The Tadawul All Share Index (0.25% lower at 6,302.58 points) was dragged down by transport and energy shares. The market bellwether Sabic, however, ended unchanged at SR90.50. A number of insurers advanced against the sluggish trading. Wataniya Insurance Company posted the largest gain, closing 9.74% higher at SR51.25. As oil prices declined below $78 on Monday, the KSA market might remain in a tricky mood.