Wall Street RegretsThe regret calculator.

What if you'd held DBVT?

A $1,000 investment in DBV Technologies S.A. (DBVT) at the month-end close of 2014-10 would be worth $267 at the close of 2026-09 — -73.3% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $4,701.

$1,000 since 2014$267Total return-73.3%Multiple0.27×CAGR-10.5%

Your scenario

Dates resolve to the nearest month-end close.
Leave empty for "held until today".
Invested at each month-end. Starts on the buy date.

Result

Worth$267Gain+$-733 (-73.3%)Multiple0.3×CAGR-10.5%

    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.

    2014$2672015$2482016$1852017$1922018$2742019$1,0492020$6292021$2,5712022$4,2092023$4,4022024$7,0672025$4,3592026$703

    Every year, $1,000 from 2014

    YearValue of $1,000Year return
    2014$1,000
    2015$1,339+33.9%
    2016$1,295-3.2%
    2017$907-30.0%
    2018$237-73.9%
    2019$395+66.7%
    2020$96.61-75.5%
    2021$59.00-38.9%
    2022$56.42-4.4%
    2023$35.14-37.7%
    2024$56.97+62.1%
    2025$353+520.4%
    2026$248-29.7%

    Best and worst month-end to buy

    The best single month-end close to have bought DBVT was 2024-09 ($0.70): $1,000 then is $19,243 today. The worst was 2017-07 ($89.08): $1,000 then is $151.

    FAQ

    What would $1,000 in DBVT be worth today?

    A $1,000 investment in DBV Technologies S.A. (DBVT) at the start of 2014 would be worth about $267 today, a total return of -73.3%. Dividends are reinvested in these figures.

    What were the best and worst years for DBVT?

    DBV Technologies S.A. (DBVT)'s strongest calendar year since 2014 was 2025, a +520.4% return — $1,000 held through that year became about $6,204 by year-end. Its weakest year was 2020, at -75.5%.

    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 DBVT have grown?

    Investing $100 at the end of every month since 2014-10 would have grown to about $34,337 on $14,400 invested.

    Did DBVT 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 $4,701. DBVT trailed the S&P 500 by +94.3% 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

    DBV Technologies S.A. (DBVT) historical total-return data from 2014-10 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.

    Full methodology →

    What if you'd held…

    Data: adjusted close prices via EODHD and Yahoo Finance. As of 2026-09-04. Not financial advice.