BIST 100 plunges 9.94% in October

The benchmark index, which stood at 11,947.18 points at the end of September, recorded a dollar-denominated loss of 11.62%. Among major sector indices, the industrial index suffered the steepest decline, falling 16.82%, followed by the financial index with a 15.11% loss and the services index with a 14.39% drop. The banking index declined 5.15%, making it the least affected among the major sector indices tracked.

Among individual stocks, US Yatırım Holding (USHOL) was October's top performer, surging 50.76%, followed by Metropal Kurumsal Hizmetler (MCARD) with a 39.96% gain, Creditwest Faktoring (CRDFA) with a 37.86% increase, and Ersu Gıda (ERSU) with a 35.90% rise. Meanwhile, Özata Denizcilik (OZATD) recorded the month's steepest decline, plunging 88.99%. Destek Finans Faktoring (DSTKF) fell 88.98%, Işıklar Enerji (IEYHO) dropped 88.96%, and Tera Yatırım Teknoloji Holding (TEHOL) lost 88.76%. October's figures highlighted widespread selling pressure across Borsa Istanbul and increasingly significant differences in individual stock performance.