Wall Street RegretsThe regret calculator.

What if you'd held NPCE?

A $1,000 investment in Neuropace, Inc. (NPCE) at the month-end close of 2021-04 would be worth $606 at the close of 2026-08 — -39.4% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $1,843.

$1,000 since 2021$606Total return-39.4%Multiple0.61×CAGR-9.0%

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$606Gain+$-394 (-39.4%)Multiple0.6×CAGR-9.0%

    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.

    2021$6062022$1,4522023$9,8262024$1,4202025$1,3082026$948

    Every year, $1,000 from 2021

    YearValue of $1,000Year return
    2021$1,000
    2022$148-85.2%
    2023$1,023+591.9%
    2024$1,110+8.5%
    2025$1,532+38.0%
    2026$1,452-5.2%

    Best and worst month-end to buy

    The best single month-end close to have bought NPCE was 2022-12 ($1.49): $1,000 then is $9,826 today. The worst was 2021-04 ($24.16): $1,000 then is $606.

    FAQ

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

    A $1,000 investment in Neuropace, Inc. (NPCE) at the start of 2021 would be worth about $606 today, a total return of -39.4%. Dividends are reinvested in these figures.

    What were the best and worst years for NPCE?

    Neuropace, Inc. (NPCE)'s strongest calendar year since 2021 was 2023, a +591.9% return — $1,000 held through that year became about $6,919 by year-end. Its weakest year was 2022, at -85.2%.

    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 NPCE have grown?

    Investing $100 at the end of every month since 2021-04 would have grown to about $12,673 on $6,500 invested.

    Did NPCE beat the S&P 500?

    Over the same period, $1,000 in the S&P 500 index would be worth $1,843. NPCE trailed the S&P 500 by +67.1% 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

    Neuropace, Inc. (NPCE) historical total-return data from 2021-04 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.