Thermography

Strike OI time series

Open interest time series for a single strike: call OI and put OI in USD at each 10-minute snapshot. Use for tracking OI buildup or unwind at specific strikes you identified in the volume heatmap. Source table: deribit_options_gex_strikes.

GET/v1/thermography/strike-oiproalpha

Query Parameters

coinstringrequired

Underlying asset.

e.g.BTCETHSOL

strikenumberrequired

Strike price to query.

e.g.100000105000

timeRangestringoptional

Lookback window. Default: 48H.

e.g.48H72H96H120H240H

limitintegeroptional

Max rows. Default 5000.

e.g.500

Response Schema

Fields marked pro require a Pro subscription. Fields marked alpha require Alpha.

Field	Type	Tier	Description
`timestamp`	`datetime`	pro	Snapshot time in UTC. 10-minute resolution.
`call_oi_usd`	`float`	pro	Total call open interest in USD at this strike.
`put_oi_usd`	`float`	pro	Total put open interest in USD at this strike.

Suggested Calculations

Not included in the API response. Compute these client-side from the fields above. Formulas and context provided.

FieldTypeInputsexpand all

▶oi_deltafloatclient-sideIs OI building or unwinding at this strike?expand

Is OI building or unwinding at this strike?

First difference of (call_oi_usd + put_oi_usd) between consecutive timestamps. Positive = new positions opening. Negative = positions closing. Sustained positive delta at a strike far from spot suggests conviction positioning. Sudden negative delta near expiry = gamma unpin event.

Inputscall_oi_usdput_oi_usd

OI change between snapshots

\Delta OI = (C_{t} + P_{t}) - (C_{t-1} + P_{t-1})

▶put_call_oi_ratiofloatclient-sideDirectional lean of open interest at this strikeexpand

Directional lean of open interest at this strike

put_oi_usd / call_oi_usd. Above 1 = more put OI (bearish lean or hedging). Below 1 = more call OI (bullish lean). Track the ratio over time: a rising ratio at a strike below spot means hedging demand is increasing. A falling ratio at a strike above spot means call writers are closing positions (potentially removing a ceiling).

Inputscall_oi_usdput_oi_usd

Put/call OI ratio

\text{PCR} = \frac{P_{OI}}{C_{OI}}

Range0 to unbounded. 1.0 = balanced.