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A massive options wall is coming. Bitcoin and Ethereum contracts worth roughly $18.1 billion expire Friday, and the market is leaning hard on calls, according to Coinbase Markets. Put/call ratios are well below 1.0 for both assets — meaning traders are positioned, at least on paper, for prices to keep climbing.
The numbers are pretty lopsided. Bitcoin’s open-interest put/call ratio sits at 0.66, while its 24-hour volume ratio is even lower at 0.37. Ether’s ratios come in at 0.61 and 0.55, respectively. Those figures basically tell you the same story: call buyers have been dominant, and the market structure heading into Friday reflects that bullish lean. Whether spot prices actually cooperate is a different question entirely.
Bitcoin Calls Stack Up at $90K and $100K
Deribit data puts Bitcoin inverse-options open interest at $16.13 billion, with another $2.16 billion in Ether options set to expire the same day — numbers that line up close enough to Coinbase’s $18.1 billion estimate. On the Bitcoin side alone, call open interest totals $9.61 billion versus $6.52 billion in puts, giving a put/call ratio of 0.68 at a later snapshot.
The heaviest call concentration for Bitcoin sits at the $90,000 and $100,000 strikes. Bitcoin was trading between $86,149 and $86,791 on September 23, putting it roughly 4% below that $90,000 level. Not far, but not there either. The gap matters because market makers managing delta exposure near big strikes tend to hedge more aggressively as spot prices close in — and that hedging activity can itself move markets.
Ether’s call interest is spread more broadly, from $3,000 all the way up to $4,000. With Ether trading near $2,760, the $3,000 strike is about 8.7% above spot. That’s a meaningful distance with limited time. It doesn’t rule out a run at it, but it’s not the kind of gap that closes without real buying pressure.
The Rally That Built This Exposure
Both assets have moved sharply in recent weeks, and that’s a big part of why the notional open interest swelled. Bitcoin climbed from around $76,000 on September 17 to above $86,000, peaking at over $87,000 on September 21. Ether moved from roughly $2,416 on September 16 to over $2,805 on September 21.
That’s a big run in a short window. And as prices rise, the notional value of existing options contracts goes up too — which is probably part of why the combined open interest grew from $16.6 billion on September 15 to $18.1 billion by September 23. Coinbase made clear that the jump doesn’t necessarily mean a flood of new money came in. It can just reflect the higher value of underlying assets and shifts in contract quantities. Worth keeping in mind before reading too much into the headline number.
Analysts tracking the setup say continued buying is needed to push Bitcoin toward those high strikes. That’s not a controversial call — it’s just math. But the market has surprised before.
How Deribit’s Expiry Mechanics Work
Deribit runs quarterly expirations on the last Friday of March, June, September, and December, all settling at 08:00 UTC. The delivery price gets calculated using a time-weighted average of the Deribit index during the half-hour window before expiration. It’s a methodology designed to reduce the chance of any single large trade distorting the final settlement price.
Deribit’s footprint in this market is hard to overstate. The exchange handles around 85% of Bitcoin and Ethereum options activity globally, which makes its expiry events genuinely market-moving. August numbers give some sense of the scale: $56.13 billion in Bitcoin options turnover and $7.14 billion in Ether options turnover in a single month.
With that kind of dominance, Friday’s settlement isn’t just a bookkeeping event. Traders and market makers will be adjusting hedges as spot prices drift near the big strikes. Those adjustments can push prices around in ways that feel disconnected from fundamentals — and often are.
Positions can still shift before settlement. Traders close, roll, or add contracts right up until the last moment, so the final picture on open interest and put/call ratios probably won’t be clear until Friday morning. The $90,000 Bitcoin strike and $3,000 Ether strike remain the focal points, but there’s no mechanism that forces spot prices to meet them. Markets don’t owe anyone a clean expiry.
Bitcoin was trading at $86,791 at the top of Wednesday’s range.
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Frequently Asked Questions
What is the total value of Bitcoin and Ethereum options expiring Friday?
According to Coinbase Markets, approximately $18.1 billion in Bitcoin and Ethereum options are set to expire Friday, with Deribit data showing $16.13 billion in Bitcoin open interest and $2.16 billion in Ether options.
What are the key strike prices traders are watching for this expiry?
Bitcoin call open interest is heaviest at the $90,000 and $100,000 strikes, while Ether call interest is concentrated between $3,000 and $4,000, per Deribit data.
Why It Matters
The upcoming expiry of $18.1 billion in Bitcoin and Ethereum options could significantly influence market dynamics, particularly if the current bullish sentiment reflected in the low put/call ratios materializes into price movements. A predominance of call options suggests traders are betting on further price increases, which could fuel upward momentum if these positions are settled favorably. Additionally, the concentration of options activity may impact liquidity and volatility in the market as traders adjust their strategies in response to the expiry.
