Crypto Fear and Greed Index
The Crypto Fear and Greed Index aggregates sentiment signals into a single 0–100 score — helping traders recognize emotional extremes that often mark market turns.
Crypto Fear and Greed Index
The Crypto Fear and Greed Index condenses market sentiment into a 0–100 score — extreme fear often marks bottoms, extreme greed often marks tops.
Markets swing between fear and greed. The Crypto Fear and Greed Index, popularized by alternative.me, quantifies this swing daily, giving traders a quick read on whether the crowd is panicking or euphoric.
What is the Fear and Greed Index?
The index is a composite score from 0 (extreme fear) to 100 (extreme greed) that reflects overall crypto market sentiment. It updates daily based on multiple data sources and is widely tracked by traders and analysts.
The premise is simple: when everyone is fearful, prices are often near bottoms. When everyone is greedy, prices are often near tops.
How the index is calculated
The index combines several weighted inputs:
| Signal | What it measures |
|---|---|
| Volatility | Current vs. 30/90-day average |
| Market momentum | Current price vs. 30/90-day average |
| Social media | Volume and sentiment on crypto forums |
| Surveys | Polls of retail investors |
| Dominance | BTC share of total market cap |
| Google Trends | Search volume for crypto terms |
No single input drives the score — it's the blend that matters.
Reading the score
| Score | Label | Interpretation |
|---|---|---|
| 0–24 | Extreme Fear | Potential buying opportunity |
| 25–49 | Fear | Cautiously constructive |
| 50–74 | Greed | Cautiously cautious |
| 75–100 | Extreme Greed | Potential selling opportunity |
Tip: A single reading is noise. Look at multi-week extremes and trends.
How traders use it
As a contrarian indicator
- Extreme fear → scale into positions, especially BTC and ETH
- Extreme greed → take profits, raise stablecoin balances
- Mid-range → trade technicals without sentiment bias
As a sentiment filter
- Don't fight sentiment extremes — they often persist
- Confirm with on-chain data and price action
- Use it as one of several inputs, not a sole signal
As a risk gauge
- High greed = elevated risk of sharp correction
- High fear = elevated chance of recovery if fundamentals hold
- Watch how price reacts to extreme readings
Strengths of the index
- Simple — one number captures sentiment
- Free — published daily online
- Historical — multi-year data lets you compare cycles
- Multi-source — no single input dominates
Limitations
- Lagging — sentiment shifts after price, not before
- Black-box — exact weights aren't fully transparent
- Survey bias — small samples of motivated respondents
- Twitter noise — social signals can be manipulated
- Altcoin divergence — index is BTC-centric; alts can differ
Real-world examples
- March 2020 (COVID crash): Index dropped to single digits — historic buy signal
- November 2021 (cycle top): Index above 80 — distribution phase
- June 2022 (Terra collapse): Index near 6 — eventual accumulation zone
- Late 2024 (post-ETF rally): Greed readings above 80 preceded a pullback
Each was a noisy signal — not a perfect timer — but consistently flagged emotional extremes.
Combining with other signals
For higher-quality signals, combine the index with:
- MVRV ratio for valuation
- Exchange flows for supply pressure
- Price structure for trend confirmation
- Funding rates for leverage positioning
- BTC dominance for risk appetite
When several indicators align with an extreme sentiment reading, conviction rises.
Common mistakes
- Treating any reading as a precise buy/sell trigger
- Trading against sentiment too early in euphoria (it can run for months)
- Ignoring the score entirely during a hot market
- Assuming the index predicts exact tops or bottoms
Bottom line
The Crypto Fear and Greed Index is a free, simple, and effective sentiment gauge. It won't time the market for you, but it tells you when emotion has run ahead of — or behind — fundamentals. Pair it with discipline, and it becomes a powerful risk-management tool.