$16.6 billion in Bitcoin and Ethereum options is positioned for September’s quarterly expiry, Coinbase says.Bitcoin accounts for $14.73 billion notional, with 186,000 open contracts and 0.52 put-call ratio overall.Ethereum carries $1.92 billion notional, 756,100 open contracts, and a 0.57 put-call ratio for expiry.Bitcoin max pain is $72,000, while Ethereum’s corresponding level is $2,200 in Coinbase’s snapshot today.Ethereum’s largest call concentration is $3,000, not $30,000, with roughly 43,000 contracts outstanding there currently.