# Core Concepts

> The ideas behind reading a Heatseeker map: nodes, King and Gatekeeper nodes, midpoints, retests, rate of change and more.

> **Note:** Educational material, not financial advice. Nothing here is a recommendation to buy or sell any security. Options involve significant risk and are not suitable for every investor. Past behavior of any reading or setup does not guarantee future results.

### Nodes

**Heatseeker™** is built to reveal **dealer exposure** at each strike price and expiration.\
Each strike displays a **value** (positive or negative), and each value is represented by a **color**:

| Exposure Type | Color Range | Typical Behavior |
| --------------------- | -------------- | ----------------------------------- |
| **Positive Exposure** | Green → Yellow | Lower-volatility interaction |
| **Negative Exposure** | Blue → Purple | Higher-volatility, “wicky” movement |

#### Key Principle

The most important factor is **not** whether a node is positive or negative — nor its color.\
What truly matters is the **absolute value** of the node.

> The **larger** the absolute value, the **stronger** the pull it exerts on price.

#### How Price Interacts with Each Node

* **Positive Node →** Lower-volatility interaction; price tends to move **smoothly**, with fewer wicks or spikes.
* **Negative Node →** Higher-volatility interaction; price becomes **wicky** and more **violent**.\
  When price interacts with a **negative gamma node**, it can **overshoot** before reversing, which can catch traders on the wrong side of the move.

### Concept of Magnets

Every node on the Heatseeker map acts like a **magnet** in the market.\
Price is **attracted** to these zones due to dealer positioning — yet these same areas can also act as **walls** that repel price and create reversals.

#### Magnetic Behavior

* As price **moves farther away** from a high-value node → the **magnetic pull weakens**.
* As price **approaches** a high-value node → the **magnetic pull strengthens**.
* When price **directly interacts** with a node, a **deflection or repulsion** may occur — similar to when two positive ends of a magnet meet and push apart.

![Heatseeker map: Magnetic Behavior, Core Concepts](https://www.skylit.ai/docs/images/X4bu2hHk5ZrCTbxeAlGL.webp)

> Think of nodes as **dynamic magnets** — their influence grows as price converges and fades as it diverges.

### King Nodes

**King Nodes** are the **highest absolute value nodes** on the heatmap.\
They represent where **Market Makers (MMs)** hold the **greatest exposure** — and where price often **gravitates near expiration**.

![Heatseeker map: King Nodes, Core Concepts](https://www.skylit.ai/docs/images/sYf7AGHqoZ9tBlKG67oi.webp)

#### Key Characteristics

* There can be **multiple significant nodes** with large values.
* When multiple strong nodes exist, they can **pull in opposite directions**, creating **range-bound pinning** or **whipsaw movement**.

#### Price Behavior Around King Nodes

1. **Pin Jobs (Common near End of Day)**\
   MMs often pin price near the King Node late in the session.

   * Tight ranges form.
   * Traders often watch the **edges of the range**.

   ![Heatseeker map: Price Behavior Around King Nodes, Core Concepts](https://www.skylit.ai/docs/images/EpUMB66g2huxfsc33DQC.webp)
2. **Drives Away (Common early in the day)**\
   When price reaches the King Node **too early**, MMs may push it away.\
   Holding price there all session would require constant defense, so they often trigger an early **drive-off**.

![Heatseeker map: Price Behavior Around King Nodes, Core Concepts](https://www.skylit.ai/docs/images/MptX1Ms26wU8XycbxmoR.webp)

#### Margin of Interaction

King Nodes don’t always reject **to the exact cent**.\
Expect a **deflection margin** of roughly **5–10 points on SPX**.

> Note: In the example above, the rejection came about 5½ points from the King Node and still counts as a reaction to it.

### Gatekeeper Nodes

**Gatekeeper Nodes** act like **bouncers at the door of a nightclub** — they prevent price from easily reaching the King Node.

These nodes function as **deflection points** that can cause major directional shifts.

![Heatseeker map: Gatekeeper Nodes, Core Concepts](https://www.skylit.ai/docs/images/upwoGJossFLgTEYnyxpJ.webp)

#### Behavior

* If price **tests and fails** at a Gatekeeper Node → the map can **reshuffle**.
* **Reshuffles** often precede a **trend change** or **realignment** of where dealers aim to pin price.
* Gatekeeper rejections near the **start of the day** are a common place traders watch for reversals.

> After a rejection, the map often reshuffles, and the new layout shows where positioning is leaning next.

### Midpoints

**Midpoints** sit between the edges of a range. Direction there is the least clear, which makes them a poor spot for directional risk-to-reward.

* Option and spread sellers read midpoints differently from directional traders.

![Heatseeker map: Midpoints, Core Concepts](https://www.skylit.ai/docs/images/wbm7WmEhJLPQaSIyqlV9.webp)

#### Why Midpoints Are Dangerous

* Dealers are often comfortable in **range-bound** conditions.
* The **upper and lower ranges** are easily visible on the heatmap.
* When price is **in the middle of the range**, direction becomes **uncertain**.

From the middle of a range, the distance to either edge is similar, so the **risk-to-reward** is roughly **1:1** rather than asymmetric.

> ***What many traders watch instead: price approaching the edge of the range, where the risk is easier to define.***

![Heatseeker map: Why Midpoints Are Dangerous, Core Concepts](https://www.skylit.ai/docs/images/qNWj5uIKynTCaBRsOYTZ.webp)

### Price Delivery & Node Retests

When looking for **bounce plays** off a node, **context matters** — not all nodes retain influence forever.

#### Node Retest Strength

| Touch | Typical reaction | Notes |
| ------------------ | ----------------- | ---------------------------------------- |
| **First Touch** | Strongest | Fresh level; dealers tend to defend it hardest |
| **Second Touch** | Weaker | Often forms double tops/bottoms |
| **Third+ Touches** | Weakest | The level is less likely to hold |

If price has already been **delivered from** a node (touched and moved away), its **influence weakens**.\
Each additional test reduces the likelihood of a strong bounce.

![Heatseeker map: Node Retest Strength, Core Concepts](https://www.skylit.ai/docs/images/qLLoJh0AzFwuvTz4gtEM.webp)

* *Caption: ACN 240 node test, targeting upside nodes, from September 10th, 2025.*

> **Key Takeaway:**\
> **Untouched nodes** tend to react more strongly than ones that have already been tested.

### Price Delivery From a Node

When price bounces off a Gatekeeper node or King node, we don't always get reversion back to that specific node!

* A node that has been interacted with tends to have less influence over price action, because the node is no longer "fresh".
* A return to that node becomes less likely.

![Heatseeker map: Price Delivery From a Node, Core Concepts](https://www.skylit.ai/docs/images/peiie1TveeK5dwCLiqSs.webp)

***Key note: a node that has already been interacted with tends to matter less than a fresh one, which is why many traders focus on the freshest levels.***

### Price Delivery and Node Size

* If price gets a rejection (in a bearish scenario) or a bounce (in a bullish scenario) off a node, a few things may occur:

  * Gradual decrease of the node we were delivered from - in this case, the likelihood of a return back to the node in question becomes low probability.

    *PEP Price Delivery Case Study From October 15th, 2025 at 09:30am EST*

  ![Heatseeker map: Price Delivery and Node Size, Core Concepts](https://www.skylit.ai/docs/images/r723vFxiWf03PcgDdUV3.webp)

  * Increase of the node we were delivered from - higher likelihood of a reversion back to the node in question.

  *By keeping an eye on key nodes for rate of change, we can make inferences as to whether a reversion back to a deflection node is likely. Looking for increase in size of node gives us higher likelihood for price to return, whereas a decrease in node size gives us lower likelihood for reversion.*

### Power Hour Liquidations

In the last half hour before the close, some brokers **auto-liquidate** accounts that fail margin requirements.\
That can create **forced order flow** in highly liquid names like **SPX, SPY and QQQ**.

![Heatseeker map: Power Hour Liquidations, Core Concepts](https://www.skylit.ai/docs/images/ajXHoQmbL5aZabcIOmIk.webp)

#### Why It Matters

* Can trigger **volatility spikes** right before the close.
* Can **force breakouts or fakeouts** near Gatekeeper Nodes.
* Near a **King Node**, can **accelerate** the move.
* Sometimes reshuffles the entire map.

> Power Hour moves are often mechanical (forced selling) rather than a change in view.

### Rate of Change of a Node

Heatseeker™ not only shows **dealer positioning**, but also **how fast liquidity changes**.

#### Reading Node Momentum

* **Rapid Accumulation →** Dealers are quickly adding exposure; acts like a **magnet** that pulls price in strongly.
* **Rapid Unwinding →** Exposure vanishes; levels that looked strong may suddenly **weaken**.
* Fast changes often cause **volatility spikes**, **explosive moves**, or **sharp reversals**.

![](https://www.skylit.ai/docs/images/PCH2tuMunfa5tWOTvj52.webp)SPY 660 bounce from October 13th, 2025. QQQ had a strong floor below price and SPX was showing upside accumulation. *With QQQ holding its floor and SPX growing to the upside, two of the three Trinity maps leaned bullish. SPY's downside nodes then unwound quickly and price made a sharp, V-shaped recovery, an example of why traders watch nodes for rate of change.*" width={3355} height={1235} />

> Watch the **rate of change** — it reveals urgency and intent behind Market Maker adjustments.

### Rolling of Ceilings / Floors

Another key concept in relation to node rate of change is the behavior in how rate of change occurs:

* ***Rolling of ceilings*** - Considered strong presumptive evidence of a bearish thesis playing out.
  * Occurs when we see the upside ceiling and/or upside price targets decrease in value with the ceiling moving to a lower strike.
* ***Rolling of floors*** - Considered strong presumptive evidence of a bullish thesis playing out.
  * Occurs when we see the downside floor and/or downside price targets decrease in value with the floor moving to a higher strike.

![Heatseeker map: Rolling of Ceilings / Floors, Core Concepts](https://www.skylit.ai/docs/images/rUAkBFIjBQb5k7gZTMOD.webp)

### Hedge Nodes

**Hedge Nodes** appear during **major news or macro events** — such as FOMC, CPI, JOLTS, NFP, or earnings.\
They represent **large, protective positions** that sit **farther from price** and move **slowly** throughout the day.

![Heatseeker map: Hedge Nodes, Core Concepts](https://www.skylit.ai/docs/images/3xyQFQFDCq7aYqCgvMhx.webp)

#### Characteristics

* Typically **static or slow-unwinding**.
* Can appear **above and below price** simultaneously, typically far away from current spot price.
* Function like **insurance** rather than active magnets.

The **closer** a Hedge Node is to current price, the **more it shapes intraday behavior**.\
The **farther** it is, the **less influence** it exerts.

> Watch for **gradual unwinds** of large hedge nodes — they often signal changing Market Maker expectations.

### Air Pockets

Air Pockets occur when maps show a zone of low volume and/or small sized nodes that price can move easily through due to the lack of resistance/activity within that zone.

![Heatseeker map: Air Pockets, Core Concepts](https://www.skylit.ai/docs/images/ZyhG1rCjXZDHPcCnoVYZ.webp)

* The quality of the nodes (negative gamma vs positive gamma) can affect how sharp a move price can have.
  * If price action is moving through a negative gamma air pocket region, the moves can be much more violent / sharp.
  * If price action is moving through a positive gamma air pocket region, the moves can be much more mild / slow.

![Heatseeker map: Air Pockets, Core Concepts](https://www.skylit.ai/docs/images/gTXR8R1CducHHN8VhOm6.webp)

Context matters - technical analysis and confluence among the other heatmaps (in trinity mode) can affect the ability for price to move through an air pocket.

* ***An air pocket does not mean price will move through it. It is one input to weigh alongside the other Trinity maps.***

### OPEX Nodes

Monthly options expire on the **third Friday** of the month. The week leading into it is **OPEX Week**.

#### What Happens During OPEX

* Nodes may carry **less weight**, since many contracts are set to **expire**.
* Positions roll off or reset, leading to **temporary distortions** in dealer positioning.
* After OPEX week passes, the map often becomes **clearer**.

> Read OPEX week levels with caution: positioning is temporarily distorted.

***

**In Summary:**

* Focus on **absolute value** — not color or sign.
* **Untouched nodes** tend to matter more than retested ones.
* **Rate of change** gives clues on momentum.
* **Midpoints** are the least clear part of a range; **gatekeepers** and **king nodes** shape where price goes next.
* Be mindful of **external catalysts** like **Power Hour**, **OPEX**, and **Hedge Nodes**.