What if you'd held CSTM?
A $1,000 investment in Constellium SE Ordinary Shares (France) (CSTM) at the month-end close of 2013-05 would be worth $1,805 at the close of 2026-08 — +80.5% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $4,727.
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 2013
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2013 | $1,000 | — |
| 2014 | $706 | -29.4% |
| 2015 | $331 | -53.1% |
| 2016 | $254 | -23.4% |
| 2017 | $479 | +89.0% |
| 2018 | $300 | -37.3% |
| 2019 | $576 | +91.7% |
| 2020 | $601 | +4.4% |
| 2021 | $770 | +28.0% |
| 2022 | $508 | -33.9% |
| 2023 | $858 | +68.7% |
| 2024 | $441 | -48.5% |
| 2025 | $810 | +83.5% |
| 2026 | $1,141 | +40.8% |
Best and worst month-end to buy
The best single month-end close to have bought CSTM was 2015-10 ($3.77): $1,000 then is $7,040 today. The worst was 2026-05 ($34.26): $1,000 then is $775.
FAQ
What would $1,000 in CSTM be worth today?
A $1,000 investment in Constellium SE Ordinary Shares (France) (CSTM) at the start of 2013 would be worth about $1,805 today, a total return of +80.5%. Dividends are reinvested in these figures.
What were the best and worst years for CSTM?
Constellium SE Ordinary Shares (France) (CSTM)'s strongest calendar year since 2013 was 2019, a +91.7% return — $1,000 held through that year became about $1,917 by year-end. Its weakest year was 2015, at -53.1%.
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 CSTM have grown?
Investing $100 at the end of every month since 2013-05 would have grown to about $36,310 on $16,000 invested.
Did CSTM beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $4,727. CSTM trailed the S&P 500 by +61.8% 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
Constellium SE Ordinary Shares (France) (CSTM) historical total-return data from 2013-05 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.