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ARTICLE · 04 AUGUST 2026

Sermaye piyasası hukuku bülteni / Sayı 2026-1

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Türk sermaye piyasalarında 2026 yılının ilk yarısında yaşanan düzenleyici dönüşümler, jeopolitik krizlere karşı alınan acil tedbirlerden kripto varlık platformlarının yetkilendirilmesine, yatırımcı sınıflandırmasından fiili dolaşımdaki pay hesaplama yöntemlerinin güncellenmesine kadar geniş bir yelpazede gerçekleşti. SPK'nın bu dönemde

TurkeyFinance and Banking
Omer Collak
Omer Collak
Okkes Sahan
Okkes Sahan
Emre Açıkgöz
Emre Açıkgöz
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Bu bülten, Sermaye Piyasası Kurulu’nun (“SPK” veya “Kurul“) 2026 yılının ilk altı ayında aldığı altı önemli karar ve düzenleyici işlemi ele almaktadır. Jeopolitik kriz tedbirlerinden elektronik defter sistemine, yatırımcı sınıflandırmasından kripto varlık geçiş takvimine, fiili dolaşımdaki pay oranı hesaplamasından bankaların yurt dışı faaliyet sınırlarına uzanan bu kararların ortak noktası, piyasa istikrarını koruma refleksiyle sektörel düzenleme araçlarının eş zamanlı olarak kullanılmasıdır.

Bültende ilk olarak, ABD ve İsrail’in İran’a yönelik askeri operasyonlarının ardından Kurul’un aldığı acil piyasa tedbirleri yer almaktadır. Bu kapsamda, Borsa İstanbul pay piyasasında açığa satışın dört ay süreyle yasaklanması ve kredili işlemlerde özkaynak koruma oranının %20’ye kadar indirilmesi, ardı ardına sekiz kez uzatılarak 29 Haziran 2026’ya dek sürdürülmüştür. Aynı dönemde, görece daha teknik ama pratikte etkisi az olmayan bir gelişme yaşanmış; Elektronik Ticari Defter Sistemi (“ETDS

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