Borsa Istanbul started the new week with a sharp decline.

Borsa Istanbul started the new week with a sharp decline.

02.03.2026 10:21

As the war between the US-Israel and Iran enters its third day, Borsa Istanbul started the new week with a sharp decline. The BIST 100 index is trading at 12,987 points, down 5.32% at the opening.

The BIST 100 index on Borsa Istanbul started the day at 12,987.42 points, down 5.32 percent.

On Friday, the BIST 100 index, which followed a selling trend, ended the day down 1.16 percent at 13,717.81 points.

THE BIGGEST LOSER: TEXTILE LEATHER

At the opening today, the BIST 100 index fell to 12,987.42 points, down 730.39 points and 5.32 percent compared to the previous close. The banking index lost 5.81 percent, and the holding index lost 7.04 percent. While all sector indices declined, the biggest loser was textile leather, down 9.08 percent.

WAR PRESSURE IN GLOBAL MARKETS

Global markets started the week under selling pressure due to the U.S. and Israel launching attacks on Iran and the increased risk of prolonged conflict in the Middle East following retaliation from Iran. The geopolitical risks, which began to rise last week due to the lack of a clear outcome from negotiations between the U.S. and Iran, materialized over the weekend with the U.S. and Israel launching a large-scale airstrike against Iran.

TRUMP: WAR OPERATIONS WILL CONTINUE

Iran's counterattack against U.S. bases in nearby countries and Israel following the attacks has raised the risks of a prolonged war in the Middle East. U.S. President Donald Trump stated in a press conference yesterday that the military command structure in Iran was destroyed as a result of the attacks, asserting that war operations are continuing with full force and will persist until all targets are reached.

MINISTER ŞİMŞEK: WE ARE CLOSELY MONITORING GEOPOLITICAL DEVELOPMENTS

Minister of Treasury and Finance Mehmet Şimşek stated in a press conference yesterday that they are closely monitoring geopolitical developments, saying, "We are evaluating the possible effects on our economy in all dimensions; our economy has strong macroeconomic fundamentals and is resilient to shocks."

CRITICAL DECISIONS FOR BORSA ISTANBUL

On the other hand, the Capital Markets Board (CMB) decided to ban short selling transactions in Borsa Istanbul AŞ's equity markets until the end of Friday's session. Borsa Istanbul AŞ also reduced the order/trade ratio (OTR) in the Equity Market from 5:1 to 3:1 until further notice.

Domestically, attention has turned to growth data. The expectation survey regarding the Gross Domestic Product (GDP) data for the fourth quarter of 2025, which will be announced today by the Turkish Statistical Institute, was completed with the participation of 19 economists. According to the survey results, economists predict that the Turkish economy will grow by 3.6 percent year-on-year in the fourth quarter of 2025.

Analysts noted that today, domestic growth data and, abroad, in addition to geopolitical developments, the speech of European Central Bank (ECB) President Christine Lagarde, as well as the Manufacturing Purchasing Managers' Index (PMI) data to be announced in the Eurozone and the U.S. will be closely monitored, stating that technically, the support levels for the BIST 100 index are at 12,500 and 12,000 points, while the resistance levels are at 13,000 and 13,500 points.

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