BTC · Deribit · live

Premium decay heatmap

Spot — · Nearest expiry —
As of — UTC
Percent change in Deribit mark price (coin-margined) since UTC-day open. Green = premium decayed (seller-friendly); red = premium expanded. Aggregated across expiries at each strike — grid shows ±10% moneyness band. ETH from 2026-08-12 UTC only.
Decay since UTC-day open
Premium up Decayed

Why this matters for crypto options

Deribit premiums are coin-margined — decay shows up in BTC/ETH terms, not INR. Tracking mark-price change since UTC-day open highlights where writers are harvesting theta through the 24/7 session.

How to read the grid

  • Green (+) — mark price fell vs UTC-day open (decay).
  • Red (−) — mark price rose (IV expansion or intrinsic gain).
  • ATM row highlighted — usually the richest time value.

Methodology

Mark price from archived Deribit snapshots; open = first snapshot on the UTC calendar day. Same strike may combine multiple expiries — dominant mark per side from highest-OI expiry leg. See OI analysis and index heatmap for comparison.

Mark price vs last trade?

Deribit archive stores mark price, not last trade — smoother for illiquid strikes, standard for IV/Greeks on Deribit.

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