Friday marked a lacklustre day for the markets; they opened higher but spent the entire session trading in a sideways trajectory. The Nifty opened with a gap up and formed its high point in the early seconds of the session.After that, it drifted lower and continued trading around the previous close. While staying completely devoid of any directional bias, the headline index closed with a minor gain of 20.15 points (+0.08%).Realty sector stocks