Compared honestly
Webull backtesting with Level2 and Replay Mode, and an alternative that tests 20+ years
Webull now has automated backtesting through Level2, the no-code strategy builder embedded in Webull since January 2026, but Level2 lists a limit of 180 days of historical data on 3 to 60 minute bars. Replay Mode is manual and paper trading runs forward. None of them tests a rule across a 2008 or a 2020. AgentTrading does exactly that.
- 1 THESIS
- 2 EVIDENCE
- 3 BACKTEST
- 4 RISK
- 5 VERDICT
02 EVIDENCE · FUNDAMENTALS
04 RISK · IN PLAIN ENGLISH
Sample scenarios, not a live backtest of what you typed. Past performance does not guarantee future results. Educational analysis only, not financial advice.
Credit where due - what Webull does well
- ✓ Commission-free stock, ETF, and options trading with a strong desktop and mobile platform
- ✓ High-fidelity paper trading with a $100,000 virtual account that mirrors live execution
- ✓ Replay Mode for bar-by-bar visual practice and, since 2026, Level2 no-code strategy automation
The honest comparison
Webull has become a serious platform for active traders: commission-free stocks, ETFs, and options, a polished desktop and mobile experience, high-fidelity paper trading with a $100,000 virtual account, and, since early 2026, Level2 no-code strategy automation built right in. That is a lot of tooling, and it is easy to assume backtesting is in there somewhere. Since January 13, 2026 it partly is: Level2 runs automated backtests inside Webull, but its own pricing page lists "Backtest up to 180 Days of Historical Market Data" on 3-minute to 60-minute bars, on its Free, $19.99 and $49.99 a month plans alike. Six months of intraday bars is enough to check a day-trading rule against recent conditions and nowhere near enough to see a bear market. Webull's Replay Mode replays historical price action bar by bar so you can practice entries and exits by hand, but it is a manual, visual drill, limited to line charts, and it does not run a defined rule automatically across years of data. Paper trading tests a strategy forward from today in real time, which builds discipline but reveals nothing about how a rule behaved through 2008 or 2020. And Level2's 180-day window never reaches a 2008, a 2020 or a 2022. So the question "did this rule actually work over the last 20 years, after costs" is one Webull cannot answer. AgentTrading answers exactly that, and it is not a broker. Type the thesis in plain English, it restates the rule, backtests it on 20+ years of split- and dividend-adjusted daily data with a 0.1% cost per trade assumed by default, explains the risks in words, and stamps an honest verdict: HELD UP, MIXED, or UNDERPERFORMED, even when the idea loses to buy-and-hold. The two tools sit at different stations. Vet the idea on AgentTrading from $49 per month, then place the trade at Webull where the execution and paper trading are genuinely good. It is educational analysis only, never advice, and the decision stays yours.
Past performance does not guarantee future results. For educational and informational purposes only. Not financial advice. Consult a licensed advisor.
SIDE BY SIDE
AgentTrading vs Webull
| What matters | AgentTrading | Webull |
|---|---|---|
| Backtest a stock rule automatically across 20+ years | Yes | Level2 backtests up to 180 days of intraday bars |
| Plain-English thesis to backtest in one pass | Yes | No |
| Tests backward on real history, not forward or bar-by-bar | Yes | Replay is bar-by-bar; paper trading is forward |
| Honest verdict including UNDERPERFORMED | Yes | No |
| Places live trades, commission-free brokerage | Not a broker, by design | Yes |
| Paper trading and no-code automation (Level2) | Focused on the historical test | Yes |
| Price | From $49/mo | Free platform, you fund the account |
Comparison reflects general product positioning and public pricing, offered in good faith. Verify current capabilities with each vendor.
On the same bench
The plain-sentence workflow is laid out on backtesting software, and the trading strategy tester shows how a sentence becomes the rule card the test runs on. Because Replay Mode and paper trading are so often confused with testing, does Webull have backtesting walks through each Webull tool, and how to backtest a trading strategy covers what a real historical test needs. Plans start at $49 a month.
QUESTIONS - ASKED AND ANSWERED
Common questions about Webull alternatives
Does Webull have backtesting?
Yes, through Level2, a no-code strategy builder embedded in Webull for US traders since January 2026. Level2 lists backtests on up to 180 days of historical data using 3-minute to 60-minute bars. Webull also has Replay Mode for manual bar-by-bar practice and paper trading that runs forward. None of them tests a rule across decades of daily history.
How far back can you backtest on Webull?
About six months. Level2, the strategy builder inside Webull, states "Backtest up to 180 Days of Historical Market Data" on every plan it lists, Free, Pro at $19.99 a month and Elite at $49.99 a month, on 3-minute to 60-minute timeframes. To see how a rule behaved in 2008, 2020 or 2022, you need daily data going back 20 years or more.
Can you backtest a strategy on Webull?
Yes, for recent intraday history. Build the rule in Level2 inside Webull and it backtests on up to 180 days of 3 to 60 minute bars, which suits a day-trading rule. Replay Mode lets you step through past charts by hand. To run a swing or position rule across 20+ years of adjusted daily data with costs included, use a dedicated bench, then place the trades at Webull.
What is Webull Replay Mode?
Replay Mode is a Webull chart feature that replays a stock's historical price action bar by bar so you can rehearse entries and exits as if the day were unfolding live. It is useful for practicing execution and reading price, but it is manual and visual, limited to line charts, and does not test a defined rule automatically across many years, which is what backtesting means.
Is Webull paper trading the same as backtesting?
No. Paper trading runs a strategy forward from today with virtual money, so it tests your discipline in current markets. Backtesting runs a defined rule backward across real historical data to measure what already happened, including the worst drawdowns. Both are useful, but they answer opposite questions, and a forward simulation cannot tell you how a rule held up in past bull and bear markets.
How is Webull different from AgentTrading?
Webull is a commission-free broker with manual Replay Mode, forward paper trading, and Level2 no-code automation with backtests on up to 180 days of intraday data. AgentTrading is a research bench that executes nothing; you type one thesis in plain English, it backtests it on 20+ years of adjusted data, prints every assumption, and stamps an honest verdict including UNDERPERFORMED. You vet the idea on one and place the trade on the other.
Past performance does not guarantee future results. For educational and informational purposes only. Not financial advice. Consult a licensed advisor.
Other comparisons
All alternativesTest the next idea before you pay for another month
Type a thesis or a ticker. AgentTrading restates the rule, runs 20+ years of adjusted history, explains the risks, and stamps an honest verdict. Plans from $49 per month.
Past performance does not guarantee future results. For educational and informational purposes only. Not financial advice. Consult a licensed advisor.