Wall Street RegretsThe regret calculator.

What if you'd held RTB?

A $1,000 investment in RTB Digital, Inc. (RTB) at the month-end close of 2010-04 would be worth $36.32 at the close of 2026-09 — -96.4% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $8,794.

$1,000 since 2010$36.32Total return-96.4%Multiple0.04×CAGR-18.3%

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$36.32Gain+$-964 (-96.4%)Multiple0.0×CAGR-18.3%

    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.

    2010$36.322011$1362012$2722013$2722014$1362015$1362016$1822017$2722018$1822019$16.022020$54.482021$5.002022$7.782023$71.062024$78.572025$2512026$2,043

    Every year, $1,000 from 2010

    YearValue of $1,000Year return
    2010$1,000
    2011$500-50.0%
    2012$5000.0%
    2013$1,000+100.0%
    2014$1,0000.0%
    2015$750-25.0%
    2016$500-33.3%
    2017$750+50.0%
    2018$8,500+1033.3%
    2019$2,500-70.6%
    2020$27,250+990.0%
    2021$17,500-35.8%
    2022$1,917-89.0%
    2023$1,733-9.6%
    2024$542-68.8%
    2025$66.67-87.7%
    2026$136+104.3%

    Best and worst month-end to buy

    The best single month-end close to have bought RTB was 2026-05 ($4.36): $1,000 then is $2,624 today. The worst was 2021-03 ($4,900): $1,000 then is $2.33.

    FAQ

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

    A $1,000 investment in RTB Digital, Inc. (RTB) at the start of 2010 would be worth about $36.32 today, a total return of -96.4%. Dividends are reinvested in these figures.

    What were the best and worst years for RTB?

    RTB Digital, Inc. (RTB)'s strongest calendar year since 2010 was 2018, a +1033.3% return — $1,000 held through that year became about $11,333 by year-end. Its weakest year was 2022, at -89.0%.

    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 RTB have grown?

    Investing $100 at the end of every month since 2010-04 would have grown to about $4,525 on $19,800 invested.

    Did RTB 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 $8,794. RTB trailed the S&P 500 by +99.6% 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

    RTB Digital, Inc. (RTB) historical total-return data from 2010-04 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.