What if you'd held TTEK?
A $1,000 investment in Tetra Tech, Inc. (TTEK) at the month-end close of 1991-12 would be worth $100,549 at the close of 2026-08 — +9954.9% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $18,480.
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 1991
| Year | Value of $1,000 | Year return |
|---|---|---|
| 1991 | $1,000 | — |
| 1992 | $1,190 | +19.0% |
| 1993 | $2,033 | +70.9% |
| 1994 | $2,313 | +13.8% |
| 1995 | $3,706 | +60.2% |
| 1996 | $4,022 | +8.5% |
| 1997 | $5,091 | +26.6% |
| 1998 | $8,610 | +69.1% |
| 1999 | $6,115 | -29.0% |
| 2000 | $12,679 | +107.3% |
| 2001 | $9,898 | -21.9% |
| 2002 | $6,066 | -38.7% |
| 2003 | $12,360 | +103.8% |
| 2004 | $8,321 | -32.7% |
| 2005 | $7,791 | -6.4% |
| 2006 | $8,995 | +15.4% |
| 2007 | $10,690 | +18.8% |
| 2008 | $12,008 | +12.3% |
| 2009 | $13,508 | +12.5% |
| 2010 | $12,459 | -7.8% |
| 2011 | $10,734 | -13.8% |
| 2012 | $13,159 | +22.6% |
| 2013 | $13,912 | +5.7% |
| 2014 | $13,379 | -3.8% |
| 2015 | $13,195 | -1.4% |
| 2016 | $22,118 | +67.6% |
| 2017 | $24,898 | +12.6% |
| 2018 | $26,989 | +8.4% |
| 2019 | $45,277 | +67.8% |
| 2020 | $61,277 | +35.3% |
| 2021 | $90,363 | +47.5% |
| 2022 | $77,747 | -14.0% |
| 2023 | $89,986 | +15.7% |
| 2024 | $107,970 | +20.0% |
| 2025 | $91,563 | -15.2% |
| 2026 | $100,549 | +9.8% |
Best and worst month-end to buy
The best single month-end close to have bought TTEK was 1992-03 ($0.35): $1,000 then is $103,977 today. The worst was 2024-10 ($48.15): $1,000 then is $760.
FAQ
What would $1,000 in TTEK be worth today?
A $1,000 investment in Tetra Tech, Inc. (TTEK) at the start of 1991 would be worth about $100,549 today, a total return of +9954.9%. Dividends are reinvested in these figures.
What were the best and worst years for TTEK?
Tetra Tech, Inc. (TTEK)'s strongest calendar year since 1991 was 2000, a +107.3% return — $1,000 held through that year became about $2,073 by year-end. Its weakest year was 2002, at -38.7%.
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 TTEK have grown?
Investing $100 at the end of every month since 1991-12 would have grown to about $620,405 on $41,700 invested.
Did TTEK beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $18,480. TTEK beat the S&P 500 by +444.1% 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
Tetra Tech, Inc. (TTEK) historical total-return data from 1991-12 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.