BIST All-100 Index Falls 3.25% to 66,502 Points

The BIST All-100 (XTUMY) index declined 3.25% on Thursday, September 17, 2026. The index stood at 66,502.43 points at 6:10 p.m. after moving between a high of 67,071.04 and a low of 65,582.44. Its previous close was 68,733.27 points.

BIST All-100 Index Falls 3.25% to 66,502 Points
Liberal TR Haber Merkezi
Publish: 17.09.2026
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The BIST All-100 Index (XTUMY), which tracks a broad segment of stocks traded on Borsa Istanbul, came under significant selling pressure on Thursday, September 17, 2026. As of 6:10 p.m., the index stood at 66,502.43 points, down 2,230.84 points from its previous close.

The XTUMY index recorded a daily decline of 3.25%. It opened the session at 65,944.90 points and climbed to an intraday high of 67,071.04. The day’s lowest level was recorded at 65,582.44 points.

The index had closed the previous session at 68,733.27 points and remained below that level throughout much of the trading period. The decline of 2,230.84 points reflected a broad weakening in the index during the session.

The BIST All-100 is among the broader market indicators used to track the performance of a wide group of stocks listed on Borsa Istanbul. Thursday’s decline showed that selling pressure was present across a broad part of the market.

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Liberal TR Haber Merkezi
Liberal TR Haber Merkezi
A digital news platform delivering developments in Türkiye and the world to its readers with an objective and principled perspective. Liberal TR Haber Merkezi.
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