Sentiment Indicators

  • VIX: Fear index
  • Put-Call Ratio: Bull/bear balance
  • Advance-Decline: Market breadth
  • Margin debt: Leverage levels

Extreme Readings

  • High VIX: Fear, potential bottom
  • Low VIX: Complacency, potential top
  • High PCR: Bullish sentiment
  • Low PCR: Bearish sentiment

Contrarian Approach

Extreme sentiment often precedes reversals. Buy fear, sell greed.

Options Application

  • High fear: Buy cheap puts or straddles
  • High greed: Sell expensive options

What Market Sentiment Measures

Sentiment analysis estimates whether market participants lean bullish or bearish, and how strongly. It is distinct from fundamentals and technicals: a stock can be fundamentally cheap, technically oversold, and still fall because sentiment is deeply negative. Because option premiums are priced partly from fear, sentiment is the layer that most directly connects crowd emotion to the option chain.

Positioning-Based Sentiment

  • Put/Call ratio: open interest in puts divided by calls. A very low ratio signals complacency; a very high one signals fear, which contrarians treat as a buying signal.
  • VIX and India VIX: implied volatility as a fear gauge: spiking VIX reflects hedging demand, often near short-term bottoms.
  • FII/DII flows: net derivative positions of foreign and domestic institutions are reported daily and shift with institutional conviction.

Survey and Behavioural Indicators

Retail participation proxies like brokerage client additions and the ratio of new option contracts to total population add a behavioural dimension. Weekly survey data and the percentage of advisors recommending stocks are classic contrarian markers: exceptional optimism coincides with crowded longs, exceptional pessimism with crowded shorts.

Quantitative Sentiment From Text

Natural language processing on news headlines and brokerage comments assigns a polarity score to market-related text. A feed of the top financial headlines scored daily, averaged over a week, gives a sentiment index that reliably leads price by a few sessions during sustained news cycles. The technique works best on consolidated sources rather than retail social chatter, because institutional phrasing carries more marketing weight per word.

Turning Sentiment Into an Options Trade

  1. Track the put/call ratio and India VIX on a daily chart.
  2. Define contrarian bands at historically meaningful extremes, e.g. VIX above the 90th percentile of the last year.
  3. Enter long volatility when sentiment is stretched one way but price structure has not confirmed.
  4. Exit when the crowd flips to the other extreme; that is when the option premium has already repriced.

Mixing Sentiment With Technical Confirmation

Sentiment scores are leading by nature and unreliable on their own. Require a close above or below a reference moving average as confirmation before acting, and size positions as a fraction of the signal's conviction rather than risking full premium on a survey reading. If the sentiment signal and the technical level disagree, stand aside; the market is in the rare state where crowd emotion and structure are unaligned.

Contrarian at Extremes Only

Sentiment indicators gain power exactly where they are least comfortable: at extremes.

  • Bullish consensus at record levels (polls, fund flows, option activity) marks crowd positioning that later pays the reversion; retail Korean data's best days were the ones that felt euphoric.
  • Bearish capitulation (V-shaped despair in derivatives flows) has set most Indian decade-lows; the contrarian buy at the record-fear print is the trade history keeps handing to the patient.
  • The discipline: act at extreme percentiles (90th/10th), never at middling sentiment; the middle of the distribution is where sentiment is noise and price is boss.

The Derivatives Positioning Read

India's derivatives ledger is a published sentiment instrument:

  • Put-to-call ratio (PCR) on Nifty options: rising above 1.3 flags crowded puts and exhausted fear, a contrarian bottom signal for premium sellers.
  • FII and DII positions in index futures: sustained short FII index futures with heavy DII buying is a crowded-against-strong-holding divergence worth respecting.
  • Volatility skew: when OTM puts price much richer than calls for weeks, insurance is crowded, not underpriced; the pattern often marks late-stage falls, not fresh ones.

Quantitative Sentiment From Text

News-sentiment feeds add value only when the scoring is calibrated to your event set:

  • Build a lexicon fine-tuned on Indian corporate vocabulary (rate title versions of "city", "budget", "commentary") rather than generic English sentiment models.
  • Decay the score: a headline's edge lasts hours to days; a rolling 3-day decay-weighted score beats a raw event-count daily score in backtests.
  • Cross-check manual: spend 30 minutes a week reading what the score said versus what the tape did; the calibration loop is the entire accuracy of a text system.

Blending Sentiment With Technical Confirmation

Sentiment is a gun with one bullet; technicals provide the trigger:

  • Only fire the contrarian trade when price confirms at a defined technical level (support retest, RSI divergence, trendline reclaim).
  • If sentiment screams capitulation but price breaks the level instead, the sentiment read was early, and early is the same as wrong with options decay.
  • The options overlay: express contrarian conviction through defined-risk spreads or calendars rather than naked longs, because the extreme is often the dawn of a further move.

Paper-Trade Sentiment Before Capital

Sentiment systems are slow, and their mistakes are slow too: worth a paper-trial first:

  1. Log the extreme readings for six months and their subsequent 10-day outcomes before any live rupee.
  2. Measure precision at threshold: a 90th-percentile contrarian signal that pays 40% of the time is a coin flip with a story.
  3. After live, keep the same ledger: extreme date, signal, bias, outcome; thirty rows of that table make the sentiment method transparent, accountable and improvable.

Sentiment analysis is a crowd-accounting discipline: read the positioning ledger (PCR, FII/DII, skew), act at extremes, confirm with technicals and price-defined structures, and paper-trade the threshold before funding it. The market's mood is a real signal, but only in the moments emotional enough to give it predictive power.