What if you'd held JAZZ?
A $1,000 investment in Jazz Pharmaceuticals plc (JAZZ) at the month-end close of 2007-06 would be worth $15,760 at the close of 2026-08 — +1476.0% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,127.
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 2026-08, dividends included.
Every year, $1,000 from 2007
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2007 | $1,000 | — |
| 2008 | $131 | -86.9% |
| 2009 | $536 | +308.3% |
| 2010 | $1,339 | +149.7% |
| 2011 | $2,628 | +96.3% |
| 2012 | $3,622 | +37.8% |
| 2013 | $8,610 | +137.7% |
| 2014 | $11,138 | +29.4% |
| 2015 | $9,562 | -14.2% |
| 2016 | $7,417 | -22.4% |
| 2017 | $9,160 | +23.5% |
| 2018 | $8,433 | -7.9% |
| 2019 | $10,155 | +20.4% |
| 2020 | $11,228 | +10.6% |
| 2021 | $8,667 | -22.8% |
| 2022 | $10,837 | +25.0% |
| 2023 | $8,367 | -22.8% |
| 2024 | $8,378 | +0.1% |
| 2025 | $11,565 | +38.0% |
| 2026 | $17,154 | +48.3% |
Best and worst month-end to buy
The best single month-end close to have bought JAZZ was 2009-04 ($0.55): $1,000 then is $458,473 today. The worst was 2026-07 ($258): $1,000 then is $976.
FAQ
What would $1,000 in JAZZ be worth today?
A $1,000 investment in Jazz Pharmaceuticals plc (JAZZ) at the start of 2007 would be worth about $15,760 today, a total return of +1476.0%. Dividends are reinvested in these figures.
What were the best and worst years for JAZZ?
Jazz Pharmaceuticals plc (JAZZ)'s strongest calendar year since 2007 was 2009, a +308.3% return — $1,000 held through that year became about $4,083 by year-end. Its weakest year was 2008, at -86.9%.
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 JAZZ have grown?
Investing $100 at the end of every month since 2007-06 would have grown to about $343,938 on $23,100 invested.
Did JAZZ beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $5,127. JAZZ beat the S&P 500 by +207.4% 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
Jazz Pharmaceuticals plc (JAZZ) historical total-return data from 2007-06 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.
What if you'd held…
Data: adjusted close prices via Yahoo Finance. As of 2026-08. Not financial advice.