OPEN-SOURCE SCRIPT
Market Internal Strength (Nasdaq/S&P 500)

### Summary
This indicator is a versatile tool designed to measure the "internal health" or "market breadth" of a major stock index. Instead of just looking at the index's price, it analyzes the percentage of its constituent stocks that are participating in the trend. Users can easily switch between the **Nasdaq 100** and the **S&P 500** directly from the settings.
The data is displayed as an oscillator (scaled 0-100), similar to the RSI, making it intuitive to identify broad market **Overbought** and **Oversold** conditions and spot potential **Divergences** against the index price.
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### What does it measure?
The indicator plots three lines based on the selected index's market breadth data:
* **% > 20D MA (Blue Line):** The percentage of stocks trading above their 20-day moving average (short-term trend).
* **% > 50D MA (Orange Line):** The percentage of stocks trading above their 50-day moving average (medium-term trend).
* **% > 200D MA (Red Line):** The percentage of stocks trading above their 200-day moving average (long-term trend).
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### How to Use and Interpret
**1. Overbought / Oversold Conditions:**
* **Approaching the Overbought Zone (Value > 80):** This indicates that a very high number of stocks are in an uptrend, suggesting the market may be overheated or in a state of "Greed." This can signal a potential pullback or consolidation ahead.
* **Approaching the Oversold Zone (Value < 20):** This indicates that a large number of stocks have been sold off heavily, suggesting the market may be in a state of "Extreme Fear." This could present an opportunity for a technical rebound.
**2. Trend Confirmation:**
* When an index (e.g., QQQ or SPY) is making new highs and the **% > 200D MA** line is also rising, it confirms that the uptrend is healthy and broadly supported by the majority of stocks.
**3. Divergence Signals:**
* **Bearish Divergence:** If the index price reaches a new high but the indicator (especially the 50D and 200D lines) forms a lower high, it's a warning sign. This suggests that fewer stocks are participating in the rally and the trend's foundation is weakening, which could precede a reversal.
* **Bullish Divergence:** Conversely, if the index price makes a new low but the indicator forms a higher low, it signals that selling pressure is exhausting. Fewer stocks are making new lows, which could be an early sign of a potential bottom and a reversal to the upside.
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### Settings
* **Index:** Choose between the "Nasdaq 100" and "S&P 500" as your data source.
* **Timeframe:** Allows you to select the data's timeframe (Daily "D" is recommended as the minimum).
* **Overbought/Oversold Level:** Lets you customize the threshold for the OB/OS zones.
* **Line Visibility:** You can toggle the visibility of each of the three lines.
This indicator is a versatile tool designed to measure the "internal health" or "market breadth" of a major stock index. Instead of just looking at the index's price, it analyzes the percentage of its constituent stocks that are participating in the trend. Users can easily switch between the **Nasdaq 100** and the **S&P 500** directly from the settings.
The data is displayed as an oscillator (scaled 0-100), similar to the RSI, making it intuitive to identify broad market **Overbought** and **Oversold** conditions and spot potential **Divergences** against the index price.
---
### What does it measure?
The indicator plots three lines based on the selected index's market breadth data:
* **% > 20D MA (Blue Line):** The percentage of stocks trading above their 20-day moving average (short-term trend).
* **% > 50D MA (Orange Line):** The percentage of stocks trading above their 50-day moving average (medium-term trend).
* **% > 200D MA (Red Line):** The percentage of stocks trading above their 200-day moving average (long-term trend).
---
### How to Use and Interpret
**1. Overbought / Oversold Conditions:**
* **Approaching the Overbought Zone (Value > 80):** This indicates that a very high number of stocks are in an uptrend, suggesting the market may be overheated or in a state of "Greed." This can signal a potential pullback or consolidation ahead.
* **Approaching the Oversold Zone (Value < 20):** This indicates that a large number of stocks have been sold off heavily, suggesting the market may be in a state of "Extreme Fear." This could present an opportunity for a technical rebound.
**2. Trend Confirmation:**
* When an index (e.g., QQQ or SPY) is making new highs and the **% > 200D MA** line is also rising, it confirms that the uptrend is healthy and broadly supported by the majority of stocks.
**3. Divergence Signals:**
* **Bearish Divergence:** If the index price reaches a new high but the indicator (especially the 50D and 200D lines) forms a lower high, it's a warning sign. This suggests that fewer stocks are participating in the rally and the trend's foundation is weakening, which could precede a reversal.
* **Bullish Divergence:** Conversely, if the index price makes a new low but the indicator forms a higher low, it signals that selling pressure is exhausting. Fewer stocks are making new lows, which could be an early sign of a potential bottom and a reversal to the upside.
---
### Settings
* **Index:** Choose between the "Nasdaq 100" and "S&P 500" as your data source.
* **Timeframe:** Allows you to select the data's timeframe (Daily "D" is recommended as the minimum).
* **Overbought/Oversold Level:** Lets you customize the threshold for the OB/OS zones.
* **Line Visibility:** You can toggle the visibility of each of the three lines.
Script open-source
In pieno spirito TradingView, il creatore di questo script lo ha reso open-source, in modo che i trader possano esaminarlo e verificarne la funzionalità. Complimenti all'autore! Sebbene sia possibile utilizzarlo gratuitamente, ricorda che la ripubblicazione del codice è soggetta al nostro Regolamento.
Declinazione di responsabilità
Le informazioni ed i contenuti pubblicati non costituiscono in alcun modo una sollecitazione ad investire o ad operare nei mercati finanziari. Non sono inoltre fornite o supportate da TradingView. Maggiori dettagli nelle Condizioni d'uso.
Script open-source
In pieno spirito TradingView, il creatore di questo script lo ha reso open-source, in modo che i trader possano esaminarlo e verificarne la funzionalità. Complimenti all'autore! Sebbene sia possibile utilizzarlo gratuitamente, ricorda che la ripubblicazione del codice è soggetta al nostro Regolamento.
Declinazione di responsabilità
Le informazioni ed i contenuti pubblicati non costituiscono in alcun modo una sollecitazione ad investire o ad operare nei mercati finanziari. Non sono inoltre fornite o supportate da TradingView. Maggiori dettagli nelle Condizioni d'uso.