What is the Crypto Fear and Greed Index?

The Crypto Fear and Greed Index measures market sentiment on a single scale from 0 to 100. Zero represents Extreme Fear, where panic selling and capitulation dominate. One hundred represents Extreme Greed, where speculation and euphoria peak.

The index is published daily by Alternative.me and is the most widely cited sentiment indicator in crypto. It draws inspiration from CNN's traditional Fear and Greed Index for equities, then adapts the methodology to crypto-specific inputs. The current model is built around Bitcoin price action and dominance, with separate altcoin indices planned but not yet released.

The intended use is contrarian. Periods of extreme fear historically coincide with major lows, while extreme greed often marks late-cycle conditions ahead of corrections.

The Five Crypto Sentiment Zones

The 0 to 100 scale is split into five zones, each tied to a distinct market regime:

• 0 to 24: Extreme Fear: Panic selling, capitulation, and forced liquidations. Historically correlated with major buying opportunities.
• 25 to 49: Fear: Risk-off positioning, weak momentum, and elevated volatility. Common during corrections and consolidation phases.
• 50: Neutral: No clear directional sentiment. The market is balanced between buyers and sellers.
• 51 to 74: Greed: Strong momentum, rising volume, and growing speculative activity. Often appears during sustained uptrends.
• 75 to 100: Extreme Greed: Euphoric positioning, parabolic price action, and aggressive risk-taking. Historically precedes corrections.

How the Fear & Greed Index is Calculated

The index blends five active data sources, each weighted by influence on overall market sentiment. Note that surveys, which previously contributed 15%, are currently paused according to Alternative.me:

• Volatility (25%): Current Bitcoin volatility and maximum drawdowns measured against 30-day and 90-day averages. Unusual spikes signal fear.
• Market Momentum and Volume (25%): Current trading volume and price momentum compared to 30-day and 90-day averages. Strong buying volume in an uptrend signals greed.
• Social Media (15%): Engagement rates on X (Twitter) for Bitcoin-related hashtags and posts. Unusually high interaction rates indicate growing public interest and greedy behaviour.
• Bitcoin Dominance (10%): BTC's share of total crypto market cap. Rising dominance signals fear as capital rotates from altcoins back to BTC.
• Google Trends (10%): Search volume for Bitcoin-related queries. Spikes in fearful search terms like "Bitcoin price manipulation" indicate market anxiety.

The five active components combine to 85%. The remaining 15% (formerly surveys) is currently inactive, with the weight redistributed across the live components.

Has the Index Predicted Turning Points?

The index has flagged most major crypto cycle extremes since launch, though with imperfect timing:

• December 2018 (~$3,200 BTC bottom): Hit Extreme Fear at 8, one of the lowest readings ever recorded, weeks before the cycle low.
• March 2020 COVID crash (~$3,800 BTC): Touched 10 during the panic, marking a generational entry point.
• February 2021 (~$58,000 BTC): Reached 95 Extreme Greed weeks before the April top.
• November 2021 peak (~$69,000 BTC): Surprisingly sat in the high 70s rather than 90s, an early signal of weakening euphoria.
• June 2022 (~$17,500 BTC): Dropped to 6 during the Terra Luna and Celsius unwind.
• November 2022 FTX collapse (~$15,500 BTC): Touched 6 again, confirming capitulation and the cycle bottom.
• March 2024 (~$73,000 first ATH): Reached 90 Extreme Greed at the local top before the multi-month consolidation.

The pattern that matters: extreme readings at either end tend to mark turning points within weeks to months, but the index can stay in fear or greed zones for extended periods without reversing. Timing the exact day is impossible; identifying that conditions are stretched is its actual strength.

How to Use the Crypto Fear and Greed Index

The index is most useful as a contrarian sentiment overlay rather than a standalone trade signal. Common approaches include:

• Extreme readings as alerts: Single-digit readings or scores above 90 are statistically rare and historically correlate with turning points. Use them to question existing positioning rather than to immediately reverse it.
• Trend confirmation: A rising index alongside rising price confirms strengthening conviction. A falling index alongside rising price indicates weakening momentum and potential exhaustion.
• Divergence with price: When BTC makes a new high but the index sits lower than at the previous high, sentiment is waning. The 2021 peak showing only mid-70s greed at the all-time high was an early sign of cycle weakness.
• Combine with positioning data: The index measures retail sentiment heavily. Pair it with funding rates and liquidation data for a complete view that includes leveraged positioning.

Limitations of the Index

The index is a useful summary but has real constraints:

• Bitcoin-focused inputs: Volatility and dominance components are calculated from BTC alone. Altcoin and DeFi sentiment can diverge significantly from the headline number.
• Lagging social data: Twitter sentiment and Google Trends often confirm price action rather than lead it. By the time greed shows up in search trends, price has often already moved.
• Surveys are paused: The methodology page lists surveys as a former 15% input that is no longer active. Whether the redistributed weight is structurally sound is open to debate.
• Daily granularity: The index publishes once per day. Intraday flash crashes, liquidation cascades, and short-term euphoric pumps are not captured in real time.
• No leverage component: The index does not incorporate futures open interest, funding rates, or leverage data, which often drive crypto turning points more directly than spot sentiment.

Frequently Asked Questions

Who calculates the Crypto Fear and Greed Index?

The index is calculated and published daily by Alternative.me, a German data platform. It is the most widely cited version, though other providers publish similar sentiment indices with different methodologies.

How often does the index update?

The index updates once per day. The reading typically reflects the prior 24 hours of data across all five components.

Is the index based on Bitcoin or the entire crypto market?

The current methodology is built around Bitcoin. Volatility, momentum, and dominance components all use BTC data, while social and search inputs cover broader crypto terms. Alternative.me has indicated that separate altcoin indices may launch in the future.

What is the lowest score the index has ever recorded?

The index has touched single digits multiple times. Readings of 5 to 8 have appeared during the December 2018 bottom, March 2020 COVID crash, May 2022 Terra Luna collapse, June 2022 Celsius unwind, and November 2022 FTX implosion.

Should I buy when the index shows Extreme Fear?

Extreme Fear has historically coincided with major bottoms, but the index can remain in fear zones for extended periods. A single low reading is context, not a buy signal. Combine it with price structure, BTC ETF flows, funding rates, and macro conditions before acting.