Not fully understand this 4%, 2%, 5% idea! Index future ASM raised from 0.50% to 2% means 4 times increase. Is that means Nifty Future NRML from 8% to 10% (2% increase)?
Probably below is the idea!
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In case of Out-of-the-money index option contracts, the ASM shall be restricted to 2% only.
For this purpose, Out-of-the-money index options contracts shall be defined as options contracts with strike prices which are out-of-the-money by
not less than 5% away from the previous day closing price of the underlying Index.
IMO:
That's insane! 5% outside than prev day closing price => OTM strike. 5% is too much. For example, if Bank Nifty is at 28200, then even 29500 CE is not OTM!
So, most of the tradable strikes are not OTM and we need an extra 4% margin to write Index Option. Is that mean half of the current NRML (8%) extra!!
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I think SEBI has already done more than enough to limit the exposure. For stock option and future it is 5% increase!!
For Bank Nifty 2% margin increase (from Nov 30) means another 20000-22000 extra for positional margin!
For example current positional margin to for Reliance Future is about 12.5% =>
1.6 lakh.
From Nov 30 another 5% increase =>
2.25 lakh!
Most of the small retail traders will be out from Stock Future and Options from Nov 30 (5% higher margin), no need to link Networth/ITR.