Weights Adjustment:
Changed from dynamic weights (1.2, 1.1, 1.3, etc.) to equal weights (all 1.0) to match the official CNN methodology.
Strength Calculation:
Now uses actual counts of stocks at 52-week highs/lows (INDEX:HIGN/LOWN) instead of S&P price extremes.
Breadth Indicator:
Implemented McClellan Volume Summation Index instead of simple volume difference, aligning with CNN's approach.
Time Periods:
Changed Put/Call ratio averaging from 5 to 10 days
Normalized over 250 days instead of 756 days (closer to CNN's timeframe)
Adjusted ROC periods for better accuracy
Visual Improvements:
Dynamic color gradient based on index value
Added neutral zone (45-55)
Defined zones with background colors
Adjusted thresholds (25-45-55-75-95 instead of 20-40-60-80)
Semi-transparent reference lines
Mathematical Precision:
Improved the final calculation formula, dividing by sum of weights instead of fixed value 7.
These changes make the indicator more accurate and visually informative while staying closer to CNN's original methodology.
The CNN Fear and Greed Index cannot be fully replicated in Pine Script due to limitations in data availability and transparency. Many of the components used by CNN—such as the exact number of stocks hitting 52-week highs and lows across all major U.S. exchanges, proprietary market breadth indicators, and detailed institutional sentiment measures—are not publicly available or accessible through TradingView’s data feeds. Additionally, CNN does not disclose the exact formulas, weightings, or smoothing methods it applies to each component. As a result, while a close approximation can be constructed using publicly available proxies like INDEX:HIGN, INDEX:LOWN, or FRED economic data, the script remains an estimate and may not match the official index values precisely.