Vivek Kumar

Principal DevSecOps Engineer

[Elon Musk @elonmusk]

Dear Prime Minister Ambani,

Please accept my humble apologies for not realizing that you are the real boss of India.

Naturally, you would prefer to maintain your monopolistic exploitation of the great people of India, but would you nonetheless consider allowing Starlink to compete?

There are many areas of India, as there are in all countries, with no Internet access, which denies children the opportunity for education and for small businesses the opportunity to sell their goods to a global market. Starlink would change their lives for the better.

Thank you 🙏

[Vivek Bajaj @vivbajaj]

Now that the government is addressing the benchmarking challenge for foreign funds by introducing CAS, can we also request the “head of the family” to rethink STT for its own kids?

I am sure we want our Indian participants to survive, and our market microstructure to thrive.

[Sourabh Sisodiya,CFA @sourabhsiso19]

Wild movement in sensex put after 3:20 PE

77000 pe went 8 to 300 in no time
What was suprising that far otm puts 76000 PE went from 0.4 paise to 20 rs

It should be renamed CAS-ino instead of CAS

[Mitesh Patel @Mitesh_Engr]

Don’t think that CAS will be rolled back.
They were frustrated that sellers are making money.
Since last few years they are trying to curb sellers.
Removed only span margin rule
Removed extra margin given by broker
Removed by default 3x MIS limit
Increased margin per lot

Cont..

[Kundan Prajapati @ScholarTrading]

If they eventually roll back CAS, who will be responsible for the losses traders suffered because of this change in the first place?

The big officers sitting in SEBI’s office?

Because honestly, Option 2 makes the most sense.

There was nothing wrong with the old 30-minute VWAP settlement method. We were given a solution to a problem that didn’t really exist - and the result was unnecessary chaos and uncertainty for traders.

If SEBI now agrees that the old method was better and rolls CAS back, then this question deserves to be asked:

Who takes responsibility for the losses caused during this entire episode?

The traders who had to bear the consequences?

Or the people who made the decision?

Regulation should reduce uncertainty, not create it.

#RollBackCAS

[PRAFUL KULKARNI @PRAFULKULKARN18]

So the CAS candle closed up 400 points but markets are down 800 points the next morning.
Efficient price discovery guys. CAS is here to stay guys!

[PRAFUL KULKARNI @PRAFULKULKARN18]

Every week the swings get worse and wilder!!

Welcome to the state sponsored casino where institutions loot you in broad daylight!

Can it get any worse than this?
The answer is YES!!

#CAS

[Saketh R @saketh1998]

CAS is not just affecting option traders. It is also distorting the closing data used by equity traders, scanners and systematic strategies.

1. False top-gainer and top-loser signals

Suppose a stock suddenly rises 2–3% during CAS and closes at an unusually high price. The next morning, it simply returns to the level where it was trading before CAS.

A screener will now show it as a “top loser,” even though there is no real weakness in the stock. It is only correcting an artificial closing-price distortion. An intraday system may therefore select a techinically strong stock as a weak stock and take the wrong trade.

Paytm, Nykaa and Divis are recent examples.

2. Distorted 52-week-high breakouts

A stock may touch a 52-week high during CAS, when an intraday strategy cannot trade that move. The system will still record it as a 52WH.

When the stock comes down slightly during trading the next day, It is technically the new 52WH, but the scanner misses it because the 52-week high was technically registered the previous day. A genuine, tradable breakout can therefore be missed because of an untradeable CAS print.

OFSS is one such recent example.

3. Incorrect chart and indicator signals

Daily candles, moving averages, RSI, momentum indicators and daily or monthly crossovers are all calculated using the closing price.

An artificial 2–3% CAS move can change the candle, trigger a false crossover, alter RSI or generate incorrect entry and exit signals. It also creates a serious problem for systematic traders: should they use the official closing price or ignore CAS and use the price before it?

CAS is therefore no longer only an option-trading problem. It can corrupt the raw market data used by equity scanners, intraday strategies, technical indicators and backtesting systems. If the official closing price itself cannot be trusted, the entire system built on that price becomes unreliable.

[Vivek Kumar @vivekyad4v]

@SimpleAditya_9 It was pretty much OTM but with hedges. From no loss at 3:26 PM to >-5% at 3:30 PM. 😨

[Vivek Kumar @vivekyad4v]

@SimpleAditya_9 Just tried simulating iron condor for Aug 27 CAS behaviour, it was brutal. Within 3 mins, loss went >5%. That sort of premium explosion has not repeated yet but can't be sure.

[Vivek Kumar @vivekyad4v]

@SimpleAditya_9 I traded after a long time. I had entered yesterday 3:15 pm, premiums started decaying today 3:20 pm 😕

CAS ne baja rakhi h… too much uncertainty.. Learned about CAS impact on options today only.

[Saketh R @saketh1998]

CAS Fair Price Discovery

[Aditya Singhania @SimpleAditya_9]

This is the cost you pay for every transaction you place when buying and selling shares. This is not FNO; normal delivery shares. In the USA, the cost is 100 times cheaper. Many index funds in the USA charge a 0.03% expense ratio per year, which is 6 to 7 times cheaper than what our government robs from our pocket, assuming we just do just 1 transaction of buy and sell every year.

[Vivek Kumar @vivekyad4v]

@SimpleAditya_9 @piyushm85 Exactly.

[Aditya Singhania @SimpleAditya_9]

Koi sense hai is baat ka?🤷🏻

[Aditya Singhania @SimpleAditya_9]

Make a noise that they cannot avoid!

12th Aug, No trade day💪

#Traders

[Kapil Dhama @kapildhama]

It is dangerous to be right when the government is wrong.

~Voltaire

[Vivek Kumar @vivekyad4v]

@kapildhama I will need to stick as i have invested in etfs/shares and pledged them. 🫤

[Bandi Shreyas @BandiShreyas]

So what I have understood is, its like a T20 cricket match where in the 19th over everyone's TV will stop broadcasting the match, and after sometime the results will be announced and we have to accept the result

😅

#rollbackCAS

[PRAFUL KULKARNI @PRAFULKULKARN18]

1.Reduction of 0DTEs
2.Utterly stupid ELM
3.Choking of prop trading
4.Increasing STT, which itself is a redundant tax

Now this horrendous CAS.

SEBI seems to have lost it.

#rollbackCAS