SEBI's Derivatives Rule Boosts Groww Parent Billionbrains Shares

SEBI's decision to change the way index‑derivative settlement prices are calculated is expected to lift the share price of Groww's parent, Billionbrains Garage Ventures Ltd. The regulator will use the volume‑weighted average price from the last 30 minutes of continuous trading for settlement, effective Dec 7 2026, after a Sep 2026 consultation paper. This replaces the auction‑derived price used previously under the Closing Auction Session (CAS) and should curb volatility on expiry days while helping brokers whose order flow stays below pre‑CAS levels. Following the announcement, Groww stock rose about 1.5% on Friday, extending a two‑day uptrend. Analysts at Jefferies India recommended a BUY, saying the rule could improve broker earnings even though exchange turnover has already returned to pre‑CAS levels. Market expert Anuj Gupta listed three expected outcomes: a surge in derivative trading volume, higher brokerage fees, and brokers gaining more than exchanges. He noted that in Q2 2026, roughly 45% of Groww’s revenue came from equity derivatives, though that segment fell 14% quarter‑on‑quarter, a dip he linked to the earlier CAS structure. Gupta expects the new rule to reverse that decline and boost the balance sheet. Choice Broking’s executive director Sumeet Bagadia pointed to strong price support at ₹185 and a near‑term target of ₹230, advising current holders to keep the stock and fresh investors to buy on dips while maintaining the same stop‑loss. ## Context The rule aims to separate derivatives settlement from the closing‑auction price, a step taken after several months of monitoring erratic price moves on expiry days. Reducing that link is meant to give a more stable reference for contracts that settle daily.