SEBI’s Closing Auction Fight Raises a Bigger Question: Is India’s Market Losing Liquidity at the Close?
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On August 27, 2026 India’s Sensex plunged more than 2,000 points within minutes during SEBI’s newly launched Closing Auction Session (CAS) on the monthly derivatives expiry before recovering sharply. Thin liquidity and the F&O expiry were cited as amplifiers, raising fresh questions about liquidity and price discovery at the close that could also concern centralized exchanges (CEX), DEXs and crypto/DeFi markets. The episode increases scrutiny of SEBI’s CAS mechanism and broader market security and adoption implications.
Predictions Markets
See what traders are focused on
- Sensex plunged over 2,000 points in minutes during SEBI’s new CAS.
- Thin liquidity and derivatives expiry may have amplified the sharp swings.
- SEBI faces fresh questions over liquidity and price discovery in the CAS.
The final minutes of Thursday’s trading session turned unusually volatile for Indian investors, with the Sensex briefly plunging more than 2,000 points within minutes before recovering sharply. The move came during SEBI’s newly launched Closing Auction Session (CAS), putting the system under fresh scrutiny on a key derivatives expiry day.
What happened in India’s closing auction?
On August 27, 2026, the stock market of India saw an unusually sharp decline during the Closing Auction Session (CAS). The session marked the first monthly derivatives expiry since the CAS was introduced. During the session, the Sensex’s indicative price plunged by…
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