What if you'd held PRLB?
A $1,000 investment in Proto Labs, Inc. (PRLB) at the month-end close of 2012-02 would be worth $2,648 at the close of 2026-09 — +164.8% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $7,351.
Your scenario
Result
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.
Every year, $1,000 from 2012
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2012 | $1,000 | — |
| 2013 | $1,806 | +80.6% |
| 2014 | $1,704 | -5.6% |
| 2015 | $1,616 | -5.2% |
| 2016 | $1,303 | -19.4% |
| 2017 | $2,613 | +100.6% |
| 2018 | $2,861 | +9.5% |
| 2019 | $2,576 | -10.0% |
| 2020 | $3,891 | +51.1% |
| 2021 | $1,303 | -66.5% |
| 2022 | $648 | -50.3% |
| 2023 | $988 | +52.6% |
| 2024 | $992 | +0.3% |
| 2025 | $1,283 | +29.4% |
| 2026 | $2,066 | +61.0% |
Best and worst month-end to buy
The best single month-end close to have bought PRLB was 2023-10 ($23.61): $1,000 then is $3,449 today. The worst was 2021-01 ($212): $1,000 then is $385.
FAQ
What would $1,000 in PRLB be worth today?
A $1,000 investment in Proto Labs, Inc. (PRLB) at the start of 2012 would be worth about $2,648 today, a total return of +164.8%. Dividends are reinvested in these figures.
What were the best and worst years for PRLB?
Proto Labs, Inc. (PRLB)'s strongest calendar year since 2012 was 2017, a +100.6% return — $1,000 held through that year became about $2,006 by year-end. Its weakest year was 2021, at -66.5%.
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 PRLB have grown?
Investing $100 at the end of every month since 2012-02 would have grown to about $25,897 on $17,600 invested.
Did PRLB 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 $7,351. PRLB trailed the S&P 500 by +64.0% 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
Proto Labs, Inc. (PRLB) historical total-return data from 2012-02 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.
What if you'd held…
Data: adjusted close prices via EODHD and Yahoo Finance. As of 2026-09-04. Not financial advice.