📊 Options Flow — BTC & ETH

Deribit put/call ratio, implied volatility & large block trades · Updated 21 Aug 2026 12:27 UTC

BTC Options Flow

Spot: $76,761

BULLISH

PUT/CALL OI

0.57

<0.6 bull · >1.2 bear

PUT/CALL VOL

0.62

volume-weighted

ATM IMPLIED VOL

47.6%

spike >80.0% = big move

CALL OI

246,516

PUT OI: 140,166

P/C Ratio (24h)

ATM IV (24h)

Large Block Trades

Instrument	Side	Type	Size	Strike · Expiry
BTC-28AUG26-79000-C	SELL	CALL	200 BTC	$79,000 · 28AUG26
BTC-28AUG26-82000-C	BUY	CALL	200 BTC	$82,000 · 28AUG26

ETH Options Flow

Spot: $2,380

BULLISH

PUT/CALL OI

0.53

<0.6 bull · >1.2 bear

PUT/CALL VOL

0.66

volume-weighted

ATM IMPLIED VOL

60.4%

spike >80.0% = big move

CALL OI

1,119,597

PUT OI: 595,646

P/C Ratio (24h)

ATM IV (24h)

Large Block Trades

Instrument	Side	Type	Size	Strike · Expiry
ETH-25SEP26-2600-C	BUY	CALL	3000 ETH	$2,600 · 25SEP26
ETH-25SEP26-2900-C	SELL	CALL	3000 ETH	$2,900 · 25SEP26

Put/Call OI ratio = total put open interest ÷ call OI. Below 0.6 = bullish (calls dominate). Above 1.2 = bearish hedge buildup. ATM IV spike >80.0% = market pricing a big move. Large blocks = single trades ≥50 BTC or ≥500 ETH. Updates hourly.