What is the Crypto Fear and Greed Index?
The Crypto Fear & Greed Index condenses the emotional state of the entire cryptocurrency market into a single number from 0 to 100. When the crowd is panicking, it reads low. When euphoria takes over, it reads high. Smart money pays attention to both extremes.
How It Works
Originally inspired by CNN's stock market Fear & Greed Index, the crypto version was created by Alternative.me. It pulls data from six sources, each weighted differently:
| Data Source | Weight | What It Measures |
|---|---|---|
| Volatility | 25% | Unusual spikes in BTC volatility vs. 30/90-day averages |
| Market Volume | 25% | Current volume and momentum compared to recent history |
| Social Media | 15% | Hashtag interaction rates, post sentiment on Twitter/Reddit |
| Surveys | 15% | Weekly polling of crypto investors (currently paused) |
| BTC Dominance | 10% | Rising dominance = fear (flight to BTC); falling = greed (risk-on alts) |
| Google Trends | 10% | Search volume for Bitcoin-related queries |
What Each Level Means
| Range | Level | Market Psychology |
|---|---|---|
| 0 – 24 | Extreme Fear | Capitulation, panic selling. Historically a contrarian buy zone. |
| 25 – 49 | Fear | Uncertainty dominates. Investors are cautious but not panicking. |
| 50 | Neutral | Market equilibrium. No strong bias in either direction. |
| 51 – 74 | Greed | Optimism rising. FOMO starts to creep in. |
| 75 – 100 | Extreme Greed | Euphoria. "To the moon" everywhere. Historically a warning sign. |
How Traders Use It
1. Contrarian Signal
Warren Buffett's famous advice — "Be fearful when others are greedy, and greedy when others are fearful" — applies directly. When the index drops below 20, it has historically coincided with local bottoms. When it climbs above 80, corrections often follow.
2. Confirmation Tool
If your technical analysis suggests a buy setup and the index is in the Fear zone, that's additional confirmation. If technicals say buy but the index is at 90 (Extreme Greed), you might want to reduce position size or wait.
3. Risk Management
Some traders scale their position sizes inversely with greed: larger positions during fear, smaller during greed. This naturally implements buy-low, sell-high discipline without emotional decision-making.
Limitations
- Lagging indicator — it measures current sentiment, not where sentiment is going.
- Bitcoin-centric — heavily weighted toward BTC; may not reflect altcoin-specific sentiment.
- Not a timing tool — Extreme Fear can last weeks. Buying at 15 doesn't mean it won't drop to 5.
- Best combined with other analysis — use it alongside price action, on-chain data, and macro context.
Check Today's Fear & Greed Index
Live data with 30-day history chart and comparison cards
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