ET Online | Updated: 09 Sep 2026, 04:42 PM ISTWhy was CAS introduced in the first place & why has it made the final 20 minutes so volatile?From massive Sensex swings to SEBI scrutiny, we break down how the closing auction works, what’s going wrong, and what traders should watch next. Show more Show lessRead more onRelated Videos02:4403:2102:4102:1203:0202:1104:1502:1002:3408:1401:4902:1904:4202:2301:2002:2023:1801:2801:4901:3505:3302:5410:4502:0603:1603:0417:4708:4302:5603:5402:2304:0601:4606:1403:0101:25