Stock Markets March 24, 2026

Istanbul market slides as BIST 100 falls 1.81% on broad sector weakness

Banking, insurance and basic metals lead declines while select stocks record extreme moves

By Derek Hwang
Istanbul market slides as BIST 100 falls 1.81% on broad sector weakness

Istanbul equities closed lower on Tuesday with the BIST 100 index finishing down 1.81%. Losses were concentrated in the Banking, Insurance and Basic Metals sectors. Market breadth favored decliners, while a handful of mid- and small-cap names posted the session's largest gains and losses. Key commodity and FX benchmarks moved higher for the dollar and oil, while gold ticked up modestly.

Key Points

  • BIST 100 finished the session down 1.81% as losses in Banking, Insurance and Basic Metals weighed on the index.
  • Top performers included Tekfen Holding, Ral Yatirim Holding and Margun Enerji; the latter reached an all-time high during the session.
  • Efor Yatırım registered a 52-week low, reflecting pronounced weakness among some small- and mid-cap names; overall market breadth favored losers (454 vs 150).

Istanbul shares ended Tuesday's session in negative territory as losses across several cyclical sectors pushed the BIST 100 lower by 1.81% at the close. The retreat was driven principally by weakness in the Banking, Insurance and Basic Metals sectors, which weighed on overall market performance.

Among individual stocks, the session's top performers included Tekfen Holding AS (IS:TKFEN), which climbed 5.12% - up 4.30 points to finish at 88.25. Ral Yatirim Holding AS (IS:RALYH) also posted notable gains, rising 4.37% or 6.70 points to close at 160.10. Margun Enerji Uretim Sanayi ve Ticaret AS (IS:MAGEN) advanced 4.32%, up 2.11 points to settle at 50.95 in late trade.

Conversely, several names registered sharp declines. Efor Yatırım Sanayi ve Ticaret A.Ş. (IS:EFOR) led the downtrodden group, sliding 9.94% or 1.01 points to close at 9.15. Reeder Teknoloji Sanayi Ve Ticaret AS (IS:REEDR) fell 9.47%, down 0.83 points to end at 7.93, while Kiler Holding AS (IS:KLRHO) dropped 8.82% or 10.80 points to 111.60.

Market breadth on the Istanbul Stock Exchange was tilted heavily toward falling names: 454 stocks declined versus 150 that advanced, and 15 finished unchanged. The session included a 52-week low print and an all-time high: shares of Efor Yatırım Sanayi ve Ticaret A.Ş. reached a 52-week low at 9.15, while Margun Enerji Uretim Sanayi ve Ticaret AS rose to an all-time high of 50.95.

Commodity and currency markets showed mixed moves. Gold Futures for June delivery were up 0.17% or 7.54 to $4,447.04 a troy ounce. In energy markets, May delivery crude oil rose 3.37% or 2.97 to $91.10 a barrel, and the June Brent contract increased 2.70% or 2.59 to trade at $98.51 a barrel.

On the foreign exchange front, the Turkish lira traded slightly weaker against the dollar and largely unchanged versus the euro in percentage terms. USD/TRY rose 0.11% to 44.35, while EUR/TRY edged down 0.05% to 51.47. The US Dollar Index Futures traded higher as well, up 0.39% at 99.11.

The session's data points highlight a market environment where sector-specific swings and individual stock volatility drove headline index movement. Banking, insurance and basic metals names contributed materially to the downbeat close, while selective gains in other names produced an uneven market picture.


Intraday highlights:

  • BIST 100 closed down 1.81%.
  • Leading gainers: TKFEN (+5.12%), RALYH (+4.37%), MAGEN (+4.32%).
  • Largest decliners: EFOR (-9.94%), REEDR (-9.47%), KLRHO (-8.82%).
  • Market breadth: 454 decliners, 150 advancers, 15 unchanged.

Risks

  • Sector concentration risk - declines in Banking, Insurance and Basic Metals could amplify index weakness and affect related corporate credit and commodity-linked exposures.
  • Individual equity volatility - several stocks experienced double-digit percentage moves intraday, highlighting potential liquidity and price risk for active positions.
  • Commodity and FX volatility - moves in oil, gold and USD/TRY may exert near-term pressure on companies sensitive to input costs or FX-denominated liabilities.

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