Turkey's main equity index ended the session in negative territory as selling pressure in several major sectors pushed the market lower. The BIST 100 fell 2.19% to close at a new one-month low, with the Banking, Wholesale & Retail Trade and Technology sectors cited among the principal contributors to the downturn.
At the close in Istanbul, falling stocks outnumbered advancing ones by a wide margin: 465 issues declined, 131 rose and 18 finished unchanged on the exchange.
Among individual movers, Batisoke Soke Cimento Sanayi TAS (IS:BSOKE) was the top performer on the index, jumping 9.95% or 2.98 points to finish at 32.94. Katilimevim Tasarruf Finansman AS (IS:KTLEV) also posted a 9.95% gain, rising 4.73 points to end the session at 52.25. Turkiye Petrol Rafinerileri AS (IS:TUPRS) advanced 4.54% or 11.20 points to close at 258.00.
At the other end of the market, Qua Granite Hayal Yapi ve Urunleri Sanayi Ticaret AS (IS:QUAGR) dropped 10.00% or 0.32 points to close at 2.88, making it the weakest name on the BIST 100. Kiler Holding AS (IS:KLRHO) fell 9.97% or 20.30 points to finish at 183.30, while Anadolu Efes Biracilik ve Malt Sanayi AS (IS:AEFES) declined 9.92% or 1.86 points to end the day at 16.89.
Several stocks reached notable price landmarks during the session. Shares of Batisoke Soke Cimento Sanayi TAS (IS:BSOKE) climbed to 52-week highs on the 9.95% gain, while Katilimevim Tasarruf Finansman AS (IS:KTLEV) and Turkiye Petrol Rafinerileri AS (IS:TUPRS) each rose to all-time highs on their respective advances.
Commodity markets saw significant moves as well. Gold futures for April delivery were up 1.85% or 93.71 to $5,172.41 a troy ounce. Crude oil for April delivery jumped 9.90% or 8.02 to reach $89.03 a barrel, and the May Brent contract rose 7.12% or 6.08 to trade at $91.49 a barrel.
Currency trading reflected mixed dynamics: USD/TRY moved 0.15% higher to 44.07, while EUR/TRY eased 0.27% to 51.09. The US Dollar Index Futures closed down 0.15% at 99.16.
Market participants will be watching how sector-level weakness and commodity-driven price moves feed into broader investor sentiment, particularly given the lopsided ratio of decliners to advancers on the Istanbul exchange during the session.