Crypto Fear & Greed Index — 30-Day Sentiment
Aggregated market sentiment score from 0 (Extreme Fear) to 100 (Extreme Greed).
What the Index Measures
The Crypto Fear & Greed Index aggregates six data sources into a single 0-100 sentiment score: market volatility (25%), market momentum & volume (25%), social media sentiment (15%), surveys (15%), Bitcoin dominance (10%), and Google Trends (10%). It's widely used as a contrarian indicator.
Contrarian Trading Logic
The Fear & Greed Index is most powerful when used as a contrarian signal. Extreme Fear readings (0-25) have historically coincided with excellent buying opportunities in secular bull markets — the market has capitulated, sellers are exhausted. Extreme Greed (75-100) has often preceded sharp corrections as euphoric buyers run out of new money. This is not a perfect timing tool but a useful risk-awareness signal.
Limitations to Know
The index can stay in Extreme Greed for weeks during strong uptrends — selling too early costs gains. In true bear markets, it can remain in Fear for months — buying on Fear in a bear market loses money. Always combine sentiment data with price trend, volume, and on-chain analysis. The index is one input, not a standalone strategy.