What if you'd held SIGA?
A $1,000 investment in SIGA Technologies Inc. (SIGA) at the month-end close of 1997-09 would be worth $893 at the close of 2026-08 — -10.7% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $8,137.
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 | $311 | -68.9% |
| 1999 | $351 | +13.1% |
| 2000 | $683 | +94.2% |
| 2001 | $627 | -8.1% |
| 2002 | $309 | -50.7% |
| 2003 | $495 | +60.2% |
| 2004 | $359 | -27.5% |
| 2005 | $205 | -42.8% |
| 2006 | $811 | +295.0% |
| 2007 | $666 | -17.9% |
| 2008 | $707 | +6.2% |
| 2009 | $1,254 | +77.4% |
| 2010 | $3,027 | +141.4% |
| 2011 | $545 | -82.0% |
| 2012 | $566 | +4.0% |
| 2013 | $707 | +24.8% |
| 2014 | $311 | -55.9% |
| 2015 | $90.79 | -70.8% |
| 2016 | $623 | +586.0% |
| 2017 | $1,049 | +68.4% |
| 2018 | $1,708 | +62.9% |
| 2019 | $1,031 | -39.6% |
| 2020 | $1,572 | +52.4% |
| 2021 | $1,626 | +3.4% |
| 2022 | $1,694 | +4.2% |
| 2023 | $1,395 | -17.6% |
| 2024 | $1,607 | +15.2% |
| 2025 | $1,804 | +12.3% |
| 2026 | $1,038 | -42.5% |
Best and worst month-end to buy
The best single month-end close to have bought SIGA was 2015-12 ($0.27): $1,000 then is $11,434 today. The worst was 2022-07 ($11.85): $1,000 then is $262.
FAQ
What would $1,000 in SIGA be worth today?
A $1,000 investment in SIGA Technologies Inc. (SIGA) at the start of 1997 would be worth about $893 today, a total return of -10.7%. Dividends are reinvested in these figures.
What were the best and worst years for SIGA?
SIGA Technologies Inc. (SIGA)'s strongest calendar year since 1997 was 2016, a +586.0% return — $1,000 held through that year became about $6,860 by year-end. Its weakest year was 2011, at -82.0%.
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 SIGA have grown?
Investing $100 at the end of every month since 1997-09 would have grown to about $63,835 on $34,800 invested.
Did SIGA beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $8,137. SIGA trailed the S&P 500 by +89.0% 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
SIGA Technologies Inc. (SIGA) historical total-return data from 1997-09 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.