BIST Imposes Credit and Short‑Sale Ban on IEYHO, CWENE and HEDEF: Market Ripple Effect

Borsa Istanbul announced new restriction measures for Işıklar Enerji ve Yapı Holding (IEYHO), CW Enerji (CWENE) and Hedef Holding (HEDEF) shares.

The Restriction Framework: Credit and Short‑Sale Bans

IEYHO Introduces Gross Settlement and Credit Freeze

■Effective from the session start on August 10, 2026, IEYHO shares will be subject to a credit transaction ban and gross settlement.

■The existing short‑sale ban will remain in force during the same period.

■These measures will stay active until the session end on September 9, 2026.

CWENE and HEDEF Under the Volatility‑Based Trading System (VBTS)

■Starting August 10, 2026, CWENE and HEDEF shares will be completely prohibited from short‑selling and credit transactions.

■The restrictions will run through the session end on September 9, 2026.

■The decision follows the Capital Markets Board (CMB) approval of the VBTS.

Market participants can expect these measures to curb short‑term liquidity shocks and dampen volatility, while potentially reshaping long‑term risk appetites. The introduction of gross settlement for IEYHO may raise transaction costs and affect price discovery. Investors should consider rebalancing portfolios and adopting a cautious stance to mitigate short‑term fluctuations.