Business news · Policy & Regulation · 06 Oct 2026
A Reuters report, cited by Business Today, says SEBI plans to stop using the closing auction session (CAS), introduced on August 3 for stocks with futures and options, to set derivatives settlement prices for at least a year. Settlement would go back to the volume-weighted average price of the last 30 minutes of trading, while the cash market keeps the auction; the change may come this month. SEBI had received about 20,000 comments on its September 12 consultation paper. In early trade BSE rose 3.55%, Angel One 3.5%, Motilal Oswal 3.1%, Groww 2.25% and Nuvama 1.85%.
Exchanges and brokers earn most of their transaction income from derivatives, so the method that fixes the expiry-day settlement price feeds straight into volumes. Under CAS, trading bunched into the final minutes: average traded value per minute on NSE between 3:20 and 3:30 pm rose to Rs 189.82 crore from Rs 126.31 crore before it, and expiry-day swings drew complaints. A return to the 30-minute average removes that concentration for BSE, unlisted NSE and discount brokers such as Angel One and Groww. The report is unconfirmed by SEBI, and nothing changes for cash-market closing prices.
Reported by Business Today — “NSE, Groww, BSE, Angel One, MOFSL, Nuvama shares rally after SEBI CAS rollback report” ↗ on 06 Oct 2026.
NSE stocks, from the last close on or before 06 Oct 2026 to the close on 16 Oct 2026.
| Sector | Stocks | Median move | Up | vs all stocks |
|---|---|---|---|---|
| Financial Services | 125 | -0.0% | 62 of 125 | +1.4 pts |
| All tracked stocks | 804 | -1.4% | 284 of 804 | — |
| Company | Then | Now | Move |
|---|---|---|---|
| Angel One Ltd. ANGELONE | ₹295 | ₹300 | +1.7% |
| BSE Ltd. BSE | ₹3,305 | ₹3,363 | +1.8% |
| Billionbrains Garage Ventures Ltd. GROWW | ₹193.19 | ₹200.85 | +4.0% |
| Motilal Oswal Financial Services Ltd. MOTILALOFS | ₹1,081.15 | ₹1,057.6 | -2.2% |
| Nuvama Wealth Management Ltd. NUVAMA | ₹1,838.8 | ₹1,706.1 | -7.2% |
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