OPEN-SOURCE SCRIPT
VRP IV vs Realised Vol
**Indicator name:** VRP — IV vs Realised Vol
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**What it calculates:**
**Line 1 — India VIX (IV)**
It pulls the daily closing value of India VIX directly from TradingView using `request.security("INDIAVIX", "D", close)`. This is your implied volatility — what the market expects NIFTY to move annually.
**Line 2 — 20-day Realised Volatility (RV)**
It calculates the actual movement of NIFTY over the past 20 trading days using log returns. The formula is: standard deviation of daily log returns × √252 × 100. This converts daily movement into an annualised percentage — same unit as VIX so you can compare them directly.
**Line 3 — VRP**
It subtracts RV from IV. The result is plotted as a histogram.
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**What you see on screen:**
- **Green bar** — VIX is above 20-day RV. IV is overpricing actual movement. Selling has structural edge. Enter trades.
- **Red bar** — VIX is below 20-day RV. IV is underpricing actual movement. No edge. Skip the week.
- **Zero line** — the crossover point. Green above, red below.
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**How to read it practically:**
| Bar colour | What it means | Action |
|---|---|---|
| Green and tall | High VRP — IV significantly above RV | Strong edge — full size |
| Green and small | Low positive VRP — IV slightly above RV | Weak edge — half size |
| Red | Negative VRP — IV below RV | No edge — sit out |
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**One important limitation:**
VIX is a 30-day forward looking measure. RV is a 20-day backward looking measure. They are not perfectly matched in time horizon — but this is the most practical comparison available on TradingView without complex calculations. The signal is directionally correct even if not perfectly precise.
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免責聲明
這些資訊和出版物並非旨在提供，也不構成TradingView提供或認可的任何形式的財務、投資、交易或其他類型的建議或推薦。請閱讀使用條款以了解更多資訊。
開源腳本
秉持TradingView一貫精神，這個腳本的創作者將其設為開源，以便交易者檢視並驗證其功能。向作者致敬！您可以免費使用此腳本，但請注意，重新發佈代碼需遵守我們的社群規範。
免責聲明
這些資訊和出版物並非旨在提供，也不構成TradingView提供或認可的任何形式的財務、投資、交易或其他類型的建議或推薦。請閱讀使用條款以了解更多資訊。