What if you'd held SIEB?
A $1,000 investment in Siebert Financial Corp. (SIEB) at the month-end close of 1980-03 would be worth $13,182 at the close of 2026-08 — +1218.2% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $75,502.
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 1980
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1980 | $1,000 | — |
| 1981 | $1,156 | +15.6% |
| 1982 | $1,206 | +4.3% |
| 1983 | $2,546 | +111.2% |
| 1984 | $2,454 | -3.6% |
| 1985 | $3,546 | +44.5% |
| 1986 | $3,184 | -10.2% |
| 1987 | $2,730 | -14.3% |
| 1988 | $3,227 | +18.2% |
| 1989 | $4,092 | +26.8% |
| 1990 | $2,745 | -32.9% |
| 1991 | $3,560 | +29.7% |
| 1992 | $4,106 | +15.3% |
| 1993 | $4,475 | +9.0% |
| 1994 | $4,184 | -6.5% |
| 1995 | $4,106 | -1.9% |
| 1996 | $12,943 | +215.2% |
| 1997 | $12,227 | -5.5% |
| 1998 | $51,482 | +321.1% |
| 1999 | $81,738 | +58.8% |
| 2000 | $22,979 | -71.9% |
| 2001 | $23,305 | +1.4% |
| 2002 | $12,241 | -47.5% |
| 2003 | $19,766 | +61.5% |
| 2004 | $21,624 | +9.4% |
| 2005 | $13,369 | -38.2% |
| 2006 | $22,383 | +67.4% |
| 2007 | $19,234 | -14.1% |
| 2008 | $11,752 | -38.9% |
| 2009 | $14,142 | +20.3% |
| 2010 | $10,525 | -25.6% |
| 2011 | $8,752 | -16.8% |
| 2012 | $10,220 | +16.8% |
| 2013 | $9,851 | -3.6% |
| 2014 | $13,468 | +36.7% |
| 2015 | $7,894 | -41.4% |
| 2016 | $21,135 | +167.7% |
| 2017 | $95,745 | +353.0% |
| 2018 | $102,553 | +7.1% |
| 2019 | $61,348 | -40.2% |
| 2020 | $29,787 | -51.4% |
| 2021 | $16,454 | -44.8% |
| 2022 | $9,645 | -41.4% |
| 2023 | $11,915 | +23.5% |
| 2024 | $22,411 | +88.1% |
| 2025 | $24,894 | +11.1% |
| 2026 | $14,397 | -42.2% |
Best and worst month-end to buy
The best single month-end close to have bought SIEB was 1980-12 ($0.14): $1,000 then is $14,397 today. The worst was 1999-04 ($24.51): $1,000 then is $82.83.
FAQ
What would $1,000 in SIEB be worth today?
A $1,000 investment in Siebert Financial Corp. (SIEB) at the start of 1980 would be worth about $13,182 today, a total return of +1218.2%. Dividends are reinvested in these figures.
What were the best and worst years for SIEB?
Siebert Financial Corp. (SIEB)'s strongest calendar year since 1980 was 2017, a +353.0% return — $1,000 held through that year became about $4,530 by year-end. Its weakest year was 2000, at -71.9%.
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 SIEB have grown?
Investing $100 at the end of every month since 1980-03 would have grown to about $143,041 on $55,800 invested.
Did SIEB beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $75,502. SIEB trailed the S&P 500 by +82.5% 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
Siebert Financial Corp. (SIEB) historical total-return data from 1980-03 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.