BIST 100 closes down 5.54% at 13,122.58, wiping ₺1.32 trillion off Borsa İstanbul as circuit breaker halts trading; asset manager Pusula Portföy failed to meet ₺55bn in redemptions

Borsa İstanbul's BIST 100 index closed 16 September 2026 down 5.54% at 13,122.58 points, extending a two-day decline and putting it on course for its biggest such drop since March 2025, with 590 of 600 listed companies trading lower and 99 index constituents in negative territory. Roughly ₺1.32 trillion was wiped off the value of Turkey's stock market in the selloff, which came on the day of the Federal Reserve's rate decision, and the exchange's circuit breaker was triggered, temporarily halting trading. The slump is attributed to Turkish asset manager Pusula Portföy failing to meet ₺55 billion in investor redemption requests sitting on illiquid names, sparking fears of a broader liquidity crisis across the country's fund industry, with investors reported to have pulled $1.13 billion from funds.

Detected & updated continuously · Source: Nebula