My "better clients" try to use 50% or 100% of the overnight margins even when day trading even though we offer as low as $500 for day trading.
%%I remember when Silver futures crossed $45 in 2011, and the CME increased margin rates....silver prices collapsed a couple of days later.
They raised the margin because they intuitively sense there will be a BIG selloff in the coming days. I guess they took notice of my memo.