📊 Options Flow — BTC & ETH

Deribit put/call ratio, implied volatility & large block trades · Updated 21 May 2026 16:00 UTC

BTC Options Flow

Spot: $77,478

NEUTRAL

PUT/CALL OI

0.68

<0.6 bull · >1.2 bear

PUT/CALL VOL

0.81

volume-weighted

ATM IMPLIED VOL

36.4%

spike >80.0% = big move

CALL OI

242,309

PUT OI: 164,381

P/C Ratio (24h)

ATM IV (24h)

Large Block Trades

Instrument	Side	Type	Size	Strike · Expiry
No large blocks in last scan

ETH Options Flow

Spot: $2,167

BULLISH

PUT/CALL OI

0.57

<0.6 bull · >1.2 bear

PUT/CALL VOL

1.09

volume-weighted

ATM IMPLIED VOL

47.5%

spike >80.0% = big move

CALL OI

1,468,129

PUT OI: 842,065

P/C Ratio (24h)

ATM IV (24h)

Large Block Trades

Instrument	Side	Type	Size	Strike · Expiry
No large blocks in last scan

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.