Nifty Put-Call Ratio Extremes
The Nifty Put-Call Ratio (PCR) measured the total open interest or volume of put options relative to call options; historically, a PCR above 1.5 was associated with excessive bearish positioning that sometimes preceded market recoveries, while a PCR below 0.7 was associated with complacency that sometimes preceded corrections.
The Put-Call Ratio was computed daily by NSE and published in the options market data section. Two variants were tracked: the volume-based PCR, which measured the day's put volume divided by call volume, and the open interest-based PCR, which measured cumulative put open interest divided by cumulative call open interest across all Nifty strikes and expiries. The open interest PCR was considered more meaningful as a sentiment indicator because it reflected committed positions rather than intraday activity.
A PCR significantly above 1.0 indicated that more put options were outstanding than call options, suggesting that participants had positioned heavily on the downside. In a contrarian interpretation commonly used by Indian options traders, an extremely high PCR — readings above 1.4 or 1.5 — signalled that bearish sentiment had become crowded. Historically, such extremes occurred near market bottoms, as the last wave of bearish participants had already bought protection. With little incremental selling pressure left to be expressed through puts, the market was potentially positioned for a bounce.
Conversely, a PCR below 0.7-0.8 indicated that call options significantly outnumbered puts, suggesting broad bullish positioning. Contrarian interpretation associated this with complacency — the market had rallied to a point where most participants were positioned for further gains with limited hedging. Such readings occasionally preceded sharp corrections when the bullish consensus was disappointed.
Historical analysis of Indian markets between 2015 and 2023 showed that PCR extremes had moderate predictive power as a sentiment timing tool, but were far from infallible. The ratio worked better as a 'crowd positioning' indicator than as a standalone signal. It was most useful when combined with other indicators: an extremely high PCR accompanied by oversold technical readings and low India VIX was historically a stronger reversal setup than a high PCR in isolation during a continued volatile sell-off.
Strikes-wise PCR analysis was also practised, examining the put-call open interest distribution across specific strikes to identify where large option writers had positioned, which served as informal support and resistance reference levels.