What if you'd held MNKD?
A $1,000 investment in MannKind Corporation (MNKD) at the month-end close of 2004-07 would be worth $57.39 at the close of 2026-09 — -94.3% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $10,657.
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 2004
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2004 | $1,000 | — |
| 2005 | $715 | -28.5% |
| 2006 | $1,047 | +46.4% |
| 2007 | $505 | -51.7% |
| 2008 | $218 | -56.9% |
| 2009 | $556 | +155.4% |
| 2010 | $512 | -8.0% |
| 2011 | $159 | -69.0% |
| 2012 | $147 | -7.6% |
| 2013 | $330 | +125.1% |
| 2014 | $331 | +0.4% |
| 2015 | $92.06 | -72.2% |
| 2016 | $40.63 | -55.9% |
| 2017 | $29.46 | -27.5% |
| 2018 | $13.46 | -54.3% |
| 2019 | $16.38 | +21.7% |
| 2020 | $39.75 | +142.6% |
| 2021 | $55.49 | +39.6% |
| 2022 | $66.92 | +20.6% |
| 2023 | $46.22 | -30.9% |
| 2024 | $81.65 | +76.6% |
| 2025 | $72.00 | -11.8% |
| 2026 | $51.56 | -28.4% |
Best and worst month-end to buy
The best single month-end close to have bought MNKD was 2017-04 ($0.87): $1,000 then is $4,667 today. The worst was 2006-06 ($107): $1,000 then is $38.10.
FAQ
What would $1,000 in MNKD be worth today?
A $1,000 investment in MannKind Corporation (MNKD) at the start of 2004 would be worth about $57.39 today, a total return of -94.3%. Dividends are reinvested in these figures.
What were the best and worst years for MNKD?
MannKind Corporation (MNKD)'s strongest calendar year since 2004 was 2009, a +155.4% return — $1,000 held through that year became about $2,554 by year-end. Its weakest year was 2015, at -72.2%.
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 MNKD have grown?
Investing $100 at the end of every month since 2004-07 would have grown to about $22,190 on $26,700 invested.
Did MNKD 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 $10,657. MNKD trailed the S&P 500 by +99.5% 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
MannKind Corporation (MNKD) historical total-return data from 2004-07 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.