What if you'd held AI?
A $1,000 investment in C3.ai, Inc. Class A (AI) at the month-end close of 2020-12 would be worth $75.39 at the close of 2026-09 — -92.5% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $2,229.
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 2026-09, dividends included.
Every year, $1,000 from 2020
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2020 | $1,000 | — |
| 2021 | $225 | -77.5% |
| 2022 | $80.65 | -64.2% |
| 2023 | $207 | +156.6% |
| 2024 | $248 | +19.9% |
| 2025 | $97.15 | -60.8% |
| 2026 | $75.39 | -22.4% |
Best and worst month-end to buy
The best single month-end close to have bought AI was 2026-02 ($7.95): $1,000 then is $1,316 today. The worst was 2021-01 ($140): $1,000 then is $74.93.
FAQ
What would $1,000 in AI be worth today?
A $1,000 investment in C3.ai, Inc. Class A (AI) at the start of 2020 would be worth about $75.39 today, a total return of -92.5%. Dividends are reinvested in these figures.
What were the best and worst years for AI?
C3.ai, Inc. Class A (AI)'s strongest calendar year since 2020 was 2023, a +156.6% return — $1,000 held through that year became about $2,566 by year-end. Its weakest year was 2021, at -77.5%.
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 AI have grown?
Investing $100 at the end of every month since 2020-12 would have grown to about $3,536 on $7,000 invested.
Did AI 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 $2,229. AI trailed the S&P 500 by +96.6% 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
C3.ai, Inc. Class A (AI) historical total-return data from 2020-12 to 2026-09, 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 2026-09-04. Not financial advice.