The Fear & Greed Index is one of the most widely-referenced measures of stock market investor sentiment. Updated daily, it attempts to answer a simple question: are investors currently driven by fear, or by greed?
The index runs on a scale of 0 to 100. A reading near 0 represents Extreme Fear. A reading near 100 represents Extreme Greed. The underlying logic — popularised by Warren Buffett's famous line — is that the best time to buy is when others are fearful, and the best time to be cautious is when others are greedy.
The five zones
The index divides the scale into five labelled zones:
- 0–24 — Extreme Fear. Investors are panicking. Asset prices may be undervalued relative to fundamentals.
- 25–44 — Fear. Sentiment is negative. Markets are selling off or cautious.
- 45–55 — Neutral. No strong sentiment signal. Market is balanced.
- 56–74 — Greed. Investors are optimistic and risk-on. Markets may be stretched.
- 75–100 — Extreme Greed. Euphoria. Assets may be overvalued. Historically correlates with market tops.
The 7 components that make up the index
The Fear & Greed Index is not a single metric — it's a composite of seven separate market signals, each equally weighted:
1. Stock Price Momentum
Compares the S&P 500 to its 125-day moving average. When the S&P 500 is well above its moving average, momentum is positive (greed). When it trades below, sentiment is fearful.
2. Stock Price Strength
The number of stocks hitting 52-week highs vs 52-week lows on the NYSE. More new highs than lows indicates greed. More new lows signals fear.
3. Stock Price Breadth
Market breadth measured by McClellan Volume Summation Index — how broadly the rally or selloff is distributed across all stocks, not just the mega-caps.
4. Put and Call Options
The put/call ratio — how many investors are buying protective puts (bearish bets) vs calls (bullish bets). A high put/call ratio signals fear. A low ratio signals greed.
5. Market Volatility (VIX)
The CBOE Volatility Index (VIX) measures the market's expectation of 30-day volatility. VIX above 20 is generally considered elevated fear. Below 15 indicates complacency (greed). Spikes above 30 or 40 signal extreme fear and potential capitulation.
6. Safe Haven Demand
The spread between stock returns and bond returns over the last 20 days. When investors flee to the safety of bonds, the spread widens — indicating fear. When stocks outperform bonds substantially, greed is dominant.
7. Junk Bond Demand
The spread between high-yield (junk) bonds and investment-grade bonds. When investors are confident (greedy), they chase yield and accept more credit risk — tightening the spread. When fearful, they demand a bigger premium — widening the spread.
How to read the index historically
Looking back, Fear & Greed Index extremes have frequently coincided with major market turning points:
- March 2020 (COVID crash): FGI reached 2 — extreme fear. The S&P 500 bottomed within days and began a multi-year bull run.
- October 2022 (bear market bottom): FGI dropped to the low teens. The market bottomed and reversed significantly.
- Late 2021 / early 2022 (peak): FGI was in the 70s–80s (greed/extreme greed) just before a 25%+ market decline.
This doesn't mean extreme fear always marks the bottom, or extreme greed always marks the top. It means those readings are worth paying close attention to.
Important caveat: The Fear & Greed Index is a sentiment indicator, not a timing tool. Extreme fear can persist for weeks or months before a recovery. It's most useful as a context filter — combining it with technical indicators gives you a more complete picture than either alone.
How to use the Fear & Greed Index in practice
The most common approaches investors use:
As a contrarian buy signal
When the FGI drops into extreme fear (below 25), some investors treat it as a signal to start buying — or at least to stop selling. The idea: when everyone is panicking, valuations tend to be more attractive.
As a position sizing guide
Some investors scale their equity exposure inversely to the FGI. In extreme greed (above 75), they reduce equity exposure. In extreme fear (below 25), they increase it.
As a confirmation filter for technical signals
This is the approach FearAlert is built around. A technical alert (e.g. RSI oversold) is more meaningful when the macro sentiment is also fearful. A single RSI oversold reading during a period of greed may just be noise — the same reading during extreme fear is a much stronger signal.
Limitations of the Fear & Greed Index
- Lagging in some components. Some sub-components use 20–125 day lookback periods, so the index can be slow to respond to rapid sentiment shifts.
- US equity focused. The index reflects US large-cap sentiment. It's less relevant for international equities, bonds, or commodities.
- Not a timing tool. It tells you about sentiment, not about specific price levels or entry timing.
- Mean reversion isn't guaranteed. Extreme readings can persist longer than expected, especially during structural bear markets.
How to get Fear & Greed Index alerts
The Fear & Greed Index is published daily, but most investors only check it manually and irregularly. The value of the index as a systematic tool comes from monitoring it consistently and acting on extreme readings — which is difficult to do manually.
FearAlert monitors the Fear & Greed Index every hour and sends you an alert when it crosses your configured threshold — standalone, or combined with a technical indicator condition on any stock or ETF. You can also subscribe to a daily digest that includes the current FGI reading every morning.