Thanks TradeSmartOnline. I always had this question, what if there is a flash crash like the one that happened in 2011 when Nifty went down 1000 points in 5 minutes. Don't you stand the chance of losing money and your hat!? The traders' margin blocked for the futures positions is predetermined and during a flash crash the exaggerated movements can cause the broker to lose money ey and recovery from clients may not be possible due to the high possibility of bad debts.how do u intend to deal with a six sigma event such as this?
Hello market oracle,
Flash crashes have been a more recent phenomena and has happened usually because of some temporary error (software or human). You'll observe the market rebounds very quickly after that to the normal level.
In case of a bad news market may still react fast but the speed has not been like that of a flash crash situation. The big players who move the markets also need time to react to the situation and adjust their position accordingly. Bigger positions usually take time to readjust too. If you look at events like 9/11 which shook the entire world, the markets did not start falling immediately.
Moreover, the function of an Exchange is to ensure the clearing. In case they do not collect proper margins they have much more at stake. That's why the prescribed margins are decided by the exchanges itself. They may even change the margins on account of a higher volatility.
Moreover, in case a significant news is expected during the market we reduce our intraday exposure limits.
Hope this helps.