What if you'd held TDG?
A $1,000 investment in Transdigm Group Incorporated (TDG) at the month-end close of 2006-03 would be worth $130,793 at the close of 2026-08 — +12979.3% total return, dividends reinvested. The same $1,000 in the S&P 500 would be worth $5,953.
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 2006
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2006 | $1,000 | — |
| 2007 | $1,704 | +70.4% |
| 2008 | $1,266 | -25.7% |
| 2009 | $2,117 | +67.3% |
| 2010 | $3,211 | +51.6% |
| 2011 | $4,266 | +32.9% |
| 2012 | $6,660 | +56.1% |
| 2013 | $9,111 | +36.8% |
| 2014 | $12,742 | +39.9% |
| 2015 | $14,826 | +16.3% |
| 2016 | $17,661 | +19.1% |
| 2017 | $21,166 | +19.8% |
| 2018 | $26,210 | +23.8% |
| 2019 | $48,332 | +84.4% |
| 2020 | $53,411 | +10.5% |
| 2021 | $54,916 | +2.8% |
| 2022 | $55,890 | +1.8% |
| 2023 | $93,093 | +66.6% |
| 2024 | $123,131 | +32.3% |
| 2025 | $138,094 | +12.2% |
| 2026 | $126,990 | -8.0% |
Best and worst month-end to buy
The best single month-end close to have bought TDG was 2006-08 ($8.22): $1,000 then is $148,773 today. The worst was 2025-07 ($1,505): $1,000 then is $813.
FAQ
What would $1,000 in TDG be worth today?
A $1,000 investment in Transdigm Group Incorporated (TDG) at the start of 2006 would be worth about $130,793 today, a total return of +12979.3%. Dividends are reinvested in these figures.
What were the best and worst years for TDG?
Transdigm Group Incorporated (TDG)'s strongest calendar year since 2006 was 2019, a +84.4% return — $1,000 held through that year became about $1,844 by year-end. Its weakest year was 2008, at -25.7%.
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 TDG have grown?
Investing $100 at the end of every month since 2006-03 would have grown to about $662,228 on $24,600 invested.
Did TDG beat the S&P 500?
Over the same period, $1,000 in the S&P 500 index would be worth $5,953. TDG beat the S&P 500 by +2097.2% 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
Transdigm Group Incorporated (TDG) historical total-return data from 2006-03 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.