What if you'd held MOS?
A $1,000 investment in Mosaic Company (The) (MOS) at the month-end close of 1988-01 would be worth $3,194 at the close of 2026-08 — +219.4% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $29,984.
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 1988
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1988 | $1,000 | — |
| 1989 | $787 | -21.3% |
| 1990 | $839 | +6.5% |
| 1991 | $1,397 | +66.6% |
| 1992 | $1,074 | -23.1% |
| 1993 | $1,152 | +7.3% |
| 1994 | $1,113 | -3.4% |
| 1995 | $2,090 | +87.8% |
| 1996 | $2,023 | -3.2% |
| 1997 | $1,709 | -15.5% |
| 1998 | $1,129 | -33.9% |
| 1999 | $881 | -22.0% |
| 2000 | $857 | -2.7% |
| 2001 | $719 | -16.1% |
| 2002 | $593 | -17.4% |
| 2003 | $557 | -6.2% |
| 2004 | $915 | +64.3% |
| 2005 | $821 | -10.3% |
| 2006 | $1,198 | +45.9% |
| 2007 | $5,291 | +341.7% |
| 2008 | $1,944 | -63.3% |
| 2009 | $3,460 | +78.0% |
| 2010 | $4,440 | +28.3% |
| 2011 | $2,941 | -33.8% |
| 2012 | $3,343 | +13.7% |
| 2013 | $2,841 | -15.0% |
| 2014 | $2,802 | -1.4% |
| 2015 | $1,739 | -37.9% |
| 2016 | $1,925 | +10.7% |
| 2017 | $1,725 | -10.4% |
| 2018 | $1,970 | +14.2% |
| 2019 | $1,472 | -25.3% |
| 2020 | $1,584 | +7.6% |
| 2021 | $2,727 | +72.2% |
| 2022 | $3,076 | +12.8% |
| 2023 | $2,571 | -16.4% |
| 2024 | $1,822 | -29.1% |
| 2025 | $1,842 | +1.1% |
| 2026 | $1,731 | -6.0% |
Best and worst month-end to buy
The best single month-end close to have bought MOS was 2003-09 ($4.62): $1,000 then is $4,812 today. The worst was 2008-06 ($104): $1,000 then is $213.
FAQ
What would $1,000 in MOS be worth today?
A $1,000 investment in Mosaic Company (The) (MOS) at the start of 1988 would be worth about $3,194 today, a total return of +219.4%. Dividends are reinvested in these figures.
What were the best and worst years for MOS?
Mosaic Company (The) (MOS)'s strongest calendar year since 1988 was 2007, a +341.7% return — $1,000 held through that year became about $4,417 by year-end. Its weakest year was 2008, at -63.3%.
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 MOS have grown?
Investing $100 at the end of every month since 1988-01 would have grown to about $62,177 on $46,400 invested.
Did MOS beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $29,984. MOS trailed the S&P 500 by +89.3% 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
Mosaic Company (The) (MOS) historical total-return data from 1988-01 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.