# Anchor Points, Defense Lines, and GEX Flip Points

> A deep dive on the three key levels that drive price behavior in the GEX heatmap.

Source: https://tradeecho.com/docs/features/dealeredge/anchor-points-defense-lines (updated 2026-08-01)

A deep dive on the three key levels that drive price behavior in the GEX heatmap.

> **Tip: Full workflow**
>
> **Direction** comes from **price vs Anchor**. **GEX Rating** is day type (stable vs volatile), not direction. Add **Charm** for time pressure and **Pulse** for chart execution - see [Charm + Pulse Workflow](https://tradeecho.com/docs/features/dealeredge/dealeredge-charm-pulse-workflow).

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## Anchor Point

### What It Is

The **Anchor Point** is the brightest tile on the heatmap - the strike with the highest gamma exposure. It is the strongest magnet for price.

### Why It Matters

- Dealers have the most hedging pressure at this level
- Price gravitates toward the anchor as market makers buy below and sell above
- The anchor acts as a gravitational center for intraday and short-term price action

### How Price Behaves at the Anchor

- **Price below anchor:** Dealers buy to hedge - creates upward pressure (support)
- **Price above anchor:** Dealers sell to hedge - creates downward pressure (resistance)
- **Price at anchor:** Equilibrium - price tends to pin or oscillate around this level

### How to Trade Around the Anchor

- **Price approaching from below:** Consider calls or bull spreads targeting the anchor
- **Price approaching from above:** Consider puts or bear spreads targeting the anchor
- **Price at anchor:** Sell premium (iron condors, strangles) - range-bound environment
- **Price breaking through anchor:** Momentum play - follow the break with defined risk

### When the Anchor Changes

The anchor shifts as:

- Options expire (OpEx, monthly, weekly)
- New options are written at different strikes
- Open interest changes significantly
- Major market events alter dealer positioning

**Best practice:** Re-check the anchor daily. It typically updates overnight as new data flows in.

---

## Defense Lines

### What They Are

**Defense Lines** are secondary high-GEX strikes - typically 60-80% of the anchor's strength. They act as backup support and resistance levels.

### Why They Matter

- If price breaks through the anchor, defense lines become the next key levels
- They define the range boundaries when price is pinned
- Multiple defense lines create a "zone" of support or resistance rather than a single level

### How Price Behaves at Defense Lines

- **As support:** Price may bounce when approaching from above
- **As resistance:** Price may reject when approaching from below
- **Weaker than anchor:** Breaks are more likely than at the anchor, but still significant

### How to Trade Around Defense Lines

- **Place stops:** Set stops beyond the next defense line (not right at it - avoid stop hunts)
- **Target levels:** Use defense lines as secondary profit targets
- **Range definition:** In neutral (3/5) environments, sell iron condors between defense lines
- **Breakout confirmation:** Wait for a clean break of the defense line before entering momentum trades

### Visual Explanation

```
Price
  ^
  |     [Resistance Zone - Defense Line]
  |     --------------------------------
  |     
  |     [ANCHOR POINT - Brightest Tile]
  |     ================================
  |     
  |     [Support Zone - Defense Line]
  |     --------------------------------
  v
       Strike
```

---

## GEX Flip Point

### What It Is

The **GEX Flip Point** is where gamma changes sign. Above this level, gamma is positive (stabilizing). Below it, gamma is negative (destabilizing).

### Why It Matters

- **Above flip:** Price is stable, range-bound, predictable - ideal for selling premium
- **Below flip:** Price is volatile, explosive, unpredictable - ideal for buying premium or avoiding

### How Price Behaves at the Flip Point

- **Above flip:** Dealers buy on dips and sell on rips - dampens volatility
- **Below flip:** Dealers sell on dips and buy on rips - amplifies volatility
- **At flip:** Transition zone - behavior can be choppy

### How to Trade Around the Flip Point

- **Above flip:** Iron condors, calendars, butterflies, credit spreads
- **Below flip:** Long calls, long puts, directional spreads - avoid selling naked premium
- **Crossing the flip:** If price breaks below flip, switch from premium selling to directional buying (or stay flat)

### When the Flip Point Changes

- Shifts with expiration cycles
- Moves as dealer positioning changes
- Can be steep (sharp transition) or gradual (wide zone) depending on the gamma distribution

---

## Summary: Trading by Level

| Level | Role | Price Behavior | Best Strategy |
|-------|------|----------------|---------------|
| **Anchor** | Primary magnet | Strongest support/resistance | Direction and range definition |
| **Defense Lines** | Backup levels | Secondary support/resistance | Stops, targets, range boundaries |
| **GEX Flip Point** | Volatility threshold | Above = stable, below = volatile | Strategy selection (sell vs buy premium) |

---

## Quick Checklist

- [ ] Identify the anchor (brightest tile)
- [ ] Note defense lines (secondary bright tiles)
- [ ] Locate the GEX flip point (green-to-red transition)
- [ ] Compare current price to all three levels
- [ ] Choose strategy based on position relative to flip point
- [ ] Set stops beyond defense lines
- [ ] Re-check levels daily