of 2026-09 — +287.3% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $8,710.
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 2000
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2000 | $1,000 | — |
| 2001 | $1,338 | +33.8% |
| 2002 | $482 | -64.0% |
| 2003 | $738 | +53.2% |
| 2004 | $569 | -23.0% |
| 2005 | $505 | -11.3% |
| 2006 | $576 | +14.2% |
| 2007 | $410 | -28.9% |
| 2008 | $255 | -37.8% |
| 2009 | $505 | +98.0% |
| 2010 | $422 | -16.4% |
| 2011 | $309 | -26.7% |
| 2012 | $299 | -3.3% |
| 2013 | $316 | +5.6% |
| 2014 | $363 | +15.0% |
| 2015 | $315 | -13.4% |
| 2016 | $306 | -2.8% |
| 2017 | $433 | +41.5% |
| 2018 | $339 | -21.8% |
| 2019 | $528 | +56.0% |
| 2020 | $1,748 | +230.7% |
| 2021 | $2,502 | +43.2% |
| 2022 | $1,493 | -40.3% |
| 2023 | $2,079 | +39.2% |
| 2024 | $1,683 | -19.0% |
| 2025 | $2,168 | +28.8% |
| 2026 | $5,574 | +157.1% |
Best and worst month-end to buy
The best single month-end close to have bought UMC was 2009-02 ($0.82): $1,000 then is $24,190 today. The worst was 2026-06 ($26.74): $1,000 then is $743.
FAQ
What would $1,000 in UMC be worth today?
A $1,000 investment in United Microelectronics Corporation (NEW) (UMC) at the start of 2000 would be worth about $3,873 today, a total return of +287.3%. Dividends are reinvested in these figures.
What were the best and worst years for UMC?
United Microelectronics Corporation (NEW) (UMC)'s strongest calendar year since 2000 was 2020, a +230.7% return — $1,000 held through that year became about $3,307 by year-end. Its weakest year was 2002, at -64.0%.
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 UMC have grown?
Investing $100 at the end of every month since 2000-09 would have grown to about $331,197 on $31,300 invested.
Did UMC 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 $8,710. UMC trailed the S&P 500 by +55.5% 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
United Microelectronics Corporation (NEW) (UMC) historical total-return data from 2000-09 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 2026-09-03. Not financial advice.