Borsa Istanbul started the day in negative territory

Borsa İstanbul's BIST 100 index opened Thursday down 0.84% at 11,237.83 points, with every sector index in negative territory and transport posting the steepest decline. The broad-based selling follows persistent pressure in global markets tied to investor concerns over artificial intelligence investments. The session's weakness matters as a signal of risk appetite across Turkish equities, with transport leading the downside. Traders will watch whether the index holds the 11,200 level and whether AI-related sentiment abroad continues to weigh on emerging-market flows.