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This weight distribution graph offers traders a powerful tool to understand Gamma Exposure (GEX) and its influence across different strike prices and expiry dates. By visualizing weight, traders can identify key areas of market focus, track shifts in sentiment, and anticipate potential price movements based on options activity. While it provides deep insights into options market dynamics, it should be used in conjunction with other tools to form a complete picture of both market sentiment and stock price trends.

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Key Features

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Weight by Strike Price and Expiry Date

  • X-axis: Strike prices
  • Y-axis: Expiry dates for the options
  • Z-axis (color intensity): The weight of each option, defined as the option’s GEX relative to the total GEX of all options. Darker areas indicate higher weight, highlighting where the greatest influence lies in terms of market sensitivity.

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Current Price Indicator

A dotted vertical line marks the current stock price. This helps traders quickly see how the stock price compares to the options market and the areas where significant options activity (weight) is concentrated.

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Marginal Histograms

Marginal histograms on the x-axis (strike price) and y-axis (expiry date) provide additional insights into the distribution of weight, giving a clearer picture of where options activity is focused. These histograms show how concentrated options data is around particular strikes and expiry dates.

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Advantages of the Weight Plot

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Identifying High-Impact Options

The weight represents each option’s contribution to the overall Gamma Exposure, making it easier to spot which options are most influential in terms of market sensitivity. Heavy concentration at certain strike prices or expiry dates can indicate key support or resistance areas that might trigger price movement.

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Spotting Market Sentiment

By visualizing the weight across calls and puts, traders can gauge market sentiment. For example, a concentration of weight near call strikes suggests a bullish bias, while heavier put-weight concentrations might signal bearish sentiment.

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Understanding Volatility and Risk

A higher weight indicates an option is more sensitive to stock price movements, and these options will likely contribute more to market volatility. This insight helps traders manage risk and identify volatile price movements that could impact their positions. The plot allows for quick assessment of how market focus shifts as expiry dates approach. If there is increasing weight concentrated on a particular expiry, it may indicate that traders are positioning for an event (e.g., earnings or an economic report) tied to that expiration.

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Strategic Insights

For traders, this plot helps inform options strategy. For example, if you’re selling options, you might focus on strikes with lower weight, while if buying options, you may look for strikes with higher weight where market activity is more concentrated.

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Limitations

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Snapshot in Time

The graph is a snapshot of options market activity at a given moment and does not show how the weight evolves over time. To track shifts in market sentiment and positioning, it should be combined with other time-based analyses. The graph visualizes options activity but does not directly show stock price trends. It’s focused on how options are distributed across strike prices and expiries, not on price movements in the underlying stock.