F&G Alert

What is the Bitcoin Fear & Greed Index?

Actualizado: 2026-05-04 · Tiempo de lectura: ~5 min

The crypto market behavior is highly emotional. People tend to get greedy when the market is rising, resulting in FOMO (Fear of Missing Out). On the other hand, people often sell their coins in irrational reaction of seeing red numbers. The Bitcoin Fear and Greed Index (provided by Alternative.me) aims to measure the current overarching emotion of the crypto market.

Calculation Dimensions

Unlike stock market indices, the crypto Fear & Greed Index incorporates more data regarding social and network trends:

  • Volatility (25%): Compares current volatility and max drawdowns with the average values of the last 30 and 90 days. An unusual rise in volatility is a sign of a fearful market.
  • Market Momentum/Volume (25%): Compares current volume and market momentum with long-term averages. High buying volumes indicate greedy behavior.
  • Social Media (15%): Gathers and counts posts on Twitter (X) with various crypto hashtags and measures their interaction rates.
  • Dominance (10%): The market cap share of Bitcoin. A rise in Bitcoin dominance is often seen as a flight to the "safe haven" of crypto, representing fear of altcoin investments.
  • Trends (10%): Analyzes Google Trends data for various Bitcoin-related search queries (e.g., a surge in searches for "bitcoin crash" indicates fear).

Trading Implications

The index ranges from 0 to 100:

  • Extreme Fear: Can be a sign that investors are too worried. That could be a good buying opportunity.
  • Extreme Greed: Indicates that the market is due for a correction, and investors should consider taking profits or managing risks.

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