Fear and Greed Index (Concept)
The Fear and Greed Index is a composite sentiment gauge — popularised globally by CNN Business — that aggregates multiple market-derived signals to produce a single score indicating whether investors are behaving in a fearful or greedy manner; Indian market practitioners and data vendors have developed analogous composite indicators adapted to NSE and BSE data.
The original CNN Fear and Greed Index combined seven inputs for the US market: stock price momentum, stock price strength, stock price breadth, put-call ratio, junk bond demand, market volatility, and safe haven demand. Each component was individually normalised and averaged to produce a 0-100 scale, with readings below 25 historically associated with fear and above 75 with greed.
In the Indian context, no single widely-adopted standardised index existed as of the mid-2020s, but multiple brokerages, fintech platforms, and data analytics firms constructed their own versions. Common inputs used in Indian adaptations included the Nifty 50 distance from its 125-day moving average, the India VIX level and trend, the put-call ratio on NSE F&O, net FII equity buy-sell differential, and advance-decline breadth on NSE.
India VIX, introduced by NSE in 2008 and modelled on the CBOE VIX, became one of the most widely referenced fear proxies in Indian markets. Historically, India VIX spikes above 30-35 corresponded to periods of elevated fear — the March 2020 COVID crash saw India VIX touch above 80, its highest recorded level. Conversely, extended periods of India VIX below 15 coincided with complacent or greedy market environments.
The NSE put-call ratio on index options served as another fear/greed proxy. Elevated PCR readings — where put open interest substantially exceeded call open interest — historically corresponded to hedging demand driven by fear, while low PCR readings reflected complacency. Weekly F&O expiry data published by NSE showed PCR swings that market analysts correlated with short-term sentiment extremes.
FII equity flow data, published daily by SEBI and NSE, formed part of composite sentiment trackers. Sustained weeks of heavy FII net selling have historically been associated with fear conditions, while prolonged FII buying streaks accompanied greed phases. The practical limitation was that FII flows responded to both Indian-specific sentiment and global risk-off conditions driven by US Fed policy or dollar strength, making interpretation context-dependent.
Sentiment indicators of this type are descriptive tools used in financial education and commentary. Historical research on contrarian investing suggested that extreme fear readings preceded above-average medium-term returns more often than not, while extreme greed readings preceded below-average returns — but the lead times were highly variable, making these tools useful for context rather than precise timing.