What if you'd held AGO?
A $1,000 investment in Assured Guaranty Ltd. (AGO) at the month-end close of 2004-04 would be worth $5,938 at the close of 2026-08 — +493.8% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $6,961.
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 2004
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2004 | $1,000 | — |
| 2005 | $1,299 | +29.9% |
| 2006 | $1,368 | +5.3% |
| 2007 | $1,374 | +0.4% |
| 2008 | $597 | -56.5% |
| 2009 | $1,157 | +93.7% |
| 2010 | $951 | -17.8% |
| 2011 | $715 | -24.8% |
| 2012 | $796 | +11.3% |
| 2013 | $1,344 | +68.8% |
| 2014 | $1,508 | +12.2% |
| 2015 | $1,561 | +3.5% |
| 2016 | $2,273 | +45.6% |
| 2017 | $2,068 | -9.0% |
| 2018 | $2,377 | +15.0% |
| 2019 | $3,093 | +30.1% |
| 2020 | $2,043 | -33.9% |
| 2021 | $3,317 | +62.3% |
| 2022 | $4,186 | +26.2% |
| 2023 | $5,129 | +22.5% |
| 2024 | $6,261 | +22.1% |
| 2025 | $6,301 | +0.6% |
| 2026 | $5,324 | -15.5% |
Best and worst month-end to buy
The best single month-end close to have bought AGO was 2009-02 ($3.30): $1,000 then is $22,797 today. The worst was 2025-01 ($92.98): $1,000 then is $809.
FAQ
What would $1,000 in AGO be worth today?
A $1,000 investment in Assured Guaranty Ltd. (AGO) at the start of 2004 would be worth about $5,938 today, a total return of +493.8%. Dividends are reinvested in these figures.
What were the best and worst years for AGO?
Assured Guaranty Ltd. (AGO)'s strongest calendar year since 2004 was 2009, a +93.7% return — $1,000 held through that year became about $1,937 by year-end. Its weakest year was 2008, at -56.5%.
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 AGO have grown?
Investing $100 at the end of every month since 2004-04 would have grown to about $100,865 on $26,900 invested.
Did AGO beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $6,961. AGO trailed the S&P 500 by +14.7% 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
Assured Guaranty Ltd. (AGO) historical total-return data from 2004-04 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.