Wall Street RegretsThe regret calculator.

What if you'd held MNSB?

A $1,000 investment in MainStreet Bancshares, Inc. (MNSB) at the month-end close of 2005-09 would be worth $2,644 at the close of 2026-09 — +164.4% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $9,354.

$1,000 since 2005$2,644Total return+164.4%Multiple2.6×CAGR+4.7%

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$2,644Gain+$1,644 (+164.4%)Multiple2.6×CAGR+4.7%

    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.

    2005$2,6442006$2,6562007$2,1952008$3,5282009$5,8222010$5,7562011$5,6532012$5,5672013$5,4832014$3,5932015$3,2702016$2,3562017$2,0482018$1,6612019$1,6232020$1,2052021$1,6382022$1,1272023$9982024$1,0872025$1,4552026$1,266

    Every year, $1,000 from 2005

    YearValue of $1,000Year return
    2005$1,000
    2006$1,210+21.0%
    2007$753-37.8%
    2008$456-39.4%
    2009$461+1.1%
    2010$470+1.8%
    2011$477+1.6%
    2012$484+1.5%
    2013$739+52.6%
    2014$812+9.9%
    2015$1,127+38.8%
    2016$1,296+15.0%
    2017$1,599+23.3%
    2018$1,636+2.3%
    2019$2,205+34.8%
    2020$1,621-26.5%
    2021$2,357+45.4%
    2022$2,661+12.9%
    2023$2,444-8.2%
    2024$1,825-25.3%
    2025$2,098+15.0%
    2026$2,656+26.6%

    Best and worst month-end to buy

    The best single month-end close to have bought MNSB was 2009-03 ($3.24): $1,000 then is $7,852 today. The worst was 2023-02 ($27.52): $1,000 then is $924.

    FAQ

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

    A $1,000 investment in MainStreet Bancshares, Inc. (MNSB) at the start of 2005 would be worth about $2,644 today, a total return of +164.4%. Dividends are reinvested in these figures.

    What were the best and worst years for MNSB?

    MainStreet Bancshares, Inc. (MNSB)'s strongest calendar year since 2005 was 2013, a +52.6% return — $1,000 held through that year became about $1,526 by year-end. Its weakest year was 2008, at -39.4%.

    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 MNSB have grown?

    Investing $100 at the end of every month since 2005-09 would have grown to about $69,955 on $25,300 invested.

    Did MNSB 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 $9,354. MNSB trailed the S&P 500 by +71.7% 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

    MainStreet Bancshares, Inc. (MNSB) historical total-return data from 2005-09 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.