Put-Call Ratio (PCR) in Crypto Options Explained

The put-call ratio (PCR) in crypto options is the number of put contracts divided by the number of call contracts, counted either as contracts traded in a period (volume PCR) or as contracts still open (open interest PCR). A reading below 1 means more calls than puts, a tilt towards bullish bets; a reading above 1 means more puts, a sign of fear or hedging. Before the 25 September 2026 quarterly expiry, the Bitcoin put-call ratio on Deribit was about 0.7, or roughly 1.4 calls for every put.

How the put-call ratio is calculated

A call option gains value if the price rises above its strike; a put gains value if the price falls below it. The put-call ratio simply compares how many of each exist or change hands. There are two main versions, and they answer different questions:

Version	Formula	What it tells you	Best used for
Open interest PCR	Put open interest ÷ call open interest	Positions still open, built up over days or weeks	Reading positioning into an expiry
Volume PCR	Puts traded ÷ calls traded in a period	What traders did today or this hour	Spotting sudden hedging or panic

Open interest is the number of contracts that are still open, not yet closed or expired. If that term is new, read our guide to open interest in crypto first, because the open interest PCR is built directly from it.

Before you compare two numbers, check their scope. A PCR can cover a single expiry (for example, this Friday's ETH options), all expiries together, or only strikes near the current price. It can also cover one exchange or several. Two correct PCRs for the same coin on the same day can differ widely because they count different contracts.

Worked example: reading an ETH option chain

The numbers below are illustrative only, made up to show the method. Suppose the Friday ETH expiry on one platform shows these totals when you add up every strike:

Illustrative ETH expiry	Calls	Puts	Put-call ratio
Open interest (contracts)	40,000	28,000	28,000 ÷ 40,000 = 0.70
Volume today (contracts)	12,000	15,000	15,000 ÷ 12,000 = 1.25

The open interest PCR of 0.70 says the positions built up over the week lean bullish: about 1.43 calls are open for every put. The volume PCR of 1.25 says that today, more puts changed hands than calls. Perhaps ether dipped and traders rushed to buy protection, or put sellers were busy collecting premium. Taken together, the picture is bullish positioning on a nervous day.

The ratio is the same whether you count contracts or their notional value, as long as both sides are on the same coin. If each illustrative contract covered 1 ETH, then at about ₹2.58 lakh per ether on 1 October 2026, the 40,000 calls would cover about ₹1,031 crore of ETH and the 28,000 puts about ₹722 crore. Divide one by the other and you are back at 0.70. The live Ethereum price in INR is ₹257,383 right now.

How to read high and low PCR values

There is no universal "correct" level. The table below shows how open interest PCR readings are commonly interpreted, and what to watch for:

Open interest PCR	What it shows	Common reading	Watch out for
Below 0.5	Calls far outnumber puts	Strong optimism, crowded upside bets	Crowded call positions can unwind fast if the price stalls
0.5 to 0.8	Clearly more calls than puts	Mildly bullish tilt	In crypto this range is often ordinary, not a signal
0.8 to 1.2	Roughly balanced	Neutral, with hedging on both sides	Look at which strikes hold the open interest
Above 1.2	More puts than calls	Fear or heavy hedging	Contrarians watch for a bottom, but fear can last

In crypto, the ratio has often sat below 1 because many traders use calls to bet on rallies. That is why a reading of 0.7 on bitcoin is not, by itself, a strong bullish signal. What matters is how today's number compares with the same coin's recent range.

Indian traders who learned PCR on Nifty option chains may have been taught the opposite rule: a Nifty PCR above 1 is often read as bullish, on the assumption that the heavy put open interest comes from sellers who expect the index to hold. That reading is an assumption about who wrote the puts, not something the ratio itself shows. Know which lens you are using before you act on a number.

Using the put-call ratio as a contrarian signal

Many traders treat extreme readings as a sign that the crowd has gone too far. After a sharp fall, everyone rushes to buy puts, the PCR jumps, and protection becomes expensive. By then much of the selling may be done. After a long rally, a very low PCR shows traders piling into calls, which can mean optimism is already priced in.

To use it this way:

1. Track the open interest PCR for one coin and one venue daily for a few weeks, so you know its normal range.
2. Flag readings well outside that range, not small moves inside it.
3. Check whether the price, funding rates on perpetual futures and the Fear and Greed Index tell the same story.
4. Treat an extreme as a warning to size positions carefully, not as a precise entry point. Fear can stay extreme for days while the price keeps falling.

PCR, open interest and max pain together

The put-call ratio is a single summary number. Two other expiry tools add the detail it lacks:

• Open interest by strike shows where the calls and puts sit. A large block of calls at one strike can act as a short-term ceiling or magnet near expiry.
• Max pain is the price at which the most options would expire worthless. Our options expiry and max pain explainer shows how it is worked out.

A real case: ahead of the 25 September 2026 quarterly expiry, Deribit's Bitcoin options showed a put-call ratio of about 0.7, with roughly $9.4 billion of calls against about $6.4 billion of puts, and max pain at $75,000 while bitcoin traded in the mid-$80,000s. The ratio said traders leaned bullish; max pain said option sellers would have done best far lower. Neither told you what the price would do next. Our report on the $18 billion September quarterly expiry has the full picture.

The limits of the put-call ratio

• It does not show who bought and who sold. Every open put has a buyer and a seller. A rising put count can mean fear (buyers) or confidence (sellers collecting premium), and the ratio cannot tell them apart.
• Hedges distort it. Long-term holders often buy puts to protect their coins, or sell calls against them for income. Both change the ratio without any change in their view of the market.
• Scope changes the answer. Readings published for the same 25 September 2026 Bitcoin expiry ranged from about 0.5 to 0.7, depending on when they were taken and which contracts they covered.
• One exchange is not the whole market. Crypto options also trade on other exchanges and, for bitcoin and ether, as options on US-listed funds. A single venue shows only part of the picture.
• Short-dated options add noise. Daily options can swing the volume PCR within hours.
• Bigger forces usually win. Spot and futures trading, fund flows and interest-rate news move prices far more than option positioning.

Where Indian traders can see PCR data

Few Indian apps print a single "PCR" figure, but several give you the numbers to work it out for bitcoin and ether:

• Delta Exchange India has an options analytics page that charts open interest by strike, open interest by expiry, and put and call volume. See our Delta Exchange review.
• Pi42 offers BTC and ETH options with an option chain that has a volume and open interest view. See our Pi42 review.
• Global expiry figures quoted in the news usually come from Deribit, the largest crypto options exchange, and cover only its own contracts.

To calculate it yourself from any option chain:

1. Open the option chain and choose one expiry, for example this Friday's.
2. Add up the open interest for every call strike, then for every put strike.
3. Divide the put total by the call total. That is your open interest PCR.
4. Repeat with the volume column to get the volume PCR.
5. Note the time and repeat at the same time each day, so you compare like with like.

Expiry timing matters too, because open interest for a contract drops to zero once it settles. Our Bitcoin options expiry calendar has live countdowns, the BTC expiry time guide covers each platform, and our guide to ETH options expiry time in India does the same for ether.

Rules and risks for Indians who trade options

Crypto options are legal to trade in India on platforms registered with FIU-IND (check our FIU-registered exchanges list), but they are not regulated by SEBI, so there is no investor-protection scheme. Buyers often lose the whole premium, and sellers can lose far more than the premium they collect. The tax treatment of crypto derivatives is not settled: some treat profits as virtual digital asset income at 30% plus cess, others as business income. Our guide to crypto futures and options legality and tax sets out both views, and our comparison of the best crypto options trading apps in India covers fees. Bitcoin is ₹8,012,346 right now; see the Bitcoin price in INR before you pick a strike.

FAQ

What is a good put-call ratio in crypto?

There is no single good level. Many traders read below 0.7 as bullish and above 1 as bearish or defensive, but crypto ratios often sit below 1, so compare today's reading with the same coin's recent range.

Is a high put-call ratio bullish or bearish?

On its face a high PCR shows fear or hedging, which is bearish. Contrarian traders read extreme highs as a possible sign that selling is overdone, so the answer depends on how extreme the reading is and what the price is doing.

What is the difference between volume PCR and open interest PCR?

Volume PCR compares puts and calls traded in a period, so it shows today's mood. Open interest PCR compares contracts still open, so it shows positioning built up over days or weeks.

What was the Bitcoin put-call ratio at the September 2026 expiry?

Before the 25 September 2026 quarterly expiry, Deribit's Bitcoin put-call ratio was about 0.7, with roughly 1.4 calls open for every put. The figure changes every hour, so check a live option chain for today's number.

Where can I see the put-call ratio for ETH options in India?

Delta Exchange India's options analytics page shows put and call volume and open interest by strike and expiry, and Pi42's option chain has a volume and open interest view. Add up the puts and calls and divide to get the ratio.

Does the put-call ratio predict the crypto price?

No. It describes how options traders are positioned, and it cannot tell buyers from sellers. Use it with open interest, max pain, funding rates and price action, never on its own.

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This article is AI-assisted, educational and general in nature. It is not financial advice and never a guarantee of profit. Every trade is at your own risk on your own exchange. See our risk disclosure and editorial policy.