Significantly FIIs have rolled over their positions to October, a sudden trend which happened towards the fag end of last week.
According to analysts at IDBI Capital Markets, until the middle of last week there was a distinct tendency towards squaring up of stock futures positions by the foreign investors, which was indicated by the drop in open interest.
However the FIIs seem to have had a change of heart after that and there was bias towards rollover which has eased some of the selling pressure in the market.
According to figures available, around 95 per cent of September positions have been rolled over to October.
Their positions in index futures constitute roughly 20 per cent of the total open interest. The market is expecting a further build-up of short positions on Monday.
FIIs have also increased their interest in index options, suddenly increasing their trading in this segment. In fact statistics show that there has been a week on week rise of 65.30 per cent in the total FII open interest in options.
The total open interest of the FIIs in the derivatives segment has nearly doubled from 12.87 per cent in the beginning of the week to nearly 24 per cent at the end of the week.