What if you'd held TMO?
A $1,000 investment in Thermo Fisher Scientific Inc (TMO) at the month-end close of 1980-03 would be worth $359,005 at the close of 2026-08 — +35800.5% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $75,502.
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 1980
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1980 | $1,000 | — |
| 1981 | $691 | -30.9% |
| 1982 | $500 | -27.6% |
| 1983 | $1,073 | +114.5% |
| 1984 | $976 | -9.1% |
| 1985 | $1,473 | +50.9% |
| 1986 | $1,866 | +26.7% |
| 1987 | $1,496 | -19.9% |
| 1988 | $2,223 | +48.6% |
| 1989 | $3,362 | +51.2% |
| 1990 | $3,169 | -5.7% |
| 1991 | $5,118 | +61.5% |
| 1992 | $5,173 | +1.1% |
| 1993 | $6,933 | +34.0% |
| 1994 | $7,407 | +6.8% |
| 1995 | $12,875 | +73.8% |
| 1996 | $15,322 | +19.0% |
| 1997 | $16,344 | +6.7% |
| 1998 | $6,291 | -61.5% |
| 1999 | $5,571 | -11.4% |
| 2000 | $11,050 | +98.3% |
| 2001 | $10,302 | -6.8% |
| 2002 | $8,687 | -15.7% |
| 2003 | $10,880 | +25.2% |
| 2004 | $13,035 | +19.8% |
| 2005 | $13,009 | -0.2% |
| 2006 | $19,555 | +50.3% |
| 2007 | $24,904 | +27.4% |
| 2008 | $14,710 | -40.9% |
| 2009 | $20,591 | +40.0% |
| 2010 | $23,903 | +16.1% |
| 2011 | $19,417 | -18.8% |
| 2012 | $27,799 | +43.2% |
| 2013 | $48,867 | +75.8% |
| 2014 | $55,250 | +13.1% |
| 2015 | $62,846 | +13.7% |
| 2016 | $62,772 | -0.1% |
| 2017 | $84,759 | +35.0% |
| 2018 | $100,194 | +18.2% |
| 2019 | $145,832 | +45.5% |
| 2020 | $209,589 | +43.7% |
| 2021 | $300,843 | +43.5% |
| 2022 | $248,842 | -17.3% |
| 2023 | $240,492 | -3.4% |
| 2024 | $236,348 | -1.7% |
| 2025 | $264,184 | +11.8% |
| 2026 | $280,283 | +6.1% |
Best and worst month-end to buy
The best single month-end close to have bought TMO was 1982-07 ($0.88): $1,000 then is $696,413 today. The worst was 2021-12 ($659): $1,000 then is $932.
FAQ
What would $1,000 in TMO be worth today?
A $1,000 investment in Thermo Fisher Scientific Inc (TMO) at the start of 1980 would be worth about $359,005 today, a total return of +35800.5%. Dividends are reinvested in these figures.
What were the best and worst years for TMO?
Thermo Fisher Scientific Inc (TMO)'s strongest calendar year since 1980 was 1983, a +114.5% return — $1,000 held through that year became about $2,145 by year-end. Its weakest year was 1998, at -61.5%.
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 TMO have grown?
Investing $100 at the end of every month since 1980-03 would have grown to about $3.89M on $55,800 invested.
Did TMO beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $75,502. TMO beat the S&P 500 by +375.5% 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
Thermo Fisher Scientific Inc (TMO) historical total-return data from 1980-03 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.