What if you'd held SIMO?
A $1,000 investment in Silicon Motion Technology Corporation (SIMO) at the month-end close of 2005-06 would be worth $32,855 at the close of 2026-08 — +3185.5% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $6,470.
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 2005
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2005 | $1,000 | — |
| 2006 | $1,323 | +32.3% |
| 2007 | $1,482 | +12.0% |
| 2008 | $191 | -87.1% |
| 2009 | $284 | +49.1% |
| 2010 | $354 | +24.6% |
| 2011 | $1,707 | +382.3% |
| 2012 | $1,185 | -30.6% |
| 2013 | $1,240 | +4.7% |
| 2014 | $2,138 | +72.4% |
| 2015 | $2,895 | +35.4% |
| 2016 | $3,986 | +37.7% |
| 2017 | $5,069 | +27.2% |
| 2018 | $3,391 | -33.1% |
| 2019 | $5,149 | +51.9% |
| 2020 | $5,056 | -1.8% |
| 2021 | $10,206 | +101.9% |
| 2022 | $7,105 | -30.4% |
| 2023 | $6,756 | -4.9% |
| 2024 | $6,153 | -8.9% |
| 2025 | $10,884 | +76.9% |
| 2026 | $28,734 | +164.0% |
Best and worst month-end to buy
The best single month-end close to have bought SIMO was 2009-02 ($1.45): $1,000 then is $167,448 today. The worst was 2026-06 ($333): $1,000 then is $730.
FAQ
What would $1,000 in SIMO be worth today?
A $1,000 investment in Silicon Motion Technology Corporation (SIMO) at the start of 2005 would be worth about $32,855 today, a total return of +3185.5%. Dividends are reinvested in these figures.
What were the best and worst years for SIMO?
Silicon Motion Technology Corporation (SIMO)'s strongest calendar year since 2005 was 2011, a +382.3% return — $1,000 held through that year became about $4,823 by year-end. Its weakest year was 2008, at -87.1%.
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 SIMO have grown?
Investing $100 at the end of every month since 2005-06 would have grown to about $553,333 on $25,500 invested.
Did SIMO beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $6,470. SIMO beat the S&P 500 by +407.8% 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
Silicon Motion Technology Corporation (SIMO) historical total-return data from 2005-06 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.