If u are thinking why people are taking losses and crying when they can actually short the market and make big bucks !!Its just because they have an unsettled money in F&O . Theyare in debt .. to their respective brokerge houses . So they have no cash to invest !!
If u have lost money as Mark to market ?? Then hey its the broker’s fault not urs . So u just default .
There are two margin , SPAN margin and extra margin . The margin u pay is ( SPAN + extra) . When ur M2m goes below the extra margin brokerage houses should square off or atleast get a cheque from u …. for additional margin . If he hasnt done that it shis fault . So dont worry !! You just default and be happy !!