Wall Street RegretsThe regret calculator.

What if you'd held RBBN?

A $1,000 investment in Ribbon Communications Inc. (RBBN) at the month-end close of 2000-05 would be worth $16.70 at the close of 2026-08 — -98.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,426.

$1,000 since 2000$16.70Total return-98.3%Multiple0.02×CAGR-14.4%

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$16.70Gain+$-983 (-98.3%)Multiple0.0×CAGR-14.4%

    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.

    2000$16.702001$16.082002$87.882003$4062004$53.852005$70.862006$1092007$61.612008$69.642009$2572010$1922011$1522012$1692013$2392014$1292015$1022016$2852017$3222018$2632019$4212020$6552021$3092022$3362023$7282024$7002025$4882026$705

    Every year, $1,000 from 2000

    YearValue of $1,000Year return
    2000$1,000
    2001$183-81.7%
    2002$39.60-78.4%
    2003$299+654.0%
    2004$227-24.0%
    2005$147-35.1%
    2006$261+77.2%
    2007$231-11.5%
    2008$62.57-72.9%
    2009$83.56+33.5%
    2010$106+26.5%
    2011$95.05-10.1%
    2012$67.33-29.2%
    2013$125+85.3%
    2014$157+26.0%
    2015$56.48-64.1%
    2016$49.90-11.6%
    2017$61.23+22.7%
    2018$38.18-37.6%
    2019$24.55-35.7%
    2020$51.96+111.6%
    2021$47.92-7.8%
    2022$22.10-53.9%
    2023$22.97+3.9%
    2024$32.95+43.4%
    2025$22.81-30.8%
    2026$16.08-29.5%

    Best and worst month-end to buy

    The best single month-end close to have bought RBBN was 2002-09 ($1.05): $1,000 then is $1,933 today. The worst was 2000-07 ($311): $1,000 then is $6.53.

    FAQ

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

    A $1,000 investment in Ribbon Communications Inc. (RBBN) at the start of 2000 would be worth about $16.70 today, a total return of -98.3%. Dividends are reinvested in these figures.

    What were the best and worst years for RBBN?

    Ribbon Communications Inc. (RBBN)'s strongest calendar year since 2000 was 2003, a +654.0% return — $1,000 held through that year became about $7,540 by year-end. Its weakest year was 2001, at -81.7%.

    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 RBBN have grown?

    Investing $100 at the end of every month since 2000-05 would have grown to about $9,130 on $31,600 invested.

    Did RBBN beat the S&P 500?

    Over the same period, $1,000 in the S&P 500 index would be worth $5,426. RBBN trailed the S&P 500 by +99.7% 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

    Ribbon Communications Inc. (RBBN) historical total-return data from 2000-05 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.

    Full methodology →

    What if you'd held…

    Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.