The BIST 100 index in Borsa Istanbul lost 0.34 percent of its value in the first half of the day, falling to 11,079.57 points.
BIST 100 index, which moved in a downward trend in the first half of the day, fell to 11,079.57 points as of 13:00, with a decrease of 37.42 points and 0.34 percent compared to the previous closing.
The total transaction volume was 40.8 billion lira. The banking index lost 1.18 percent and the holding index lost 0.59 percent.
Among the sector indices, the biggest gainer was metal goods with 3.06 percent, and the biggest loser was financial leasing factoring with 5.68 percent.
While the declining oil prices in global markets, due to the diplomatic initiatives aimed at reducing the US-Iran tensions, supported the risk appetite, all eyes turned to the interest rate decision of the US Federal Reserve (Fed) to be announced this week and the balance sheets of major technology companies.
Analysts stated that the data agenda will be calm for the rest of the day, and noted that technically, 11,000 and 10,900 points in the BIST 100 index are support, and 11,200 and 11,300 points are resistance.