AI Market Sentiment Tool

Market sentiment: what it is and why it matters

Market sentiment refers to the overall attitude of investors and traders towards a particular financial market, asset class or instrument. It is the aggregate of emotions, expectations and positioning that drives price beyond what fundamental analysis alone can explain. Understanding sentiment is understanding why markets sometimes move the "wrong" way in response to news — why good news fails to lift prices, or bad news fails to push them lower.

Sentiment operates on multiple timeframes simultaneously: short-term intraday sentiment (driven by news flow and technicals), medium-term positioning (reflecting conviction in a directional narrative), and long-term structural sentiment (investor confidence in an economy, sector or asset class).

Measuring market sentiment: the key indicators

Professional traders use a range of quantitative and qualitative sentiment measures:

• VIX (CBOE Volatility Index): The "fear index." Measures implied volatility of S&P 500 options. VIX above 25 = elevated fear, risk-off environment. VIX below 15 = complacency, risk-on. Spikes in VIX often coincide with market bottoms; extreme VIX compression often precedes corrections.
• Put/Call ratio: The ratio of put options purchased (bearish bets) to call options purchased (bullish bets). High put/call ratio = excessive bearishness = contrarian bullish signal. Low ratio = excessive bullishness = contrarian bearish signal.
• CFTC Commitment of Traders (COT) report: Published weekly, shows net long/short positioning by commercial hedgers, large speculators and small traders across futures markets. Extreme speculative positioning (historically long or short) is a reliable mean-reversion signal.
• AAII Investor Sentiment Survey: Weekly survey of retail investor bullish/bearish/neutral percentages. When bullish sentiment exceeds 55% or bearish sentiment exceeds 50%, contrarian signals are historically reliable.
• Credit spreads: The spread between corporate bond yields and Treasury yields. Widening spreads signal risk aversion and deteriorating financial conditions — a leading indicator of equity stress.

News flow and sentiment: the feedback loop

News and sentiment interact in a reinforcing feedback loop that experienced traders learn to recognise:

• Bullish sentiment makes markets "news-resistant": In strongly bullish sentiment environments, even marginally disappointing data fails to push markets lower — every dip is bought. This is called "climbing the wall of worry." It ends abruptly when a catalyst breaks the narrative.
• Bearish sentiment creates overshooting: In panic-driven bearish sentiment, even neutral or slightly positive news fails to lift markets. Selling is indiscriminate. These periods often create the best buying opportunities for contrarian traders — particularly when VIX is extremely elevated.
• Sentiment shifts create the biggest moves: The most violent market moves occur not when news is bad, but when sentiment shifts from bullish to bearish (or vice versa). The 2022 equity sell-off began not when inflation was highest, but when the sentiment shifted from "transitory" to "persistent."

Using sentiment alongside news: a practical framework

Integrating sentiment data with real-time news creates a powerful analytical edge:

• When sentiment is extremely bearish AND news begins to improve → strongest buy signals
• When sentiment is extremely bullish AND news begins to disappoint → strongest sell signals
• When news and sentiment align (bullish news + bullish sentiment) → trend continuation, not reversal
• When news and sentiment diverge (bearish news + market fails to fall) → the trend has more fuel, don't fight it