Stock Markets July 27, 2026 11:30 AM

Istanbul stocks slip as BIST 100 posts one-month low, commodity prices wobble

Chemical, petroleum and technology sectors weigh on market; select small- and mid-caps see sharp moves

By Nina Shah
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EFOR

Turkey's equity benchmark closed lower on Monday, with the BIST 100 falling 1.21% to a fresh one-month trough. Losses were concentrated in the Chemical, Petroleum & Plastic, Non-Metal Mineral Products and Technology sectors. Market breadth favored decliners, while select stocks recorded notable gains and sharp declines. Commodities and FX markets showed mixed moves, with gold edging higher and crude oil prices retreating sharply.

Istanbul stocks slip as BIST 100 posts one-month low, commodity prices wobble
EFOR
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Key Points

  • BIST 100 fell 1.21% to a one-month low, driven by weakness in Chemical, Petroleum & Plastic, Non-Metal Mineral Products and Technology sectors.
  • Market breadth was negative with 467 decliners, 149 advancers and 14 unchanged.
  • Notable individual moves: ODINE rose to an all-time high (+5.57%), while SKBNK (-9.95%) and PETKM (-8.45%) recorded the largest percentage declines.

Turkey's main stock index ended Monday's session in negative territory as sector pressure pushed the BIST 100 to a new one-month low.

At the close in Istanbul, the BIST 100 lost 1.21%, finishing the day down and trading at its lowest level in a month. The downturn was led by weakness in the Chemical, Petroleum & Plastic, Non-Metal Mineral Products and Technology sectors.


Winners and losers

Among constituents, Odine Solutions Teknoloji Ticaret ve Sanayi AS (IS:ODINE) was the session's best performer, climbing 5.57% - an increase of 137.50 points - to close at 2,607.50. Odine's shares rose to an all-time high during the session.

  • Efor Yatırım Sanayi ve Ticaret A.Ş. (IS:EFOR) added 5.49%, or 1.00 point, to end at 19.20.
  • Pasifik Eurasia Lojistik Dis Ticaret AS (IS:PASEU) gained 4.62%, or 5.30 points, to close at 120.00.

On the downside, Sekerbank TAS (IS:SKBNK) registered the largest fall, sliding 9.95% - a drop of 1.17 points - to finish at 10.59. Petkim Petrokimya Holding AS (IS:PETKM) declined 8.45%, or 1.86 points, to end at 20.16, while Qua Granite Hayal Yapi ve Urunleri Sanayi Ticaret AS (IS:QUAGR) lost 5.36%, or 0.21 points, closing at 3.71.

On the Istanbul Stock Exchange overall, 467 stocks fell, 149 advanced and 14 ended unchanged.


Commodities and FX

In commodities trading, Gold Futures for August delivery rose 0.19%, gaining 7.60 to trade at $4,078.40 per troy ounce. Crude oil prices moved lower: September delivery crude fell 6.86% or 6.13 to $83.18 per barrel, while the October Brent contract slipped 5.96% or 5.46 to $86.22 per barrel.

On the currency front, USD/TRY was up 0.05% to 47.35, while EUR/TRY rose 0.19% to 53.91. The US Dollar Index Futures was unchanged at 101.30 (0.00%).


Market context

The sell-off in commodity-related and industrial sectors contributed to the BIST 100's slide. While several small- and mid-cap names outperformed, the session was dominated by declines in names linked to banking, petrochemicals and construction-related materials, as reflected in the biggest percentage drops.

Overall market breadth was negative, with nearly three times as many decliners as advancers, and selective strength in a handful of technology and logistics stocks unable to offset sectoral pressure.


Closing note

Monday's trading left the BIST 100 at a one-month low, with commodity prices and sector-level weakness among the drivers recorded in the session. Market participants will likely watch whether these sector trends persist in coming sessions.

Risks

  • Sector concentration of losses in Chemical, Petroleum & Plastic and Non-Metal Mineral Products may pressure related industrial and materials companies.
  • Significant drops in individual banking and petrochemical names could increase volatility in financials and commodity-linked stocks.
  • Sharp declines in crude oil prices may affect energy-linked sectors and related equities.

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