What if you'd held MDYG?
A $1,000 investment in State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) at the month-end close of 2005-11 would be worth $7,585 at the close of 2026-08 — +658.5% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $6,169.
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 | $1,112 | +11.2% |
| 2007 | $1,212 | +8.9% |
| 2008 | $708 | -41.6% |
| 2009 | $1,105 | +56.2% |
| 2010 | $1,406 | +27.3% |
| 2011 | $1,388 | -1.3% |
| 2012 | $1,622 | +16.8% |
| 2013 | $2,148 | +32.5% |
| 2014 | $2,313 | +7.7% |
| 2015 | $2,354 | +1.8% |
| 2016 | $2,695 | +14.5% |
| 2017 | $3,223 | +19.6% |
| 2018 | $2,886 | -10.5% |
| 2019 | $3,638 | +26.1% |
| 2020 | $4,460 | +22.6% |
| 2021 | $5,284 | +18.5% |
| 2022 | $4,284 | -18.9% |
| 2023 | $5,025 | +17.3% |
| 2024 | $5,821 | +15.8% |
| 2025 | $6,241 | +7.2% |
| 2026 | $7,508 | +20.3% |
Best and worst month-end to buy
The best single month-end close to have bought MDYG was 2009-02 ($9.36): $1,000 then is $11,848 today. The worst was 2026-06 ($112): $1,000 then is $989.
FAQ
What would $1,000 in MDYG be worth today?
A $1,000 investment in State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) at the start of 2005 would be worth about $7,585 today, a total return of +658.5%. Dividends are reinvested in these figures.
What were the best and worst years for MDYG?
State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG)'s strongest calendar year since 2005 was 2009, a +56.2% return — $1,000 held through that year became about $1,562 by year-end. Its weakest year was 2008, at -41.6%.
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 MDYG have grown?
Investing $100 at the end of every month since 2005-11 would have grown to about $93,921 on $25,000 invested.
Did MDYG beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $6,169. MDYG beat the S&P 500 by +23.0% 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
State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG) historical total-return data from 2005-11 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.