Türk Sermaye Piyasasıdaki Son Gelişmeler- Ağustos 2023

Mersis is an electronic trade registry, which is highly popular and a significant e-portal for attorneys and companies.

The information relating to Turkiye is provided for background purposes only. The information presented herein has been extracted from and is presented on the authority of various public official documents and private publications.

SPK, halka açık olmayan ortaklıkların halka arz başvurularını ilan edilen sıradan bağımsız olarak önceliklendirmek üzere üç alternatif kriter belirledi

The Capital Markets Board of Türkiye has introduced comprehensive regulatory reforms affecting hedge funds and portfolio management companies, implementing new investment diversification requirements, graduated ownership caps based on free-float ratios, enhanced capital adequacy standards, and stricter personnel qualifications. These changes, effective from August 2026, establish tiered compliance deadlines and fundamentally reshape the operational framework for Turkish portfolio managers.

The Capital Markets Board of Türkiye ("CMB"), by its decision dated 6 February 2023, had prohibited short-selling transactions in the equity markets of Borsa İstanbul A.Ş. ("BIST").

Borsa Istanbul’s BIST 100 index came under significant selling pressure over three consecutive trading sessions between 15-17 September 2026. The index closed down 5.54% on 16 September, a move that triggered Borsa Istanbul’s index-linked circuit breaker, and negative momentum continued into the morning of 17 September. The sell-off was primarily triggered by a default at Pusula Portföy Yönetimi A.Ş., a portfolio management company, which failed to meet investor redemption requests from certain funds it manages in a timely manner. A similar liquidity problem emerged at Tera Portföy Yönetimi A.Ş., and this situation put pronounced pressure on the shares of both companies as well as on broader market indices.

Turkey's Capital Markets Board has introduced a comprehensive new framework for calculating free float ratios of publicly traded companies on Borsa Istanbul. The regulation establishes detailed criteria for determining which shareholdings should be excluded from free float calculations, including direct and indirect ownership structures through funds and other listed companies.

With its decision No. 57/1708 dated 17.09.2026, the Capital Markets Board (the “CMB”) set out the liquidation procedures for the 131 investment funds established by Tera, A1 Capital, Atlas, Bulls, Hedef, Pardus and Pusula Portföy Yönetimi, whose liquidation had been ordered under its previous decision, and updated the relevant list of funds in the same decision.

29 Mayıs 2024 tarihli Resmî Gazete’de yayımlanan 7511 sayılı Kanun ile Türk Ticaret Kanunu’na eklenen Geçici 15. Madde kapsamında, sermayesi öngörülen asgari tutarın altında kalan anonim ve limited şirketler için geri sayım başladı.

On 16 September 2026, the money market funds founded by Pusula Portföy Yönetimi A.Ş. defaulted after failing to meet the cash redemption requests received from investors, triggering a sharp sell off on Borsa Istanbul. The BIST 100 index lost 5.54% that same day and hit a circuit breaker; the selling soon spread to Tera Portföy funds as well. It became apparent that the problem was not confined to those two firms but also extended to Hedef, Atlas, A1 Capital, Pardus and Bulls Portföy.

SPK, halka açık olmayan ortaklıkların halka arz başvurularını ilan edilen sıradan bağımsız olarak önceliklendirmek üzere üç alternatif kriter belirledi

Borsa Istanbul’s BIST 100 index came under significant selling pressure over three consecutive trading sessions between 15-17 September 2026. The index closed down 5.54% on 16 September, a move that triggered Borsa Istanbul’s index-linked circuit breaker, and negative momentum continued into the morning of 17 September. The sell-off was primarily triggered by a default at Pusula Portföy Yönetimi A.Ş., a portfolio management company, which failed to meet investor redemption requests from certain funds it manages in a timely manner. A similar liquidity problem emerged at Tera Portföy Yönetimi A.Ş., and this situation put pronounced pressure on the shares of both companies as well as on broader market indices.

The Capital Markets Board of Türkiye (“CMB” or the “Board”), through its principle decision No. i-SPK.15.2 (dated 03.09.2026 and numbered 54/1614) (“Resolution”), has lowered to 3% the minimum shareholding disclosure threshold under the Material Events Disclosure Commu-niqué No. II-15.1 (“Communiqué”). The Reso-lution will apply as from the end of the day on 11.09.2026.

With its decision No. 57/1708 dated 17.09.2026, the Capital Markets Board (the “CMB”) set out the liquidation procedures for the 131 investment funds established by Tera, A1 Capital, Atlas, Bulls, Hedef, Pardus and Pusula Portföy Yönetimi, whose liquidation had been ordered under its previous decision, and updated the relevant list of funds in the same decision.

Türkiye Emisyon Ticaret Sistemi Yönetmeliği (“Yönetmelik”), 27 Ağustos 2026 tarihli ve 33353 sayılı Resmî Gazete’de yayımlanarak aynı tarihte yürürlüğe girmiştir. Yönetmelik ile 7552 sayılı İklim Kanunu (“İklim Kanunu”) uyarınca Türkiye Emisyon Ticaret Sistemi’nin (“ETS”) kapsamı sera gazı emisyon izni, izleme, raporlama ve doğrulama, tahsisatlandırma ve piyasa işleyişine ilişkin temel kuralları düzenlemektedir.

On 16 September 2026, the money market funds founded by Pusula Portföy Yönetimi A.Ş. defaulted after failing to meet the cash redemption requests received from investors, triggering a sharp sell off on Borsa Istanbul. The BIST 100 index lost 5.54% that same day and hit a circuit breaker; the selling soon spread to Tera Portföy funds as well. It became apparent that the problem was not confined to those two firms but also extended to Hedef, Atlas, A1 Capital, Pardus and Bulls Portföy.

The European Commission initiated a voluntary initiative under the AI Act to facilitate early compliance and encourage information sharing among companies.

Recent Developments in Turkish Capital Markets

On 27 August 2026, Turkish Personal Data Protection Authority (“DPA”) published a public announcement clarifying its Personal Data Protection Board’s (“Board”) Principal Decision No. 2026/921 of 29 April 2026 on the processing of biometric data for employee attendance tracking.

The Türkiye Emissions Trading System Regulation (the “Regulation”) was published in the Official Gazette No. 33353 dated August 27, 2026, and entered into force on the same date. Pursuant to the Climate Law No. 7552 (the “Climate Law”), the Regulation sets out the fundamental rules governing the scope of the Türkiye Emissions Trading System (“ETS”), greenhouse gas emissions permits, monitoring, reporting and verification, the allocation of allowances, and the operation of the market.