# Features — GammaForce Matrix

## Real-Time GEX Dashboard

Live Gamma Exposure distribution for SPX and SPY, updated every minute during US market hours.

- **GEX bar chart**: Green = positive gamma (stabilizing), Red = negative gamma (amplifying)
- **Automatic symbol switching**: Toggle between SPX and SPY with one click
- **Live K-line overlay**: Real-time price chart with key gamma levels plotted as horizontal lines

**Who benefits**: 0DTE options traders who need intraday gamma awareness to time entries and exits. Also useful for swing traders analyzing daily GEX regime shifts.

**Use case**: Before entering a 0DTE iron condor on SPX, check if Total GEX is positive (favorable for premium selling) and identify Call Wall resistance and Put Wall support as your strike selection guide.

## Key Gamma Levels

Proprietary indicators calculated from live options open interest and gamma values:

| Level | Type | Trading Significance |
|-------|------|---------------------|
| Total GEX | Regime | +GEX = sell premium, -GEX = buy premium |
| Call Wall | Resistance | Highest call gamma strike — dealer selling pressure above |
| Put Wall | Support | Highest put gamma strike — dealer buying pressure below |
| Gamma Flip | Threshold | Above = mean-reversion; Below = trend-following |
| Max Pain | Target | Most likely closing price on +GEX days |
| Call Center | Breakout | GEX distribution median — break above = bullish |
| Put Center | Breakdown | GEX distribution median — far below spot = bearish |
| Put/Call OI | Sentiment | >0.68 bearish, <0.66 bullish |
| HVL | Volume | Highest options volume price level |

## GEX Historical Replay

Review the past 7 trading days of GEX evolution:

- 5-minute interval snapshots
- Interactive timeline with play/pause controls
- Watch how key levels shifted relative to price action
- Essential for post-market review and strategy refinement
- **Pro members only**

## Options Calculator

Full-featured Black-Scholes calculator:

- **Single-leg pricing**: Call/Put with all Greeks (Delta, Gamma, Theta, Vega, Vanna, Charm)
- **Multi-leg strategies**: Build and analyze any combination — spreads, straddles, condors, butterflies
- **P&L visualization**: Interactive chart showing profit/loss across underlying prices
- **Simulation sliders**:
  - *Time Remaining*: Simulate theta decay from now to expiry
  - *IV Change*: Model IV crush or expansion (-50% to +100%)
- **Breakeven calculation**: Automatic identification of breakeven prices
- **Implied volatility solver**: Reverse-engineer IV from market price

## Smart Strategy Engine

AI-powered recommendations based on current market conditions:

- Detects GEX regime (+/-) and price position relative to key levels
- Suggests specific strategy structures with example strikes
- Adapts between seller strategies (+GEX) and buyer strategies (-GEX)
- Considers entry timing: morning favors buyers, afternoon favors sellers

**Who benefits**: Traders who want actionable trade ideas without spending hours on manual gamma analysis. Beginners who are learning how GEX translates to strategy selection.

**Use case**: The engine detects -GEX with price near Put Wall → suggests Bull Put Spread with specific strikes, helping you capitalize on support bounce in a volatile regime.

## Vanna & Charm Heatmap

Second-order Greeks visualization:

- **Vanna heatmap**: Delta sensitivity to IV — critical around catalysts (earnings, FOMC)
- **Charm heatmap**: Delta sensitivity to time — accelerates near expiry
- Cross-strike, cross-expiration view shows dealer hedging flow hotspots

## Additional Capabilities

- **IV Smile**: Visualize implied volatility across strikes for selected expirations
- **VIX Term Structure**: Monitor VIX futures curve for contango/backwardation signals
- **WebSocket Streaming**: Real-time data push — no manual refresh needed
- **Mobile Responsive**: Full functionality on phones and tablets
- **Multi-language**: English and Chinese (中文) interface with one-click toggle
- **Multi-device**: Support 2-5 concurrent sessions depending on subscription tier

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