The stock market ended with a decline.

Emirhan Yılmaz October 16, 2026 • Update: October 16, 2026 The BIST 100 index decreased by 348.4 points compared to the previous close, while total transaction volume reached 116.2 billion lira. The banking index and the holding index both lost value by 1.87% and 2.46% respectively. While all sector indices declined, financial leasing was the largest loser with a loss of 5.72%. Macroeconomic data released in the US, developments regarding bond markets, and the performance of technology stocks continue to be decisive for the direction of global markets. Analysts stated that the Turkish Central Bank (TCMB) interest rate decision domestically next week, alongside the Purchasing Managers' Index (PMI) data globally, inflation in the UK and Japan, and growth data in China will be followed, and they noted that on a technical basis, 11,600 and 11,500 points are support levels, and 11,800 and 11,900 points are resistance levels for the BIST 100 index. Meanwhile, Treasury and Finance Minister Mehmet Şimşek stated that they plan to complete legal regulations that will strengthen the fight against capital market crimes, including coordinated transactions of funds, by the beginning of 2027. In a press release regarding Turkey, MSCI, one of the global index providers, stated that some index changes in the stock market are frozen until a second announcement. MSCI noted that additional time is needed to assess whether these measures provide the structural improvements that investors expect, which signal the steps taken by Turkish authorities in capital markets. Furthermore, the assessment by Standard & Poor's (S&P), an international credit rating agency, regarding Turkey is expected to be announced this evening. The expectation is for S&P to maintain Turkey's credit rating as "BB-" and its outlook as "stable."