The put/call ratio is rising. Are you starting to feel nervous and wondering if the market may be about to turn?
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Not necessarily. A rising put/call ratio does not directly mean the market is turning bearish. It is only a surface signal. The real motive behind it is what matters.
Step 1: Understand what this ratio actually measures
The put/call ratio is the trading volume or open interest of put options divided by the trading volume or open interest of call options. A higher ratio means put options are relatively more active.
But the problem is that a higher number can reflect two completely opposite market mindsets:
Bearish: Many investors are buying put options to bet on a decline. This is the "bearish" version you probably think of first.
Not expecting a drop: Many investors are selling put options to earn premium income. They are betting that prices will not fall. This is actually a more bullish type of trade.
History has shown typical cases of misreading this signal. Some analysts have pointed out that a rise in put option volume does not directly prove that market fear is increasing. If investors believe prices will not fall, they may sell put options to collect premium income. This activity also increases put option volume. Arbitrageurs in the options market may also add put option positions when they spot price deviation opportunities.
Step 2: Look at three sets of data to tell "real bearishness" from "fake bearishness"
The "rising put/call ratio" you see is only a summary number. It hides many different trading motives behind it. If you want to use it for judgment, you need to distinguish between these situations:
| Data pattern | Possible meaning | Signal strength |
|---|---|---|
| Open interest ratio rises, but volume ratio stays flat | Institutions are building structural hedging positions | Neutral to slightly informative; should be read together with term structure |
| Volume ratio spikes, but open interest ratio does not follow | Short-term speculative activity, possibly chasing moves | Weak signal, poor sustainability |
| Short-term option put/call ratio is clearly higher than long-term | Market demand for short-term hedging around upcoming events such as data releases | Event-driven; may fall back after the event passes |
| Put/call ratios across all maturities rise together | Systematic defensive sentiment | Worth caution, but still needs to be checked against the volatility smile shape |
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Step 3: Use a more complete framework to verify
When you see the put/call ratio rising, it is best to use the following steps to make your own judgment:
Distinguish between trading volume and open interest: Volume reflects short-term sentiment, while open interest reflects longer-term positioning. If put open interest keeps climbing, that is more noteworthy than a sudden spike in volume, because it means capital is steadily adding downside protection positions rather than making short-term speculative trades.
Check the volatility smile shape: If the put/call ratio rises and at the same time implied volatility for out-of-the-money puts is clearly higher than for out-of-the-money calls, meaning the left side of the volatility smile is visibly tilted upward, then the market is indeed paying more for downside protection. That makes the signal more credible.
Use historical extremes as a reference: The put/call ratio can also be watched as a contrarian indicator. Some market participants have noted that when the number of put contracts is very large and the put/call ratio reaches a high level, the market may be overly pessimistic. That could actually signal that sentiment is about to reverse, and it may even be a buying opportunity.
How to verify before acting: Next time you see the put/call ratio jump, do not make a directional call right away. Open the options data page and look at these indicators together: current-week option put/call ratio versus next-week option put/call ratio; out-of-the-money put IV versus out-of-the-money call IV; put volume versus put open interest. Only when the three dimensions point in the same direction, for example the short-term ratio is much higher than the long-term ratio, the left side of the IV curve is clearly tilted upward, and open interest is climbing at the same time, should you consider whether to hedge or adjust your position.
Next step: Go to Deribit's options data page and add both "Put/Call Ratio (Open Interest)" and "Put/Call Ratio (Volume)" to your watchlist. Watch them for two to three weeks in a row. You will find that volume and open interest often move out of sync. That will help you understand the real moves of "smart money" and "speculative money" better than any single number can.
