On the NSE, about 3 crore shares worth ₹3,440 crore were traded. The deliverable quantity ratio was 39.2% on the BSE and 34% on the NSE, lower than the usual 50% seen on both exchanges.
This took the combined traded value of Clean Science shares across both exchanges to ₹10,514 crore, which is equivalent to 86% of its ₹12,205-crore market capitalisation as of Thursday’s close.The volatility stemmed from a block trade gone wrong. Avendus Spark, one of the brokers authorised for the stake sale, placed sell orders for significantly more shares than intended. In a post-market statement, it admitted to an “execution error” and said it was being “remediated” under exchange regulations, with no impact on the seller.
According to bulk deal data, six promoter-group individuals sold 2.5 crore shares or 24% of the outstanding equity at ₹1,079 apiece, raising ₹2,750 crore. Key buyers included SBI Mutual Fund, Nippon India MF, Norges Bank, and Bajaj Allianz Life.
Exchange data further showed Avendus Spark both sold and bought 3.2 crore shares, equal to a 30.3% stake during the session, underscoring the scale of the “fat-finger” error. The stock witnessed sharp intraday swings, with an intraday high-low spread of ₹181, among the steepest in recent memory.
After touching an intraday low of ₹1,075.20, Clean Science shares closed at ₹1,148.55 on the BSE, down 2.8% on Thursday.
