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4,000% options surge in 15 minutes shows wild side of new CAS system

The new closing-auction system in stock markets was meant to improve end-of-day prices. In the options market, however, the mechanism is producing extreme swings that are creating and wiping out gains in minutes.

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economictimes.indiatimes.com

cryptobriefing.com

timesofindia.indiatimes.com

thehindubusinessline.com

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4,000% options surge in 15 minutes shows wild side of new CAS system

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Timeline cronologica

martedì 25 agosto 2026·economictimes.indiatimes.com
Sensex rises 287 points, Nifty closes above 24,300 as market swings into green on first monthly expiry after CAS
The Indian stock market ended higher on Tuesday after a volatile session, with Sensex gaining 287 points and Nifty rising 115 points. Pharma, PSU banks and consumer durables led…
giovedì 27 agosto 2026·economictimes.indiatimes.com
Sensex sharply tumbles 500 points on first monthly expiry after CAS, Nifty closes below 24,100. What lies ahead?

Indian equities fell sharply on Thursday, erasing gains during the first monthly expiry under the new closing auction session. Sensex dropped 539 points, or 0.7%, while Nifty…

4,000% options surge in 15 minutes shows wild side of new CAS system

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4,000% options surge in 15 minutes shows wild side of new CAS system

Timeline cronologica

Sensex rises 287 points, Nifty closes above 24,300 as market swings into green on first monthly expiry after CAS

Sensex sharply tumbles 500 points on first monthly expiry after CAS, Nifty closes below 24,100. What lies ahead?

4,000% options surge in 15 minutes highlights wild India auction

On F&O expiry day, sensex sees wild swings during Closing Auction Session

BSE Sensex plunges 3% during closing auction amid liquidity concerns

Monthly Expiry shock: Did CAS fail its biggest test after Sensex loses 2,000 points in 6 minutes?

BSE Sensex plunges 3% during closing auction amid liquidity concerns

On F&O expiry day, sensex sees wild swings during Closing Auction Session

Bankex put sees a dramatic surge of 14,700% on expiry day

Sensex rises 240 points a day after CAS monthly expiry shock, Nifty nears 24,150. What’s ahead?

Closing auction scrutiny deepens as wild Sensex swing worries traders

4,000% options surge in 15 minutes shows wild side of new CAS system

4,000% options surge in 15 minutes highlights wild India auction

India’s new closing auction system explained: Why stock prices swing

How did Sensex crash 2,000 points in 6 minutes while Nifty stayed stable?

Was Sensex’s 2,000-point expiry crash a one-off? Here's what Friday's close hints about CAS

We imported the auction, but we left out the brakes