I noticed ES Jun 21 weekly option seems follow ES June. to my impression, ES June already ceased to trade in the middle of June. yesterday I saw 1585/1590 june 21 ES put cheap, since I monitor september September ES. made nice profit on 1585/1590 puts. but whenI turn on my computer this morning, I feel howdangerous it is, they droped to almost zero. that puzzled me. it still follow June ES?