Crypto Fear & Greed Index

The Crypto Fear and Greed Index is a market sentiment indicator that measures whether crypto investors are currently driven by fear or greed. It aggregates multiple data signals — price action, Reddit mentions, Stocktwits sentiment, news coverage, Wikipedia pageviews and webpage traffic — into a single 0–100 score. Low scores indicate Extreme Fear; high scores indicate Extreme Greed. It’s widely used to identify potential entry points during fear and reduce exposure during greed.

Alternative.me’s widely-cited Crypto Fear and Greed Index is built mostly from market-derived signals — price volatility, market momentum, Bitcoin dominance, Twitter buzz and Google Trends. AltIndex’s index uses 6 signals weighted toward alternative data the dominant index doesn’t track: Reddit mentions across crypto subreddits, Stocktwits sentiment, news coverage in major outlets, Wikipedia pageviews (retail education interest), and direct webpage traffic to crypto destinations. These behavioural signals often shift before price does.

A low score — typically below 25 — indicates Extreme Fear, meaning crypto investors are de-risking, attention is shrinking, and the market may be oversold. Historically, periods of extreme fear in crypto have often preceded recoveries as prices overshoot to the downside. Many contrarian investors use these readings as a cue to start accumulating.

A high score — typically above 75 — indicates Extreme Greed, meaning attention is surging, retail is chasing momentum, and risk-taking is elevated. Historically, these periods in crypto can precede sharp corrections as the market becomes overextended. Many investors treat Extreme Greed readings as a cue to take some risk off the table.

Historically, buying during periods of extreme fear in crypto has produced strong long-term returns, as sentiment overshoots fundamentals. However, the Crypto Fear and Greed Index is a sentiment tool, not a timing tool — it should be used alongside per-coin analysis (AI Score, social-data trends, on-chain signals) and your own risk tolerance, not as a standalone buy signal.

The AltIndex Crypto Fear and Greed Index is updated daily. All 6 underlying signals — price/market cap, Reddit mentions, Stocktwits sentiment, news coverage, Wikipedia pageviews and webpage traffic — are refreshed each morning to reflect the most recent available data across the AltIndex crypto universe.

Crypto markets are driven by attention. Alternative.me’s mix of volatility and dominance describes the result of attention shifts. AltIndex measures the shifts themselves — who’s talking about crypto on Reddit, who’s reading about it on Wikipedia, who’s covering it in financial media, and who’s visiting exchange and project sites. These behaviours frequently move before price catches up.

The historical trend chart on this page shows the index over the past 200 days, with each daily reading. The signal cards below the chart break down each of the 6 inputs individually so you can see which signals are driving today’s score.