The National Stock Exchange saw ₹16,613 crore in volume during its closing auction on Thursday, the second-highest ever. This spike was driven by global passive funds adjusting portfolios for FTSE index changes. Investors should note that similar volume shifts are common during index rebalancing, with the Nifty index review expected at the end of the month.
The National Stock Exchange (NSE) experienced a major surge in trading activity during its closing auction session on Thursday, as global institutional investors adjusted their holdings to match revised FTSE index weightings. The closing auction, which takes place in the final minutes of the trading day, saw a turnover of ₹16,613 crore. This represents the second-highest trading volume recorded since the exchange introduced the closing auction facility.
Why Passive Index Changes Drive Volumes
This spike in trading volume occurs because of passive investment funds. These funds are designed to track specific indices, such as those provided by FTSE or MSCI. When an index provider updates the companies included in an index or changes their weightings, passive funds must trade their shares to match the new index composition. Because these funds often manage large amounts of capital, their mandatory buying or selling at the close of the day can lead to significant jumps in volume.
Comparing Scale and Scope
While the ₹16,613 crore figure is large, it remains well below the record volume set during the MSCI index rebalancing on August 31. That event saw turnover reach ₹39,718 crore in a single session. One important constraint for investors to understand is that the closing auction facility on the NSE is primarily restricted to securities that are part of the futures and options (F&O) segment. This means the immediate impact of these index rebalancing events is concentrated in these specific stocks rather than across the entire market.
Upcoming Market Events
Looking ahead, the market is preparing for the scheduled Nifty index rebalancing at the end of this month. Similar to the FTSE and MSCI events, this is expected to trigger another period of higher-than-usual trading volumes and price volatility. For market participants, these rebalancing periods often serve as a reminder of the growing influence of global index providers on Indian market liquidity and trading patterns.