Backtest it. Simulate it.
Then let it run.
Build multi-leg options strategies without code, test them across years of index history, replay any day minute by minute, and deploy pre-built algos to a paper-trading desk with account-level risk controls.
Morning Straddle Seller · 1Y equity (1 lot)
—Backtest engine
Multi-leg legs with ATM/ITM/OTM or closest-premium strikes, leg SL & targets, overall SL/target, trailing, DTE and weekday filters, slippage and charges.
Open backtest →Strategy builder & payoff
Click strikes off an option chain, see expiry and target-date payoff, breakevens, probability of profit and net Greeks.
Open builder →Option simulator
Replay any past session minute by minute. Trade from the chain, watch M2M move, and practise discretionary entries risk-free.
Open simulator →Algos & Algofolios
Pre-built rule-based strategies with objective, style and risk band on every card, plus bundled portfolios of algos.
Browse algos →Paper-trading dashboard
Deploy algos with a multiplier and watch positions, M2M and the activity log update through the session. Pause or exit any time.
Open dashboard →Layered risk controls
Leg-level SL, strategy-level SL/target/trailing, and an account-level daily loss limit with a one-click kill switch.
See controls →Build
Start from a template or an algo, or assemble legs by hand.
Backtest
Check P&L, drawdown, win rate and month-by-month returns.
Rehearse
Replay sessions in the simulator to feel how it trades intraday.
Deploy
Set capital, stop-loss and targets, then run it on the paper desk.
Backtest
Intraday options strategy backtest on simulated index history (Jan 2021 → today).
Instrument & period
Legs
Overall risk
0 = offStrategy Builder
Payoff, breakevens, probability of profit and Greeks for any multi-leg position.
Payoff
Positions
Summary
Option chain
Option Simulator
Replay a past session minute by minute and trade it like it's live.
Positions
Option chain
Order book
Algos
Pre-built, rule-based strategies. Review the objective and risk band, backtest it yourself, then deploy to the paper desk.
Metrics are from a 1-year backtest at 1× on this demo's simulated data, net of approximate charges. They are not real track records.
Live desk
Live option chain from your broker, with paper trading.
Not connected to a live feed
The Live desk needs the ThetaForge Live program running on your computer. Double-click start.bat (or start-mock.bat to try it without a broker) — it opens this site at http://127.0.0.1:8765 with live prices.
Paper positions
Option chain
Paper order book
Paper-trading desk
Deployed algos trade a simulated session. Start the session clock to begin.
Deployed algos
+ Deploy moreSession P&L
Account risk
ArmedWhen the account's combined M2M breaches either level, every algo is squared off and new entries are blocked for the session.
Activity log
Pricing
Sample plans for this demo. Swap in your own tiers before launch.
Explorer
Learn and test ideas
- 20 backtests / week
- Strategy builder & payoff
- Option simulator
- Browse all algos
Trader
PopularFor active options traders
- Unlimited backtests
- Paper-trade up to 5 algos
- Algofolios
- Trailing & account-level risk
- Trade log exports
Desk
Run a full book
- Everything in Trader
- Unlimited deployments
- Broker connection (coming soon)
- Priority support