ThetaForge

One Nonstop Engineer

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About this app

ThetaForge helps you model, visualize, and understand options strategies in a visual, educational environment.

Build single-leg and multi-leg options structures, explore payoff behavior, adjust volatility assumptions, and test theoretical scenarios across price and time. Whether you are learning options mechanics or comparing complex strategy shapes, ThetaForge gives you a clear way to understand breakevens, defined risk, payoff behavior, and model-based outcomes.

ThetaForge is designed as an educational strategy modeling tool — not a brokerage, signal service, or financial advisor.

What you can do with ThetaForge

Create and analyze options strategies including calls, puts, spreads, covered positions, and multi-leg structures.

Visualize strategy payoff across a range of underlying prices.

Explore breakevens, max profit, max loss, and risk-defined behavior.

Adjust volatility assumptions to see how theoretical values may change.

Model scenarios across price movement, time, and implied volatility.

Compare strategy behavior before expiration and at expiration.

Use strategy templates and guided explanations to better understand common options structures.

Review neutral, risk-focused explanations that explain mechanics without telling you what to trade.

Built for options learners and strategy builders

ThetaForge is for people who want to understand how options strategies behave. It can help you explore questions like:

How does this spread behave if the underlying moves up or down?

Where are the breakeven points?

How much risk is defined upfront?

How does volatility affect the theoretical value of the position?

What happens as time passes?

How do multiple legs interact inside one strategy?

Educational, visual, and privacy-conscious

ThetaForge focuses on strategy modeling and theoretical analysis. It does not connect to brokerages, place trades, provide trade signals, or provide personalized investment recommendations. It is built to help you explore mechanics, structure, payoff, and risk in a clearer way.

Important disclaimer

ThetaForge is provided for educational and informational purposes only. It does not provide financial, investment, trading, tax, or legal advice. Options involve risk and are not suitable for all investors. Theoretical outputs, models, and scenarios are estimates only and may differ from real market prices, fills, liquidity, assignment behavior, taxes, fees, and other real-world outcomes. Always do your own research and consult a qualified financial professional before making financial decisions.

What’s new

Version 1.0.0+6
- Fixed synthetic option chain generation to construct 50+ expirations as expected based on chain filters.
- Fixed a tablet-mode chain screen issue where call-side buy and sell taps could trigger incorrectly.