Stock Markets January 27, 2026

Istanbul bourse ends lower as technology, timber and insurance shares weigh on index

BIST 100 slips 0.53% as more stocks fall than rise; select mid-caps hit record highs

By Marcus Reed
Istanbul bourse ends lower as technology, timber and insurance shares weigh on index

Turkey's main stock index closed lower on Tuesday, dragged down by losses in the Technology, Wood, Paper & Printing and Insurance sectors. The BIST 100 fell 0.53% as decliners outnumbered advancers by a wide margin, though several individual stocks posted strong gains and a pair reached all-time highs.

Key Points

  • BIST 100 closed down 0.53% amid losses in Technology, Wood, Paper & Printing and Insurance sectors.
  • Market breadth was negative: 348 stocks fell, 248 advanced and 13 were unchanged.
  • Kiler Holding (KLRHO) and EIS Eczacibasi (ECILC) rose to all-time highs; notable winners included IZENR and ECILC while TURSG, ASELS and MAGEN underperformed.

Turkey's equity market closed in negative territory on Tuesday, with the benchmark BIST 100 ending the session down 0.53% as declines in Technology, Wood, Paper & Printing and Insurance stocks pressured the index.

At the Istanbul close, the BIST 100 lost 0.53%.

The session's largest gainers included Kiler Holding AS (IS:KLRHO), which jumped 6.61% - an increase of 27.75 points - to finish at 447.50. Izdemir Enerji Elektrik Uretim AS (IS:IZENR) added 5.26%, or 0.49 points, closing at 9.80. EIS Eczacibasi Ilac Sinai ve Finansal Yatirimlar Sanayi ve Ticaret AS (IS:ECILC) rose 5.14%, a 6.30-point increase, to settle at 128.90.

On the downside, Turkiye Sigorta AS (IS:TURSG) recorded the steepest decline among the large movers, falling 4.72% or 0.57 points to end the day at 11.51. Aselsan Elektronik Sanayi ve Ticaret AS (IS:ASELS) dropped 3.94% - 12.75 points - to close at 310.50, while Margun Enerji Uretim Sanayi ve Ticaret AS (IS:MAGEN) slipped 3.84%, down 1.64 points to 41.10.

Market breadth at the Istanbul Stock Exchange skewed negative, with 348 issues falling versus 248 advancing. Another 13 stocks finished the session unchanged.

Notably, shares of Kiler Holding AS (IS:KLRHO) and EIS Eczacibasi Ilac Sinai ve Finansal Yatirimlar Sanayi ve Ticaret AS (IS:ECILC) rose to all-time highs during the session, with Kiler up 6.61% to 447.50 and EIS Eczacibasi climbing 5.14% to 128.90.


Commodities and currencies

In commodities trading, Gold Futures for April delivery were down 0.18% - a decline of 9.40 - to trade at 5,112.90 a troy ounce.

Crude oil for March delivery rose 1.24% or 0.75 to reach $61.38 a barrel, while the April Brent contract climbed 1.05% - an increase of 0.68 - to trade at $65.45 a barrel.

On the foreign exchange front, USD/TRY strengthened by 0.14% to 43.40, and EUR/TRY rose 0.73% to 51.93.

The US Dollar Index Futures moved lower, falling 0.66% to 96.22.


Implications and market context

Tuesday's session showed a clear divergence between individual winners and broader market weakness. While several mid-cap names advanced sharply and two reached record prices, overall sector pressure in Technology, Wood, Paper & Printing and Insurance weighed on the BIST 100, resulting in a net decline for the index.

Volume and breadth metrics reflected the negative tilt, with a larger number of falling stocks than rising ones. Commodity and currency moves were mixed, with energy contracts higher and gold modestly lower, and the lira slipping against both the dollar and euro.

Risks

  • Sector-led pressure in Technology, Wood, Paper & Printing and Insurance could continue to weigh on the BIST 100 - affecting index performance and investor sentiment.
  • A larger number of declining stocks versus advancers indicates potential breadth risk for the market - which may signal uneven participation across sectors.
  • Currency moves, including a stronger USD/TRY and higher EUR/TRY, could create FX-related headwinds for dollar-linked costs or earnings for local companies.

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