Innospec (IOSP) Total Return Calculator
$10,000 since Dec 2007, with and without reinvesting · data through Oct 2026
$10,000 invested in Innospec (IOSP) ten years ago, at the end of Oct 2016, was worth $19,045 at the end of Oct 2026 with every dividend reinvested: 6.7% a year, against $41,633 in the S&P 500. Since Dec 2007, $10,000 became $76,020 reinvested (11.4% a year), or $68,133 taking the dividends as cash, $9,922 of it paid out along the way.
IOSP became
$76,020
S&P 500: $72,756
Return a year
11.4%
S&P 500: 11.1%
Payouts reinvested
$11,659
bought more shares
Worst drop
-84.4%
S&P 500: -48.2%
$10,000, Dec 2007 to Oct 2026
Payouts reinvested · S&P 500 reinvested
| Year | IOSP total return | Paid out | S&P 500 |
|---|---|---|---|
| 2026 (part) | +32.0% | $737 | +11.7% |
| 2025 | −28.9% | $1,291 | +17.7% |
| 2024 | −9.6% | $1,139 | +24.9% |
| 2023 | +21.5% | $987 | +26.2% |
| 2022 | +15.2% | $927 | −18.2% |
| 2021 | +0.8% | $773 | +28.7% |
| 2020 | −11.0% | $803 | +18.3% |
| 2019 | +69.4% | $716 | +31.2% |
| 2018 | −11.5% | $615 | −4.6% |
| 2017 | +4.3% | $547 | +21.7% |
| 2016 | +27.7% | $485 | +12.0% |
| 2015 | +28.7% | $405 | +1.2% |
| 2014 | −6.4% | $355 | +13.5% |
| 2013 | +35.5% | $358 | +32.3% |
| 2012 | +31.0% | $1,367 | +16.0% |
| 2011 | +37.6% | $16 | +1.9% |
| 2010 | +102.2% | $17 | +15.1% |
| 2009 | +74.0% | $48 | +26.4% |
| 2008 | −65.4% | $74 | −36.8% |
"Paid out" is what your holding received that year. Month-end prices; no costs or taxes.
Key facts: IOSP total return
Data as of · Source: SmarterDividends data
- $10,000 invested in Innospec (IOSP) at the end of Dec 2007, with dividends reinvested, was worth $76,020 at the end of Oct 2026: 11.4% a year, against $72,756 (11.1% a year) in the S&P 500.
- Over the 10 years to Oct 2026, IOSP turned $10,000 into $19,045 with dividends reinvested, 6.7% a year.
- Over the 5 years to Oct 2026, IOSP returned 3.6% a year with dividends reinvested (S&P 500: 12.0%).
- Taking IOSP's dividends as cash instead of reinvesting them, the same $10,000 ended at $68,133, including $9,922 of cash received; reinvesting added $7,887.
- IOSP's best calendar year in that time was 2010 (102.2%) and its worst 2008 (-65.4%), with dividends reinvested.
Cite this page
SmarterDividends, "Innospec (IOSP) Total Return Calculator," updated Nov 6, 2026, https://smarterdividends.com/stocks/IOSP/total-return
IOSP total return questions
If I invested $10,000 in IOSP 10 years ago, how much would I have?
About $19,045 at the end of Oct 2026, with every dividend reinvested: 6.7% a year. Taking them as cash, you'd have shares worth $16,579 or so plus the cash you received. The same $10,000 in the S&P 500 became $41,633.
What is IOSP's total return since Dec 2007?
660% in total, or 11.4% a year, through Oct 2026 with dividends reinvested. The share price alone rose 482%.
How much of IOSP's return came from dividends?
About 14% of its yearly return since Dec 2007. Reinvesting them, rather than taking cash, left you $7,887 better off on a $10,000 start.
What was IOSP's worst year?
2008, at -65.4% with dividends reinvested (S&P 500: -36.8%). Its deepest fall from a peak, on month-end values, was -84.4%.
How is total return calculated here?
From month-end prices: the adjusted price counts every dividend reinvested in the month it was paid; the plain price doesn't. The S&P 500 is SPY with its dividends reinvested. No trading costs or taxes.