Since US spot ETFs listed options, Bitcoin and Ethereum have each sat under two independent options books: the crypto-native one, and the one on the ETF share. Both carry genuine open interest, both force genuine hedging, and both can be mapped. The mistake is treating a read of one as a read of the other.

Four things that differ

  • The underlying is not the same instrument. One is priced in coins, the other in ETF shares trading at a small fraction of a coin. A level from the share book is a share price, and it means nothing plotted against spot.
  • The multiplier differs. A US-listed equity option covers 100 shares. A crypto-native contract is typically one coin. Carry a multiplier across out of habit and the dollar-gamma is wrong by orders of magnitude.
  • The clock differs. The ETF book hedges during US market hours and then stops. The crypto book never stops. So the ETF map goes quiet overnight while spot keeps moving — and the gap between them at the open is not a signal, it is one book catching up to a market that never closed.
  • Expiry cadence differs. Crypto-native options expire daily at 08:00 UTC. Listed ETF options run the standard equity calendar. Pinning behaviour therefore repeats on completely different schedules.

The failure this produces

Worth naming precisely, because it is not a miscalculation. Rank the available books for a coin by size and the ETF book can come out on top purely because it is large. Make that the default book for the coin and every number rendered is arithmetically correct — and describes the wrong instrument. A share price appears beneath a coin header, carrying walls from a book that holds no coins.

Nothing is broken, which is what makes it dangerous. There is no error to notice: no gap in the chart, no null, no warning. It is correct for the wrong thing, and it reads as authoritative right up until somebody checks the magnitude of the price against what a coin actually costs.

Reading them together

Two books over one asset is genuinely useful — they are different participants expressing different views, and where their walls disagree is worth knowing. The requirement is only that each stays labelled as itself. A level is a level in a book; carrying it across is not conversion, it is a category error.

For the mechanic underneath both books, see Bitcoin gamma exposure explained.

The NoVo Crypto Market Map carries the ETF book beside the crypto one for BTC and ETH, each labelled by the book it comes from — and the crypto-native book is always the default for the coin.