What Is Put-Call Ratio?

The Put-Call Ratio (PCR) is a commonly used derivative indicator that compares the volume or open interest of put options to call options. It helps assess whether traders are leaning towards bearish or bullish expectations. 

A PCR above 1 generally indicates stronger bearish positioning, while a reading below 0.7 suggests bullish sentiment. By interpreting these levels, market participants attempt to gauge prevailing trends and potential reversals. Thus, before analysing options data, you must first understand what is put-call ratio and how it reflects market sentiment.

Key Takeaways 

• The Put-Call Ratio measures market sentiment by comparing total put options with total call options traded.

• PCR can be calculated using open interest data or the daily trading volume of options contracts.

• A PCR above 1 generally reflects bearish sentiment, while lower levels suggest bullish market expectations.

• Traders often analyse PCR alongside other technical indicators to interpret trends and potential reversals accurately.

Put-Call Ratio Meaning 

The Put-Call Ratio (PCR) compares the total number of traded or outstanding put options with call options during a specific period. It reflects how market participants are positioning themselves in the derivatives segment.

Put options are generally associated with downside protection or bearish expectations, while call options indicate bullish positioning. When put activity exceeds call activity, the ratio rises above 1. When call activity is higher, the ratio falls below 1.

Rather than predicting price direction directly, PCR highlights shifts in options positioning. Analysts often study its movement over time, along with historical averages and technical indicators, to interpret changes in market sentiment more accurately.

How to Calculate Put-Call Ratio?

The put-call ratio helps measure market sentiment by comparing the number of put and call options traded. Understanding its components is essential before diving into its calculation.

• Put Options: These give traders the right to sell assets at a pre-agreed price.

• Call Options: These provide traders the right to buy assets at the predetermined or specified strike price.

The calculation methods for the put-call ratio are as follows:

• Based on Open Interest

Divide the total open interest in put options by the open interest in call options for a specific day.

PCR (OI) = Put Open Interest / Call Open Interest

• Based on Trading Volume

Divide the total put trading volume by the total call trading volume on a particular day.

PCR (Volume) = Put Trading Volume / Call Trading Volume

Put volume reflects the total number of put options initiated, while call volume refers to the number of call options initiated within the same timeframe.

Example of Put-Call Ratio 

Consider Mr. Sharma, who uses the put-call ratio to analyse market sentiment. The following trades are recorded:

• Put Options Initiated: 900

• Call Options Initiated: 1500

• PCR = Put Options / Call Options = 900 / 1500 = 0.6

Since the ratio is less than 1, it shows more call options are being purchased, indicating bullish market sentiment. This suggests traders expect the prices to rise in the future.

Analysis of Put-Call Ratio 

To interpret the Put-Call Ratio correctly, it is important to understand how option activity influences sentiment readings. The following points explain how PCR values are analysed in practice.

Purpose of Options

• Put options help hedge against market downturns or speculate on declining prices.

• Call options hedge against market strength or bet on rising prices.

Understanding PCR values

• PCR Above 1: Indicates higher put volume than call volume, signalling bearish sentiment in the market.

• PCR Below 1: Suggests higher call volume than put volume, pointing towards bullish market trends.

Significance of PCR levels

• A PCR value of 1 is not a reliable measure of market sentiment, as call options are generally more popular than put options.

• For equity options, a PCR average of 0.7 is considered suitable for assessing market sentiment.

Interpretation of PCR

• A PCR above 0.7 or 1 reflects increased put option purchases, indicating bearish sentiment as investors hedge against potential sell-offs or speculate on falling prices.

• A PCR below 0.7, especially closer to 0.5, signals bullish sentiment, suggesting optimism for market gains.

Significance of Put-Call Ratio 

The Put-Call Ratio serves multiple analytical purposes in derivatives trading. Here are the key ways it helps investors interpret market sentiment and positioning trends.

• Gauge Market Sentiment

The Put-Call Ratio (PCR) is a useful indicator to understand the market sentiment at any given time. A high PCR suggests a bearish market, while a low PCR signals bullish tendencies. It helps investors assess whether the market is leaning towards optimism or pessimism, which can shape investment strategies.

• Predict Price Movements

PCR provides insights into potential price movements of underlying securities. By understanding whether more traders are buying puts or calls, investors can gauge whether the market is expecting price declines or advances, and align their trades accordingly.

• Contrarian Indicator

PCR is often seen as a contrarian indicator, suggesting that when sentiment is too bearish or too bullish, there may be a market reversal. This allows traders to avoid following the crowd and instead make more informed, strategic investment decisions.

• Analyse Trading Behaviour

The ratio also sheds light on the collective behaviour of market participants. By tracking the trend of PCR, traders can understand shifts in market mood, risk appetite, and investor outlook, which can guide future trading strategies.

• Evaluate Extremes

Extreme values of PCR can indicate an overbought or oversold market. For instance, a very high PCR may suggest that the market is overly bearish, possibly signaling an upcoming reversal. Conversely, a very low PCR could indicate excessive optimism, possibly leading to market corrections.

Limitations of Put-Call Ratio 

Despite its usefulness in assessing sentiment, the Put-Call Ratio has certain limitations. Here are some important constraints investors should consider before relying on it for decision-making.

• Does Not Capture All Market Sentiments

PCR does not always fully reflect the nuanced market sentiment. Other factors, such as economic events or news, can influence market sentiment, which PCR may not account for.

• Limited Availability for Stocks Without Options

Many stocks do not have available options, making it impossible to compute the PCR for those stocks. This limits the usefulness of PCR for a wide range of securities.

• Needs Supplementary Indicators

Although PCR is considered a contrarian indicator, relying solely on it without considering other market factors can be misleading. It's crucial to combine PCR with other technical indicators to make more informed decisions.

• Reading PCR Charts Accurately

Small shifts in the PCR can indicate significant market movements. Therefore, understanding how to read PCR charts correctly is essential for making accurate predictions.

• Risk and Goals

Investors should also consider their risk tolerance and financial goals before basing decisions purely on PCR. It should be used as part of a broader strategy that aligns with an investor's individual risk profile.

PCR - The Contrarian Indicator 

The put-call ratio is often interpreted as a contrarian indicator, especially when it reaches extreme levels. Instead of following prevailing market sentiment, traders analyse whether excessive optimism or pessimism may signal a potential reversal.

When the ratio rises significantly above its average range, it indicates heavy put buying. This may reflect heightened bearish sentiment, where market participants are either hedging against downside risk or speculating on falling prices. In such situations, some traders assess whether the market may be nearing a reversal if pessimism appears overstretched.

Conversely, when the ratio declines sharply below its typical range, it suggests aggressive call buying. This may indicate strong bullish sentiment. However, excessively low readings can sometimes signal overconfidence in rising prices.

It is important to note that there is no fixed threshold that guarantees a market top or bottom. The ratio is generally analysed relative to its historical range and alongside other technical or fundamental indicators to avoid misinterpretation.

What Is a Good Put/Call Ratio? 

The put/call ratio isn’t fixed and changes with the change in market moods. However, the market observes a ratio value of 0.7 as a compass.

A put/call ratio greater than 0.7 or exceeding one suggests a bearish trend is building in the market. Similarly, when the put/call ratio value declines below 0.7 and falls close to 0.5, it means traders are buying more calls than puts, an indication of an emerging bullish trend.

The put/call ratio reflects how the market perceives the recent earnings events of the company. While studying the put/call ratio, it is important to observe the value of both the numerator (put) and the denominator (call). Fewer exchanges of call options would push the value of the put/call ratio higher without any significant change in the volume of put options, which can give a false impression of market sentiment.