What is the Fear & Greed Index?

Prices are falling and you’re reading about panic everywhere: just how scared is the market? The Fear & Greed Index tries to turn that mood into a number. Think of it as a thermometer of market psychology, not a forecast of the next price move.

The scale runs from 0 to 100. Near zero, extreme fear prevails; near one hundred, extreme greed. A reading of 20, for example, signals strong fear. It doesn’t mean that 20% of investors are afraid, nor that there’s a specific probability of a rise or a fall.

There’s no single version of the index. Depending on the provider, the calculation may combine price volatility, trading volume, market momentum, social media data or internet searches. Some versions focus mainly on Bitcoin, even when they’re presented as a picture of the whole crypto market.

Why it matters

Psychology affects our decisions. When everything is going up, it’s easy to feel you’re missing the boat. When prices are crashing, fear can drown out every other piece of information. The index offers a snapshot of that mood and helps separate it from the technology or the real-world use of a project.

We find it useful as a sentiment gauge, not an automatic trading signal. On its own, it doesn’t look at a network’s security, a token’s economics or whether a service is actually being used.

What to watch out for

Extreme fear doesn’t mean the drop is over. Likewise, extreme greed doesn’t prove a crash is imminent. The market can stay in either state for a long time.

When you see a reading, check who calculates it, which market it covers and when it was last updated. Different methodologies can give different values on the same day. Also, an index based mainly on Bitcoin doesn’t necessarily describe what’s happening with a small altcoin.