GammaWins Calculator – Complete Feature Overview
Market data and coverage
- US equity and index options (full OPRA coverage)
- Swedish, Danish and Norwegian equity and index options (Nasdaq Nordics)
- 15-minute delayed market data
- Bid, mid and ask prices for all option legs
- Manual option price overrides
- Historical option prices with more than 3 years of US intraday history (5- or 10-minute granularity) (Calculator Pro)
Volatility analysis
- Interactive volatility skew and term structure charts (Calculator Pro)
- Drag strikes and expiries directly on skew and term structure charts (Calculator Pro)
- One-year historical ranges for volatility skew and term structure (Calculator Pro)
- 30-day realized volatility (RV)
- At-the-money implied volatility (ATM IV)
- Model-free implied volatility
- IV and RV rank and percentile
Volatility modeling
- Adjust implied volatility for the entire strategy
- Adjust implied volatility by expiry
- Adjust implied volatility per option leg
- Leg-level modeled IV display
Strategy construction
- Presets for 30 common option strategies
- Fully custom strategies with any number of legs and expiries
- Fast iteration on strikes, expiries and quantities
- Select strikes by price or delta
- Strike delta displayed while selecting contracts
- Option chain with Greeks
- Per-leg hide/show controls
Scenario analysis
- P/L, portfolio value, % return or any Greek as chart metrics
- Price as X-axis or Time as X-axis
- Compare multiple dates on the same chart (Calculator Pro)
- Compare multiple underlying prices on the same chart (Calculator Pro)
- Distinct line styles for multi-date and multi-price charts (Calculator Pro)
- Adaptive date slider with minute precision for short-dated options
- Adaptive price ranges based on time to expiry and implied volatility
- Drag-to-zoom and adjustable visible chart range
- Show or hide summary metrics
Table analysis
- Analyze P/L, portfolio value, % return or any Greek in a two-dimensional table
- Customizable time and price ranges
- Custom table granularity
- Color-coded values for faster analysis
Strategy metrics
- Entry debit/credit
- Maximum profit and loss
- Probability of profit
- Return on risk
- Breakevens
- Spread
- Net Greeks (Delta, Gamma, Theta, Vega, Rho)
- Intrinsic and extrinsic value
- Annualized premium yield
- CAGR
Scenarios and workflow
- Save scenarios locally without an account
- Cross-device scenario synchronization with an account
- Automatic migration of locally saved scenarios after signup
- Saved scenarios refresh to current market prices
- Share complete calculator workspaces using short links
- Shared links preserve market prices and chart configuration
Customization
- Default option price (Mid or Bid/Ask)
- Strike matching by strike or delta when changing expiry
- Default underlying
- Default chart settings
- Default table settings
- Keyboard support on all sliders (Arrow keys, Page Up/Down, Home, End)
- Larger slider interaction areas for easier adjustment
