Stock Markets June 3, 2026 11:30 AM

Istanbul market slips as BIST 100 closes down 1.65%

Technology, Chemical, Petroleum & Plastic and Electricity sectors weigh on benchmark amid mixed commodity and FX moves

By Hana Yamamoto

Turkey's main equity index fell on Wednesday, with the BIST 100 ending the session down 1.65% as losses in several cyclical and industrial sectors pushed more stocks lower than those that gained. Select mid- and small-cap names posted sharp gains and losses, while commodity and currency moves showed divergence between gold, oil and the lira.

Istanbul market slips as BIST 100 closes down 1.65%

Key Points

  • BIST 100 closed down 1.65% as losses in Technology, Chemical, Petroleum & Plastic and Electricity sectors pulled the index lower.
  • Advancers were outnumbered by decliners by 149 to 466, with 6 stocks unchanged, indicating weak market breadth.
  • Commodities and FX diverged: Gold futures fell, while crude oil contracts rose; USD/TRY inched higher and EUR/TRY declined.

Turkish stocks retreated on Wednesday, with the BIST 100 closing the session 1.65% lower in Istanbul as weakness in the Technology, Chemical, Petroleum & Plastic and Electricity sectors exerted downward pressure on the benchmark.

The market's advance-decline picture was tilted heavily toward decliners: 466 stocks fell versus 149 that rose, while 6 finished unchanged.


Top performers

  • Tureks Turizm Tasimacilik AS (IS:TUREX) led gainers, adding 9.94% or 0.82 points to close at 9.07.
  • Destek Finans Faktoring As (IS:DSTKF) rose 8.75% or 177.00 points to finish at 2,200.00.
  • Sarkuysan Elektrolitik Bakir Sanayi ve Ticaret AS (IS:SARKY) advanced 6.67% or 2.00 points to end the session at 32.00.

Largest declines

  • Mia Teknoloji AS (IS:MIATK) posted the steepest drop, down 9.41% or 5.30 points to close at 51.00.
  • Pasifik Teknoloji A.S. (IS:PATEK) fell 7.83% or 2.04 points to finish at 24.00.
  • Aselsan Elektronik Sanayi ve Ticaret AS (IS:ASELS) lost 5.95% or 24.25 points to end at 383.50.

Commodity markets showed mixed movement during the session. Gold Futures for August delivery declined 1.04% or 46.98 to $4,472.92 a troy ounce. In contrast, crude oil prices were higher: the July crude contract rose 1.98% or 1.86 to $95.62 a barrel, while the August Brent contract increased 1.63% or 1.56 to trade at $97.56 a barrel.

Currency pairs tied to the Turkish lira also moved: USD/TRY ticked up 0.08% to 45.96, while EUR/TRY eased 0.16% to 53.39. The US Dollar Index Futures was higher as well, up 0.23% at 99.41.


The session underscored divergent forces across markets. While a subset of names recorded double-digit percentage swings in both directions, overall market breadth was negative. Commodity price shifts and currency fluctuations accompanied the equity declines, illustrating mixed pressures on different segments of the market.

Market participants will likely monitor whether the sectors that led losses Wednesday - Technology, Chemical, Petroleum & Plastic and Electricity - continue to underperform and how persistent movements in oil and the lira may feed through to listed firms and investor sentiment.

Risks

  • Narrow market breadth - with 466 decliners versus 149 advancers - increases the risk of broader downside across the exchange, particularly in affected sectors such as Technology, Chemical, Petroleum & Plastic and Electricity.
  • Rising oil prices, with July crude up to $95.62 a barrel and Brent at $97.56, could pressure energy-linked costs and profitability for companies exposed to fuel and input prices.
  • Exchange rate movements - USD/TRY rising to 45.96 and EUR/TRY falling to 53.39 - add currency-related uncertainty for firms with foreign currency exposure.

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