HF Dominance and GEX Dominance Bubbles
TradeGEX overlays two types of bubbles directly on the price chart: HF Dominance bubbles and GEX Dominance bubbles. Both are visual impressions printed onto the chart in real time throughout the session. Each has a distinct origin and encodes different information. Understanding what each bubble type represents, where it comes from, and how to read it transforms the chart from a price canvas into a map of institutional activity and structural weight.
HF Dominance Bubbles
HF Dominance bubbles are a derivative of the HF Waveform. They share the same data origin: the real time flow of institutional hedging activity measured at each options strike. The HF Waveform and HF Line show aggregate flow intensity as a continuous signal over time. HF bubbles take that same data and stamp it onto the price chart as individual impressions, anchored to the specific price level and the specific candle where the activity occurred.
Every candle interval, the system stamps bubbles at the price levels where hedge flow activity was most concentrated, plotted directly onto the price axis where it happened. As the session develops, these impressions accumulate and form a picture of institutional engagement across time and price.
What Each HF Bubble Encodes
- Price position: the strike where institutional hedging flow was concentrated during that candle
- Color: cyan for net positive (buying) flow at that strike, orange for net negative (selling) flow
- Size: the relative intensity of that strike compared to the strongest strike in the same candle. The largest bubble is the dominant strike. Smaller bubbles are secondary activity at lower flow levels
- Opacity: inversely scaled to size. Smaller bubbles are more opaque, larger bubbles are more transparent. This keeps all activity visible without the overlay obscuring price action
HF Bubbles as a Session History
The accumulation of HF bubbles across a session creates something no single indicator reading can provide: a record of exactly where institutional flow has been active, stamped onto the price chart at the moment it happened. Dense clusters of cyan bubbles at a price zone across multiple candles tell you that participants have been repeatedly buying at that level. That is structural commitment being recorded in real time.
Equally informative is where bubbles are absent. Price can visit any level, but institutional hedging flow only appears where it actually occurred. A zone that price entered but where no bubbles formed is a zone the market moved through without institutional backing. The absence of bubbles beyond a level is as meaningful as their presence within one.
The edge of HF bubble activity is one of the most important structural reads on the chart. Where bubbles stop forming is where real institutional participation ends. Price moving beyond that edge is moving into territory that the flow has not yet confirmed. Whether it stays there or reverses depends entirely on what the HF Waveform does next.
GEX Dominance Bubbles
GEX Dominance bubbles have a different origin. While HF bubbles come from flow activity, GEX bubbles come from the GEX profile. Each bubble is printed at a strike carrying significant gamma exposure, at a specific point in time, recording the nature and relative weight of that gamma concentration at that moment. They are not a record of what participants did. They are a record of where the structural weight of the options market was sitting.
The GEX profile changes throughout the session as options positioning shifts intraday. Each time the system captures a GEX snapshot it stamps bubbles at the most dominant strikes onto the chart. The accumulated result is a layered history of gamma concentration across the session. A strike that appears repeatedly as a large GEX bubble across many candles is a structural anchor that has been persistent. A strike that appeared briefly and then disappeared reflects positioning that rotated.
What Each GEX Bubble Encodes
- Price position: the options strike where significant gamma is concentrated, translated to the futures price axis
- Color: teal for positive GEX (dealer hedging dampens moves here), red for negative GEX (dealer hedging amplifies moves through here)
- Size: reflects the relative weight of that strike within the GEX profile at that moment. More dominant strikes produce larger bubbles. Secondary strikes are rendered smaller and at reduced opacity
- Persistence: the same strike appearing as a large bubble across many consecutive candles indicates a level the options market has consistently priced as significant throughout the session
What GEX Bubbles Reveal About Structure
GEX bubbles project the options market structure directly onto the price chart. A cluster of red GEX bubbles at a zone tells you negative gamma has been concentrated there. That zone is not random. It is mechanically significant territory where dealer behavior will accelerate moves in the direction of whatever flow commits. A cluster of teal GEX bubbles marks a zone where positive gamma has been dominant, where dealer hedging pushes back against directional moves and creates gravitational pull toward that strike.
The persistence of GEX bubbles at a level over time tells you how entrenched that structural concentration is. A level that has shown large teal GEX bubbles from the open through midday is a level the options market has priced as a gravitational anchor for the entire session. A level where GEX bubbles appeared and then faded reflects a structural weight that rotated, which itself is information about how the regime is shifting.
Reading Both Overlays Together
Each bubble type answers a different question. GEX bubbles answer: where is the structural weight of the options market located? HF bubbles answer: where has institutional flow actually been active? The combination maps both the terrain and the activity within it simultaneously.
| What You See | What It Means |
|---|---|
| Dense cyan HF bubbles at a zone across multiple candles | Institutional buying flow has been repeated and sustained. The zone has real participant backing |
| Dense orange HF bubbles at a zone | Institutional selling flow has been active and repeated. The zone has been under persistent pressure |
| Teal GEX bubbles persistent at a zone | Positive gamma concentrated here. Dealer hedging creates a gravitational pull toward this level and dampens moves away from it |
| Red GEX bubbles at a zone | Negative gamma concentrated here. Dealer hedging amplifies moves through this zone in whichever direction the flow commits |
| Price beyond a GEX level with no HF bubbles on the other side | The move is not confirmed by institutional flow. The level has not been genuinely broken. Price is in territory without structural backing |
| HF bubbles forming beyond a GEX level | Flow is appearing in new territory. Participants are now active on the other side. The level has been genuinely broken |
Configuration
Both overlays are controlled independently in the chart settings panel. GEX Dominance toggles the GEX bubbles. HF Dominance toggles the HF bubbles. Both are enabled by default. Disabling either affects only the visual layer. The underlying data and all other indicators remain unchanged.
On high activity sessions both overlays together can create a dense visual layer. A practical approach is to use both during session review when studying the full picture of the day, and to disable one temporarily during active trading if you prefer a cleaner chart. Most traders keep HF bubbles on during the session for live flow reference and review GEX bubbles during pre and post session analysis.
Bubbles are grouped to the current chart timeframe. On a 1 minute chart each bubble cluster represents activity within a single minute. On a 5 minute chart activity is compressed into 5 minute windows. Lower timeframes produce more granular patterns useful for precise entry timing. Higher timeframes compress the session history and are better for identifying structural zones that have been consistently active across the full day.
See the Bubbles on Live Markets
HF and GEX Dominance bubbles update in real time on ES, NQ, RTY, GC, and CL futures.
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