What if you'd held CNSY?
A $1,000 investment in Cerenome, Inc. (CNSY) at the month-end close of 2001-07 would be worth $0.0001737 at the close of 2026-09 — -100.0% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $10,228.
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 2026-09, dividends included.
Every year, $1,000 from 2001
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2001 | $1,000 | — |
| 2002 | $1,250 | +25.0% |
| 2003 | $953 | -23.8% |
| 2004 | $859 | -9.8% |
| 2005 | $2,594 | +201.8% |
| 2006 | $2,044 | -21.2% |
| 2007 | $1,891 | -7.5% |
| 2008 | $1,128 | -40.3% |
| 2009 | $1,906 | +69.0% |
| 2010 | $1,622 | -14.9% |
| 2011 | $688 | -57.6% |
| 2012 | $875 | +27.3% |
| 2013 | $803 | -8.2% |
| 2014 | $153 | -80.9% |
| 2015 | $59.38 | -61.2% |
| 2016 | $31.46 | -47.0% |
| 2017 | $6.25 | -80.1% |
| 2018 | $0.60 | -90.3% |
| 2019 | $0.10 | -83.4% |
| 2020 | $0.08 | -15.8% |
| 2021 | $0.04 | -48.0% |
| 2022 | $0.01 | -69.5% |
| 2023 | $0.004861 | -63.5% |
| 2024 | $0.003194 | -34.3% |
| 2025 | $0.001417 | -55.7% |
| 2026 | $0.0003311 | -76.6% |
Best and worst month-end to buy
The best single month-end close to have bought CNSY was 2026-08 ($2.82): $1,000 then is $1,057 today. The worst was 2006-03 ($24.64M): $1,000 then is $0.000121.
FAQ
What would $1,000 in CNSY be worth today?
A $1,000 investment in Cerenome, Inc. (CNSY) at the start of 2001 would be worth about $0.0001737 today, a total return of -100.0%. Dividends are reinvested in these figures.
What were the best and worst years for CNSY?
Cerenome, Inc. (CNSY)'s strongest calendar year since 2001 was 2005, a +201.8% return — $1,000 held through that year became about $3,018 by year-end. Its weakest year was 2018, at -90.3%.
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 CNSY have grown?
Investing $100 at the end of every month since 2001-07 would have grown to about $1,060 on $30,300 invested.
Did CNSY beat the S&P 500?
Over the same period, $1,000 in the S&P 500 with dividends reinvested (the S&P 500 Total Return index) would be worth $10,228. CNSY trailed the S&P 500 by +100.0% 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
Cerenome, Inc. (CNSY) historical total-return data from 2001-07 to 2026-09, reduced to month-end closes for the tables above.
Returns use adjusted close prices — adjusted for stock splits and reinvested dividends, the same convention used by major brokerages. End-of-day and live prices come from EODHD; parts of the deep historical series are carried over from Yahoo Finance data. 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 (EODHD): 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 EODHD and Yahoo Finance. As of 2026-09-03. Not financial advice.