The stock market started the day with a rise

Borsa Istanbul's BIST 100 index opened the session up 0.67% at 11,559.31 points, extending the benchmark's gains into the new trading day. Among sector gauges, chemicals, petroleum and plastics led advancers with a 2.32% rise, while construction posted the steepest decline at 1.38%. The split performance signals investors are rotating toward commodity-linked and industrial names while pulling back from builders, keeping the index's opening advance narrow. Traders will watch whether the chemicals and petroleum sector's early strength holds through the session and whether construction losses deepen, with the 11,559 level serving as the first reference point for the day's direction.