What if you'd held OSIS?
A $1,000 investment in OSI Systems, Inc. (OSIS) at the month-end close of 1997-10 would be worth $15,895 at the close of 2026-08 — +1489.5% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $14,108.
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 1997
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1997 | $1,000 | — |
| 1998 | $704 | -29.6% |
| 1999 | $449 | -36.3% |
| 2000 | $500 | +11.5% |
| 2001 | $1,489 | +197.6% |
| 2002 | $1,386 | -6.9% |
| 2003 | $1,568 | +13.1% |
| 2004 | $1,854 | +18.2% |
| 2005 | $1,501 | -19.0% |
| 2006 | $1,709 | +13.8% |
| 2007 | $2,161 | +26.5% |
| 2008 | $1,131 | -47.7% |
| 2009 | $2,227 | +97.0% |
| 2010 | $2,968 | +33.3% |
| 2011 | $3,982 | +34.2% |
| 2012 | $5,228 | +31.3% |
| 2013 | $4,336 | -17.1% |
| 2014 | $5,777 | +33.3% |
| 2015 | $7,238 | +25.3% |
| 2016 | $6,214 | -14.1% |
| 2017 | $5,256 | -15.4% |
| 2018 | $5,984 | +13.9% |
| 2019 | $8,224 | +37.4% |
| 2020 | $7,610 | -7.5% |
| 2021 | $7,608 | -0.0% |
| 2022 | $6,491 | -14.7% |
| 2023 | $10,535 | +62.3% |
| 2024 | $13,668 | +29.7% |
| 2025 | $20,821 | +52.3% |
| 2026 | $16,869 | -19.0% |
Best and worst month-end to buy
The best single month-end close to have bought OSIS was 2001-03 ($3.19): $1,000 then is $64,777 today. The worst was 2026-04 ($287): $1,000 then is $720.
FAQ
What would $1,000 in OSIS be worth today?
A $1,000 investment in OSI Systems, Inc. (OSIS) at the start of 1997 would be worth about $15,895 today, a total return of +1489.5%. Dividends are reinvested in these figures.
What were the best and worst years for OSIS?
OSI Systems, Inc. (OSIS)'s strongest calendar year since 1997 was 2001, a +197.6% return — $1,000 held through that year became about $2,976 by year-end. Its weakest year was 2008, at -47.7%.
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 OSIS have grown?
Investing $100 at the end of every month since 1997-10 would have grown to about $319,749 on $34,700 invested.
Did OSIS 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 $14,108. OSIS beat the S&P 500 by +12.7% 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
OSI Systems, Inc. (OSIS) historical total-return data from 1997-10 to 2026-08, 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 2026-08. Not financial advice.