ETH options expiring 11SEP26, 4 days out, with the forward at $2,499. Open interest is $120M in calls and $144M in puts, put/call 1.20, and max pain is $2,450. At-the-money implied volatility is 44.4%. Where a strike is listed on both venues the cheaper ask and richer bid are visible side by side; the arb scanner flags any gap that exceeds fees. Strikes shown are within 60% of the forward. All ETH expiries.