BIST 100 drops 1.89% to 14,367.60 on May 15 2026

BIST 100 closed 1.89% lower at 14,367.60 points, its biggest single‑day drop of the week, as banking shares fell sharply and investors reacted to rising oil prices and higher bond yields abroad【2】.

Market drivers

The decline was led by the banking sector, which lost 2.60% while the holding index fell 1.92%【2】. Analysts linked the sell‑off to “inflationary concerns sparked by rising oil prices” and “the rise in bond yields” that pressured risk assets globally【2】. In contrast, the mining sector was the only gainer, up 3.37% on May 15 according to CNN Türk【1】. The broader market context showed a modest total turnover of 169.1 bn TL, down from the 192.6 bn TL recorded a week earlier when the index fell only 0.26% to 14,417.91 points【1】.

Global backdrop

Over the same period, U.S. non‑farm payroll data had lifted risk appetite, but the closure of U.S. markets limited trading activity, keeping volumes low【1】. The same report noted that upcoming data—including Turkey’s CPI‑based real effective exchange rate, Treasury cash balance, and industrial production—will dominate next week’s agenda, alongside U.S. Federal Open Market Committee (FOMC) minutes and European inflation releases【1】. These external data points underscore why oil‑price‑driven inflation fears are resonating in Turkish equities.

Technical levels

Technical analysis placed support around the 14,300–14,200 point band and resistance near 14,500–14,600 points【1】. The index’s fall to 14,367.60 points keeps it within the support zone, suggesting that further downside may hinge on upcoming domestic inflation and external bond‑yield movements.

What to watch

• Turkish Consumer Price Index (CPI) and real effective exchange rate data due next week.
• U.S. FOMC meeting minutes and European inflation releases, which could influence bond yields and oil prices.
• Banking sector earnings reports, especially for the largest banks that drove the recent sell‑off.

The May 15 slide highlights the sensitivity of Turkey’s equity market to global commodity‑price shocks and bond‑market dynamics, leaving the BIST 100 poised for further moves as domestic inflation data and external monetary policy cues unfold.