If you spend any time around crypto markets, you have seen the Fear & Greed Index. It is one of the most shared, most screenshotted and most misread numbers in the space. Every time Bitcoin drops 10% in a week, someone posts "Extreme Fear" with a caption about blood in the streets. Every time BTC rips higher, someone posts "Extreme Greed" as a warning.
So what does it actually measure, and how do people who watch it daily read it? This guide covers both, plus the index's real track record through September 2026.
What is the Fear & Greed Index?
The Crypto Fear & Greed Index is a daily sentiment score from 0 to 100. Zero is "Extreme Fear": the market is deeply pessimistic. One hundred is "Extreme Greed": traders are euphoric and, often, overleveraged.
It is published by Alternative.me, and its history runs back to February 2018. Two details surprise people. First, it is a Bitcoin index: Alternative.me says the current version is "for bitcoin only," because so much of it is built on BTC's own volatility. Second, it moves once a day. Each reading is stamped at midnight UTC, so it will not react to a flash crash in the middle of your afternoon.
What Data Goes Into It?
Alternative.me's methodology lists six weighted components. Only five of them are live.
| Source | Weight | What It Measures |
|---|---|---|
| Volatility | 25% | BTC volatility and maximum drawdowns against their 30-day and 90-day averages. Unusually high volatility reads as fear. |
| Market Momentum / Volume | 25% | Volume and momentum against the same averages. Heavy buying in a rising market reads as greed. |
| Social Media | 15% | Posts and interactions on crypto hashtags on X (Twitter). Reddit analysis is still not in the live index. |
| Surveys | 15% | Weekly crypto polls on strawpoll.com. Currently paused. |
| Bitcoin Dominance | 10% | BTC's share of total crypto market cap. Rising dominance is treated as a retreat from speculative altcoins, which reads as fear. |
| Google Trends | 10% | Search volume for Bitcoin-related queries, plus which related searches are climbing. |
With surveys paused, the other five inputs carry the whole score, and half the weight comes from volatility and momentum measured against Bitcoin's own recent averages. That makes the index relative. It scores how the last few weeks compare with the last few months, not whether the price is high or low.
How to Read the Zones
The labels come from Alternative.me itself, and the ranges below match how its API has classified every daily reading since 2018. Note that Neutral is a band, not a single midpoint.
| Range | Zone | What It Signals |
|---|---|---|
| 0 to 25 | Extreme Fear | Deep pessimism, usually after a sharp drawdown. Has shown up near several major lows, and has also lasted for weeks. |
| 26 to 46 | Fear | Negative but not panicked. Caution is widespread. |
| 47 to 54 | Neutral | Neither side dominates. Often a transition between regimes. |
| 55 to 75 | Greed | Optimism building, momentum positive, leverage usually rising. |
| 76 to 100 | Extreme Greed | Euphoria. Has come before some sharp pullbacks, but a market can sit here for weeks. |
Fear is the more common extreme. Of more than 3,100 daily readings since 2018, about 23% landed in Extreme Fear and only about 9% in Extreme Greed. The median is 44.
What the Extremes Actually Looked Like
How the index read at some of the biggest turns since 2021, using Alternative.me's daily history and Coinbase prices:
| Date | Reading | What Bitcoin Was Doing |
|---|---|---|
| Nov 9, 2021 | 84 | A day before BTC's then-record near $69,000. A year later it bottomed near $15,500. |
| Jun 18, 2022 | 6 | Weeks after Terra/Luna collapsed and days after Celsius froze withdrawals. BTC briefly near $17,600. |
| Nov 22, 2024 | 94 | Post-election rally, BTC just under $100,000. Highest reading since February 2021. |
| Oct 6, 2025 | 71 | BTC's all-time high, about $126,000. The top printed in plain Greed. |
| Oct 11, 2025 | 27 | The day after roughly $19 billion in leveraged positions were liquidated, the largest day on record. |
| Feb 12 and 23, 2026 | 5 | Matched the index's all-time low from August 2019, after a flush to about $60,000 on February 6. |
| Jul 1, 2026 | 11 | BTC's lowest price since the peak, about $57,700. Less fear than February. |
| Sep 2026 | 78 | First Extreme Greed since July 2025, after BTC ran from about $76,000 to above $85,000 in under a week. Still roughly a third below its high. |
The extremes do cluster around important moments: 84 the day before the 2021 top, 6 near the 2022 capitulation. But the index does not have to hit an extreme to mark a turn. The 2025 all-time high came at 71, and the lowest price since then arrived in July 2026 with the index at 11, not in February when it sat at 5.
How Experienced Traders Actually Use It
Most people treat the index like a buy or sell button. People who watch it daily treat it as context.
Contrarian framing. Extreme sentiment tends to overshoot and then fade. A reading under 20 says the crowd is scared; over 80 says it is euphoric. That describes the crowd. It is not a price target, and it says nothing about timing.
Confirmation, not initiation. The index works best as one vote among several. A low reading that lines up with negative funding rates, heavy liquidations and on-chain data showing coins leaving exchanges says far more than any of them alone.
Duration awareness. 2026 taught this one the hard way. The index spent 137 of the year's first 265 days in Extreme Fear, including a 46-day run from January 30 to March 16, the third longest in its history after 74 days in 2022 and 49 in 2020. Anyone who treated the first Extreme Fear print as a signal watched it sit there for months. The index tells you the market is scared. It does not tell you when the scared stop selling.
Level versus change. Because the score compares recent behavior with recent averages, it resets as the market adapts. In September 2026 a fast bounce pushed it to 78 with Bitcoin a third below its peak; in November 2024, 94 came with BTC near $99,000. Read it as "how does this move feel," not "is this price expensive."
Timeframe. One reading a day makes it a swing-trade input. On five-minute candles it is background noise.
How It Compares to Other Sentiment Gauges
CoinMarketCap's index. CMC's version, launched in August 2023, looks beyond Bitcoin. It blends momentum across the ten largest non-stablecoin assets, Volmex implied volatility (BVIV and EVIV) for BTC and ETH, the Bitcoin and Ether options put/call ratio, the Stablecoin Supply Ratio, and CMC's own search and engagement data. Its zones are even 20-point bands, so Extreme Greed starts at 80, not 76. As this update went live, CMC read 77 to 79 and called it Greed while Alternative.me's 78 counted as Extreme Greed. Both touched 5 in February; CMC's one-year high of 82 came on August 27, a day Alternative.me read 71.
CNN's Fear & Greed Index. Stocks have their own gauge. CNN's index weights seven indicators equally: S&P 500 momentum against its 125-day average, 52-week highs versus lows, volume breadth, the put/call ratio, junk bond demand, the VIX against its 50-day average, and safe-haven demand. On September 21, 2026 it read about 34, in Fear, with its new-highs and breadth readings near zero, days after the Federal Reserve raised rates for the first time since 2023. Crypto's index was climbing into Extreme Greed on a short squeeze. A split that sharp suggests one market is trading its own positioning rather than the shared macro backdrop.
What Does It Look Like Right Now?
On the TerminalFeed dashboard, the latest Alternative.me reading sits in the regime band at the top of the page, beside Bitcoin's 24-hour move, the S&P 500, the Nasdaq and market breadth, and it feeds the band's RISK ON / RISK OFF verdict. It also shows in the Market Hours panel header.
The index is most useful next to the data it cannot see: live BTC price, funding rates, liquidations, Hyperliquid open interest, Polymarket and Kalshi odds and the VIX. For a one-paragraph definition, see the glossary entry.
See the live Fear & Greed reading alongside 100+ real-time panels.
Open TerminalFeed DashboardThe Fear & Greed Index is not a crystal ball. It will not tell you where Bitcoin is going next week, and 2026 showed it can sit near a record low for weeks while the price keeps sliding. What it does well is tell you how the market feels right now, measured the same way every day since 2018. Read it, check it against other data, and make your own decisions.