Wall Street RegretsThe regret calculator.

What if you'd held MGK?

A $1,000 investment in Vanguard Morningstar Mega Cap Growth ETF (MGK) at the month-end close of 2007-12 would be worth $10,937 at the close of 2026-09 — +993.7% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $7,501.

$1,000 since 2007$10,937Total return+993.7%Multiple10.9×CAGR+13.6%

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$10,937Gain+$9,937 (+993.7%)Multiple10.9×CAGR+13.6%

    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.

    2007$10,9372008$10,9372009$17,1542010$12,7082011$11,0982012$10,7672013$9,1792014$6,9252015$6,1172016$5,9052017$5,5422018$4,2802019$4,4082020$3,2092021$2,2752022$1,7702023$2,6642024$1,7562025$1,3212026$1,095

    Every year, $1,000 from 2007

    YearValue of $1,000Year return
    2007$1,000
    2008$638-36.2%
    2009$861+35.0%
    2010$985+14.5%
    2011$1,016+3.1%
    2012$1,192+17.3%
    2013$1,579+32.6%
    2014$1,788+13.2%
    2015$1,852+3.6%
    2016$1,973+6.5%
    2017$2,555+29.5%
    2018$2,481-2.9%
    2019$3,408+37.4%
    2020$4,807+41.0%
    2021$6,181+28.6%
    2022$4,105-33.6%
    2023$6,227+51.7%
    2024$8,278+32.9%
    2025$9,988+20.7%
    2026$10,937+9.5%

    Best and worst month-end to buy

    The best single month-end close to have bought MGK was 2009-02 ($4.64): $1,000 then is $19,446 today. The worst was 2026-05 ($91.18): $1,000 then is $990.

    FAQ

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

    A $1,000 investment in Vanguard Morningstar Mega Cap Growth ETF (MGK) at the start of 2007 would be worth about $10,937 today, a total return of +993.7%. Dividends are reinvested in these figures.

    What were the best and worst years for MGK?

    Vanguard Morningstar Mega Cap Growth ETF (MGK)'s strongest calendar year since 2007 was 2023, a +51.7% return — $1,000 held through that year became about $1,517 by year-end. Its weakest year was 2008, at -36.2%.

    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 MGK have grown?

    Investing $100 at the end of every month since 2007-12 would have grown to about $136,519 on $22,600 invested.

    Did MGK 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 $7,501. MGK beat the S&P 500 by +45.8% 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

    Vanguard Morningstar Mega Cap Growth ETF (MGK) historical total-return data from 2007-12 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.