What Is Market Sentiment?

Market sentiment measures the collective mood and attitude of investors toward markets or specific assets. It's the emotional pulse of the market — fear drives selling, greed drives buying, and extremes signal potential reversals.

Why Sentiment Matters

• Markets often overshoot in both directions due to herd behavior
• Sentiment extremes are contrarian indicators (buy when others are fearful)
• Sentiment shifts often precede price moves (leading indicator)
• Combining sentiment with technical/fundamental analysis increases edge

The Sentiment Spectrum

• Extreme Fear (<20/100): Panic selling, capitulation → historically bullish contrarian signal
• Fear (20-40): Pessimism, cautious positioning → looking for bottoms
• Neutral (40-60): Balanced, no strong conviction either way
• Greed (60-80): Optimism, rising prices → market getting extended
• Extreme Greed (>80/100): Euphoria, FOMO → historically bearish contrarian signal

Key Sentiment Indicators

Fear & Greed Index (CNN)

Composite of 7 factors:

• Stock price momentum (S&P 500 vs. 125-day MA)
• Stock price strength (52-week highs vs. lows)
• Stock price breadth (advancing vs. declining volume)
• Put/Call ratio (options sentiment)
• Market volatility (VIX)
• Safe haven demand (bonds vs. stocks)
• Junk bond demand (yield spreads)

VIX (Volatility Index)

• Called the "fear gauge" — measures expected 30-day S&P 500 volatility
• VIX <15: Complacency (low fear, potential downside risk)
• VIX 15-25: Normal range
• VIX 25-35: Elevated fear (market stress)
• VIX >35: Extreme fear (panic, often marks bottoms)
• Contrarian use: Buy equities when VIX spikes above 35

Put/Call Ratio

• Ratio of put options volume to call options volume
• P/C >1.2: Bearish sentiment extreme (contrarian bullish)
• P/C <0.6: Bullish sentiment extreme (contrarian bearish)
• P/C 0.7-1.0: Normal range

AAII Investor Sentiment Survey

• Weekly poll of individual investors (bullish/bearish/neutral)
• Extreme readings are contrarian:

- Bullish >60%: Market often declines in following weeks - Bearish >50%: Market often rallies in following weeks

• Most reliable when combined with other sentiment measures

Fund Flow Data

• Money flowing INTO equity funds: Retail buying (potentially late-cycle)
• Money flowing INTO money market funds: Cash hoarding (fear)
• Record equity inflows often mark tops; record outflows mark bottoms

Social Media Sentiment Analysis

Platforms That Matter for Markets

• Twitter/X: Real-time reaction to news, FinTwit community
• Reddit: r/WallStreetBets, r/cryptocurrency, r/stocks (retail momentum)
• StockTwits: Dedicated trading social platform (ticker-specific)
• YouTube/TikTok: Retail education and hype (lagging indicator)
• Telegram: Crypto group sentiment (pump signals)

NLP Sentiment Scoring

AI systems like SignalWhisper analyze social media using:

• Natural Language Processing: Classify posts as bullish/bearish/neutral
• Volume tracking: Sudden spikes in mentions = attention catalyst
• Influencer weighting: Posts from verified accounts carry more weight
• Emotion detection: Fear, excitement, anger, uncertainty classification
• Trend analysis: Rising mentions + positive sentiment = momentum

How to Use Social Signals

• Volume spike + price flat = attention building, move likely coming
• Extreme bullish social + price at resistance = potential reversal (sell the hype)
• Extreme bearish social + price at support = potential bounce (buy the fear)
• Declining mentions = narrative dying (don't fight the tide)

Contrarian Trading with Sentiment

The Contrarian Philosophy

"Be fearful when others are greedy, and greedy when others are fearful." — Warren Buffett

Markets overshoot because of herd behavior. When everyone is bullish:

• Most buyers have already bought (who's left to buy?)
• Positions are crowded (any negative catalyst triggers cascade selling)
• Complacency leads to poor risk management

Contrarian Entry Rules

• Wait for extreme sentiment readings (not just slightly bearish/bullish)
• Require price confirmation (don't fight momentum; wait for reversal candle)
• Use time filter (extreme sentiment must persist 3+ days)
• Combine with technical setup (oversold + extreme fear + support = high probability)
• Size appropriately (contrarian trades have lower win rate but higher R:R)

When Contrarian Fails

Contrarian doesn't always work:

• Strong trends can remain "extreme" for months (buying dips in bear market fails)
• Fundamental deterioration can justify prolonged fear
• Key: Only trade contrarian at technical support/resistance with confirmation

AI-Powered Sentiment Analysis

How SignalWhisper Uses Sentiment

Our AI processes sentiment from:

• 50,000+ tweets/day mentioning tracked tickers
• Reddit post and comment sentiment in real-time
• News headline sentiment from 200+ sources
• Congressional hearing transcripts (policy sentiment)
• Earnings call tone analysis (management confidence/concern)
• Options market sentiment (put/call ratios, skew)

Sentiment Signals We Generate

• Sentiment divergence: Price falling but sentiment improving → bullish signal
• Extreme fear + technical support: High-probability long entry
• Extreme greed + technical resistance: Reduce exposure or short
• Sudden sentiment shift: Narrative change detected (new catalyst)
• Sector sentiment rotation: Capital flowing between sectors based on mood

Frequently Asked Questions