Fear & Greed Index
The Crypto Fear and Greed Index is a score from 0 to 100 that tries to summarise the mood of the crypto market. Low readings mean fear dominates, high readings mean greed, and it is built from data such as volatility, momentum, social media activity and search trends.
What goes into the index
The idea comes from a similar gauge for the stock market. The most widely cited crypto version is published daily and focuses on Bitcoin. It combines several inputs: how volatile prices are compared with recent averages, trading momentum and volume, activity and engagement on social media, Bitcoin's share of the total crypto market, and how often people search for crypto-related terms.
Each input is scored and weighted, then combined into one number. Readings below about 25 are labelled extreme fear, readings above about 75 extreme greed, with fear, neutral and greed in between. Other providers publish their own versions with different inputs, so figures are not always comparable.
How people use it
Many traders treat the index as a reminder of crowd psychology. A well-known saying advises being fearful when others are greedy and greedy when others are fearful. Some investors view extreme fear as a time to stay calm instead of selling in panic, and extreme greed as a time to check their risk.
Say the index drops from 70 to 15 within two weeks after a sharp sell-off. That tells you sentiment has swung strongly, not that the bottom is in. Fear can stay extreme for weeks while prices keep falling.
Limits and common mistakes
The index describes the present mood; it does not forecast. Its inputs largely reflect recent price moves, so it often just repeats what the chart already shows. Its exact method can change, and parts like social media data are easy to distort.
Using it as a buy or sell signal on its own is a common mistake. Extreme readings have occurred both near major turning points and in the middle of long trends.
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Frequently asked questions
What does extreme fear mean in crypto?
It means the index's inputs, such as falling prices, high volatility and negative social activity, point to strong pessimism. It is a description of mood, not a signal that prices will rise.
How often is the Fear and Greed Index updated?
The most widely cited version updates once a day. Other providers may update more often.
Is the Fear and Greed Index reliable?
It is a reasonable summary of sentiment but a poor timing tool. Extreme readings can persist for long periods, and the index mostly reflects price action that has already happened.
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