“ India’s Biggest Casino ”
India’s biggest casino now opens at 3:15 PM.
Not in Goa. Not in Sikkim.
At the NSE closing auction where a 0DTE option trader can watch the
“settlement value”
jump 150 points while the underlying cash basket is not trading continuously.
A thread 👇🏻
Today at 3:15 PM, Nifty was at 24,463.45.
Its official close: 24,614.90.
That is a 151.45-point auction jump on weekly expiry day.
Yesterday, Day 1 of CAS, the closing adjustment was roughly 200 points.
Fair and robust price discovery, apparently.
Here is the new game:
3:15–3:20: cash orders blocked; reference price calculated.
3:20–3:25: market + limit orders collected.
3:25–random close: only limit orders; market orders locked.
3:28–3:30: random close.
F&O keeps trading till 3:40.
On my terminal, the ATM straddle was near ₹100 at 3:15.
In five minutes it went ₹100 → ₹120 → ₹85 → ₹100, even though the cash index was effectively frozen.
At 3:20, the indicative auction value began moving and 0DTE derivatives had to chase it.
The market then priced possible closes around 24,500, 24,520, 24,545, 24,587 and 24,602.
By roughly 3:28–3:29, it stabilised near 24,615.
The official Nifty close was 24,614.90.
Great opportunity provided you enjoy betting on a moving, non-binding auction indication.
Let us call this what it was.
Not normal cash-futures arbitrage.
Before random close, the indicative price can change as orders enter, change or disappear. The cash basket cannot be continuously traded against it.
You are trading settlement jump risk not a locked arbitrage.
On expiry, this is far more dangerous.
The final Nifty close determines option settlement.
So a thin closing auction in heavyweight stocks can transfer large P&L across the expiring options book while traders cannot continuously hedge the underlying basket.
Today’s CAS turnover was reportedly ₹1,542.4 crore on NSE versus only ₹9.4 crore on BSE.
That is 99.4% of auction activity concentrated on NSE.
The two exchanges run separate auctions and can discover different closing prices.
What could possibly go wrong?
The absurdity:
The “actual” Nifty remains based on the last continuous cash prices.
The “indicative close” is based on tentative auction prices.
But expiring options trade on expectations of the second number.
One index. Two displayed realities. Ten minutes to settlement.
NSE says CAS promotes transparency and robust price discovery.
Yet its own framework allows:
• separate NSE/BSE closes
• market orders counted in equilibrium
• market orders locked after 3:25
• no MOC/LOC order type
• a random closing time
On weekly expiry. Brilliant.
Closing auctions are not the problem. Major markets use them.
The mistake is coupling a new, thin cash auction to 0DTE settlement while derivatives remain live and the underlying basket cannot be continuously hedged.
That turns price discovery into a lottery.
SEBI and NSE should urgently:
Pause CAS-based weekly-expiry settlement.
Publish real-time index and stock imbalances to everyone.
Add deviation collars and auction extensions.
Align cash finalisation with derivatives.
Until then: 3:15 PM = casino time 😞
@NSEIndia@BSEIndia@SEBI_India
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Comment with your thoughts
What the hell is happening to the Indian stock market?
Dear @SEBI_India & @NSEIndia@BSEIndia
How many times do you expect traders to rebuild their entire business?
> December 2020 – 50% leverage removed
> March 2021 – 75% leverage removed
>September 2021 – 100% leverage removed
We adapted.
Yes, leverage is a double-edged sword. But thousands of genuine traders with smaller capital were affected. Still, we adapted.
> September 2023 – Bank Nifty expiry was shifted from Thursday to Wednesday, while BSE launched Sensex weekly expiry on Friday. Suddenly, we had expiries almost every trading day.
Many traders, especially algo and 0-DTE traders, redesigned their entire systems.
We adapted.
> November 2024 – Weekly expiries of FinNifty, Bank Nifty and other indices were removed. Only Nifty and Sensex weekly expiries remained.
Again, thousands of traders had to change their strategies.
We adapted.
> February 2025 – Expiry-day margin benefit was removed.
STBT traders were hit badly.
We adapted.
> 1st September 2025 – Nifty expiry shifted from Thursday to Tuesday.
Again...
We adapted.
> Jane Street reportedly made billions of dollars from Indian markets over the years. Later, regulatory action was taken, and subsequently trading restrictions were lifted after payment of regulatory dues/settlement.
How exactly did all of this benefit Indian retailers?
Meanwhile...
- Option STT has increased massively over the last few years.
- Bid-ask spreads have widened.
- Slippage has increased.
- Global volatility has increased.
- Transaction costs keep rising.
We adapted to everything.
And now...
Closing Auction Session (CAS).
Seriously?
Every few months there's another structural change.
Every few months traders are forced to rebuild their systems.
Every few months liquidity takes another hit.
You say these changes are for retail investor protection.
Then please show us the data.
Can you show even one report proving that retail trading losses have actually reduced because of all these interventions?
If not, then what exactly are these constant changes achieving?
Instead of making markets more efficient, you're making trading more expensive, more complicated, and pushing serious traders towards crypto and international markets.
As a full-time trader, my inner soul genuinely cries today seeing the direction our markets are heading.
We survived leverage removal.
We survived daily expiries.
We survived removal of daily expiries.
We survived expiry changes.
We survived removal of expiry margin benefits.
We survived higher STT.
We survived wider spreads and slippage.
Now we are expected to survive CAS as well?
Enough is enough.
I request SEBI and the exchanges to reconsider this rule.
Before implementing such major structural changes, consult the trading community. There should be proper communication, public discussion, and representation from active traders.
I also request every trader to raise their voice through the proper channels. If you genuinely believe these changes are hurting market participants, please send your feedback or complaint to SEBI through its official grievance mechanism. And if anyone from the industry has a direct channel to the exchanges or regulators, please help convey the concerns of the trading community.
Please Retweet this so our voice reaches the right people.
Enough of silent adaptation. It's time the trading community is heard.
@AnilSinghvi_@_anujsinghal@SarangSood@PRAFULKULKARN18@adigitalblogger@iarjuntandon@JayneshKasliwal@sunilgurjar01@piyushchaudhry@SantoshPasi@RakeshPujara1@TanmayKurtkoti@justnottamomma@AshishGupta325
What is happening is unforgivable! How can responsible channels spread false news about a person who is responding to treatment and is recovering? This is being extremely disrespectful and irresponsible. Please give due respect to the family and its need for privacy.
शरद सांगेल ते धोरण ,
शरद बांधेल ते तोरण असे ब्रीद घेऊन जगणाऱ्या लोकांनी हे पहावे.
१५ ॲागस्ट रोजी कत्तलखाने बंद ठेवण्याचा निर्णय हा महायुती सरकारने घेतलेला नसून १२ मे १९८८ मध्ये शंकरराव चव्हाण मुख्यमंत्री असताना व कॅाग्रेस सत्तेत असताना घेतलेला निर्णय आहे. त्यानंतर महिनाभरातच शरद पवार मुख्यमंत्री झाल्यापासून हा १५ ॲागस्टचा कत्तलखाने बंदचा निर्णय पहिल्यांदा अंमलात आणला गेला.
मविआ सरकारमध्ये २/३ वर्षांपूर्वी हे लोक मंत्री असतानासुध्दा १५ ॲागस्ट ला कत्तलखाने बंद ठेवण्यात आले होते, तेव्हा त्या विरोधात एक शब्दही हे दोघेही बोलले नाहीत.
रडा, पण माहीती घेऊन मग रडा,
@आदित्यठाकरे
@आव्हाड
#15thAugust
The Indian Air Force (IAF) has successfully executed its assigned tasks in Operation Sindoor, with precision and professionalism. Operations were conducted in a deliberate and discreet manner, aligned with National Objectives.
Since the Operations are still ongoing, a detailed briefing will be conducted in due course. The IAF urges all to refrain from speculation and dissemination of unverified information.
#OpSindoor
#IndianArmedForces
#IndianAirForce
#OperationalCapability
@DefenceMinIndia@MEAIndia@MIB_India@SpokespersonMoD@HQ_IDS_India@adgpi@IndiannavyMedia
पुण्यात जोग यांच्यावर हल्ला करणाऱ्या लोकांची जात काढून त्या आख्या जातीला गुन्हेगार ठरवायची चूक ब्राम्हण समाज चुकूनही करणार नाही.
कारण गुन्हेगार हा गुन्हेगार असतो, त्याला जात नसते हे ब्राम्हण समाजाला माहिती आहे.
बिग्रेडी:
अनाजी नीच माणूस होता
मी:
एकतर त्याचे नाव अण्णाजी असे होते आणि हो तो स्वराज्याचा शत्रू होता.
आता सोयराबाई, शिर्के, मोरे,पिसाळ, खोपडे, घोरपडे, औरंग्या वगैरे बद्दल बोलूया?
बिग्रेडी:
किती दिवस जुने उगाळत बसणार?
महागाई,शेतकऱ्यांचे प्रश्न, बेरोजगारी यावर बोला
मी:
अण्णाजी ही इतिहासातच होता. त्यावर बोलता की. रोज.
बिग्रेडी:
खऱ्या नावाने ये, चाळीस पैसे, व्हॉट्सॲप युनिव्हर्सिटी, शेंडीवाल्या, पिठमाग्या