500 ES contracts for 50 points = $1,250,00
one tick on ES 500 contract is $6,250.00 margin required on IB will be 1,237,500.00 ($2,475 per contract Intraday Maintenance) to open the position he will need $1,547,000.00 ($3,094.00 Intraday Initial).
So...
He needs to pick the bottom...