Istanbul Chief Public Prosecutor's Office brought an injunction against Mustafa Yazıcı's assets
Quick Look
- Within the scope of the fund investigation carried out by the Terrorism Financing and Laundering Crimes Investigation Bureau affiliated with the Istanbul Chief Public Prosecutor's Office, an injunction was imposed on all assets of Mustafa Yazıcı, the son of AKP Deputy Chairman of Political and Legal Affairs Hayati Yazıcı.
- In the decision, financial transaction restrictions were imposed on 30 people and their spouses and children on suspicion of stock manipulation and market fraud through funds in Borsa Istanbul.
AI-generated summary
Why It Matters
Within the scope of the fund investigation carried out by the Terrorism Financing and Laundering Crimes Investigation Bureau affiliated with the Istanbul Chief Public Prosecutor's Office, an investigation was conducted regarding suspicion of stock manipulation and market fraud through funds in Borsa Istanbul.
Within the scope of the investigation carried out by the Terrorism Financing and Laundering Crimes Investigation Bureau affiliated with the Istanbul Chief Public Prosecutor's Office and publicly known as the fund investigation, an injunction was imposed on all assets of Mustafa Yazıcı, the son of AKP Deputy Chairman of Political and Legal Affairs Hayati Yazıcı.
The following statements were included in the decision in question:
"Within the scope of the investigation numbered 2026/149004 carried out by our Chief Public Prosecutor's Office regarding the crimes of laundering property values arising from the crime regulated in Article 282 of the Turkish Penal Code numbered 5237 and violation of the Capital Markets Law numbered 6362;
There were reports to our Chief Public Prosecutor's Office that manipulative actions were carried out through the portfolio management sector (funds) in the shares traded on the Borsa Istanbul (BIST) Equity Market, our Chief Public Prosecutor's Office made ex officio investigations in this direction, some shares traded on the stock exchange increased approximately 100 times the share value, it was considered that this situation constituted an abnormal price movement, the majority of the shares were collected through funds, most of the shares traded through fund transactions were purchased on the market, and as a result of these purchases, both the share value of the relevant company was affected. both the increase and the fund values that purchased shares increased with the share price,
In Article 107 of Law No. 6362, the crime of Market Fraud is regulated as "those who buy or sell in order to create a false or misleading impression regarding the prices, price changes, supply and demand of capital market instruments..."; When the market value, capital, equity capital and periodic profit statements of the companies are examined as a whole, when the book value and PD/DD values of the relevant shares are taken into consideration, there is a price difference that can be described as a gap between them and the current traded share values,
Fund owners individually made purchases in the relevant shares, these purchases caused the share value to increase due to demand, these purchases were sold to the funds by the fund owners and managers, and this action caused both a rise in the share value and an increase in the fund value,
Although it is seen that the shares have increased in value, as stated above, the company is shown at a value hundreds of times the value it should be, this price increase is not related to the position and activities of the relevant companies, a significant amount of benefit has been obtained by providing an artificial increase, this situation gives rise to the crime of market fraud regulated in Article 107 of Law No. 6362, and in this context, there is a strong suspicion of crime that criminal proceeds have been obtained, as a matter of fact, the CMB Decision Body dated 17.09.2026 and In accordance with decision no. 57/1707, it was determined that 131 funds were closed for purchase and sale transactions at TEFAS.
"INCLUDING REAL PERSONS AND THEIR SPOUSES AND CHILDREN"
Following the determination in question, warrants were written to the relevant institutions to conduct research on the real persons whose clear identity information is stated below and the companies they represent. In the light of additional findings; The real persons listed below and their family members, including their spouses and children,
1-Taking the necessary precautions in terms of any transfer, assignment, sale, donation, mortgage/pledge establishment, account closure, high amount cash withdrawal, high amount EFT/transfer and similar transactions that reduce the assets that your institution and member organizations want to carry out,
2-In case a transaction of this nature is requested by the persons in question, obtaining the opinion of our Chief Public Prosecutor's Office before the transaction is carried out and informing your relevant units/member organizations that no disposition transaction should be carried out without asking the opinion of our Chief Public Prosecutor's Office,
3- Informing our Chief Public Prosecutor's Office without delay about suspicious transactions that are particularly out of ordinary activity, striking in terms of transaction amount or frequency, reducing assets or that can be considered collusive,
4-Announcing this memorandum to all member banks and notary offices by the Banks Association of Türkiye, Participation Banks Association of Türkiye and the Notaries Association of Türkiye, and conveying the information about the announcement to our Chief Public Prosecutor's Office,
5-The General Directorate of Land Registry and Cadastre, the General Directorate of Maritime Affairs and the General Directorate of Civil Aviation determine whether there are real estate, ships and aircraft registered in the names of the persons on the list and their spouses, and send the list of registered assets to our Chief Public Prosecutor's Office and take action in line with paragraphs (1) and (2) above in terms of the transactions to be carried out on these assets,
6-Freezing the Capital Market instruments in the accounts of the relevant persons,
7- In terms of requests for transactions that reduce the assets of the persons whose identity information is included in the list, listed in paragraph (1) above, and such transactions carried out, the Financial Crimes Investigation Board Presidency (MASAK) must be notified without delay within the scope of the Law No. 5549 on the Prevention of Laundering Proceeds of Crime, and the information regarding the notification must be forwarded to our Chief Public Prosecutor's Office,
You are kindly requested."
The names in question were listed as follows: Ali Göl, Ali Serhat Tüzün, Burak Sevindik, Caner Altaçli, Erol Demirbaş, Furkan Bezeklioğlu, Gökhan Koçyiğit, Gürsel Akça, Hakkı Ömer Gürün, Hasan Peker, Hüseyin Emre Güner, İdris Çakır, İhsan Çimen, Mesut Altan, Mesut Yalım, Mücahit Acaralp, Ogün Doğan, Osman. Sungur, Tahir Fatih Mutlu, Yasemin Yavuz Koçyiğit, Zülküf Kopuz, Alper Tunğa Sagu Burak, Fırat Kerim Ersoy, Tuncer Köklü, Ali Yöney, Ali Emre Ballı, Mustafa Yazıcı, Güven Çapan, Hayati Efe Oğuz, Mustafa Yönaç
What to Watch
AI outlook — possibilities, not facts
CMB may examine the financial transactions of individuals subject to an injunction decision and impose extra regulations.
Likely · Within weeks
The measure on Mustafa Yazıcı's assets will continue during the investigation.
Very likely · Within months
Open Questions
- What is Mustafa Yazıcı's exact role in these transactions?
- How soon will the precautionary decision be lifted?
- What are the criteria for reopening funds closed by the CMB?
- Is there detailed information about the spouses and children of the 30 people involved?







