Options Put-Call Open-Interest Ratios in Crypto: How to Read the Data With Price Context
The put-call open-interest ratio compares outstanding puts with outstanding calls. It changes slowly and reflects positioning that has built up over time.
Short answer
Put-call OI ratio = put OI ÷ call OI, for one expiry or all. With illustrative BTC OI of 1,100 BTC in puts and 1,150 BTC in calls, the ratio is ≈ 0.96. Unlike volume, OI accumulates, so the ratio moves slowly and resets at expiry as contracts settle. Read changes, not levels, against price: a rising ratio while price rises can mean holders are hedging gains. Compare by expiry, since near-dated and far-dated OI tell different stories.
Worked ratio
| Item | Value |
|---|---|
| Put OI | 1,100 BTC |
| Call OI | 1,150 BTC |
| Ratio | ≈ 0.96 |
| After expiry | Settled contracts drop out |
Price context
| Ratio change | With price | Possible reading |
|---|---|---|
| Rising | Rising | Hedging gains |
| Rising | Falling | Protection demand |
| Falling | Rising | Call positioning |
| Jump at expiry | — | Settlement effect |
Using it
Related: Options Put-Call Volume Ratios in Crypto: How to Read the Data With Price Context, Options Open Interest by Strike in Crypto: How to Read the Data With Price Context.
Check put-call oi ratio beside price in ChartsPod.
Open BTC/USDT in ChartsPodCompare by expiry, since near-dated and far-dated OI tell different stories.
Review Options Put-Call Open-Interest Ratios in Crypto with bar replay before using it live.
Open ChartsPod replayQuestions readers ask
How is the put-call OI ratio calculated?
Put OI divided by call OI.
Why does it jump at expiry?
Settled contracts leave the totals.
Is a high ratio bearish?
Not by itself.
Sources and methodology
Definitions follow Binance's USD-M market data documentation, Hyperliquid's funding documentation, TradingView's open-interest guide and Bybit's liquidation rules, read 17 October 2026. Examples are illustrative, not recorded market data.
- Deribit Insights: Maximum pain — max pain from OI at one expiry.
- Deribit Insights: Genesis Volatility options data guide — skew, smile, term structure.
- Deribit API: get_book_summary_by_currency — open interest units, mark_iv, underlying price, estimated delivery price.
- ChartsPod: product overview, pricing and FAQ — free terminal, venues, modules, no order placement; checked 17 Oct 2026.
This article explains research tools and workflows. It is not financial advice, does not recommend buying or selling any asset and does not predict prices. Crypto derivatives carry a risk of rapid and total loss of margin.
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