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Turkey authorities have remanded former Family and Social Services Minister Fatma Betül Sayan Kaya in custody as investigations intensify into a major investment fund scandal involving alleged stock market manipulation, insider trading and suspected organised criminal activities.
The arrest, which took place on Friday, November 6, 2026, represents another significant development in an investigation that has drawn prominent political figures, financial executives and former regulatory officials into a widening criminal probe.
Kaya, who previously served as deputy chairperson of Turkey’s ruling Justice and Development Party (AK Party), was arrested by an Istanbul court following questioning by prosecutors. She faces allegations of violating the country’s Capital Markets Law and belonging to an organisation established for criminal activities.
The investigation centres on suspicious financial transactions involving shares in Özata Denizcilik, a Turkish shipbuilding company, and the alleged manipulation of investment funds that triggered a major liquidity crisis in the country’s financial markets.
Kaya’s husband, İlyas Kaya, was also questioned in connection with the investigation but was released under judicial supervision. His release reportedly came with restrictions, including a travel ban.
The former minister’s arrest follows weeks of scrutiny over investment transactions that allegedly generated billions of Turkish liras shortly before regulators intervened in the troubled investment fund sector.
According to information reported by Reuters and Turkish media, prosecutors suspect that Kaya possessed confidential information capable of influencing the value of securities and used it in connection with transactions involving Özata Denizcilik shares.
The allegations have placed additional pressure on Turkey’s financial regulatory institutions and political establishment, particularly because the investigation has expanded to include former officials responsible for overseeing the country’s capital markets.
Kaya has previously denied wrongdoing alongside her husband, maintaining that their investment activities complied with applicable regulations.
The latest court decision means she will remain in custody while the criminal investigation continues. However, the allegations have not yet been established through a final criminal judgment.
How the Turkish investment fund scandal started
The investigation emerged following a major disruption in Turkey’s investment fund industry in September 2026.
The crisis developed after several investment funds experienced difficulties meeting requests from investors seeking to withdraw their money. The situation triggered concerns about liquidity, the valuation of securities and the possibility that certain stocks had been artificially inflated through coordinated trading activities.
Turkey’s Capital Markets Board, known locally as the Sermaye Piyasası Kurulu (SPK), subsequently ordered the liquidation of 131 investment funds managed by seven portfolio management companies on September 17.
The affected funds reportedly had approximately 455,000 individual investors, with combined assets estimated at ₺936.3 billion, equivalent to approximately $19.1 billion at the time.
The scale of the intervention raised questions about how the funds had been managed, how certain investments had generated unusually high returns and whether regulatory safeguards had been compromised.
Investigators began examining suspected market manipulation, insider trading, bribery and possible organised criminal activity involving financial institutions and individuals connected to the investment industry.
The investigation later expanded beyond fund managers and stock market participants to include former senior officials in financial regulatory institutions.
Authorities have also examined whether some individuals received confidential information that enabled them to make substantial profits before the market disruption became public.
The allegations have made the scandal one of the most significant financial investigations facing Turkey in 2026, particularly because of its potential implications for investor confidence and the credibility of the country’s capital markets.
Why former minister Fatma Betül Sayan Kaya was arrested
Kaya’s arrest is connected to investment transactions involving shares of Özata Denizcilik.
According to prosecutors, Kaya and her husband invested approximately ₺163.1 million in the company in April 2026 before selling their holdings several months later for approximately ₺2.17 billion.
The transactions reportedly generated substantial profits within four months, attracting attention because they occurred shortly before the regulatory intervention that triggered the wider investment fund crisis.
The couple’s transactions became a subject of public controversy in September after allegations were raised by an opposition politician.
Investigators subsequently examined the timing of the purchases and sales, the individuals involved in facilitating the transactions and whether the couple had access to information unavailable to ordinary investors.
One issue highlighted by prosecutors was the alleged transfer of shares directly to Tera Yatırım, a financial institution connected to the wider investigation.
According to the prosecution’s account, Kaya received payment on the same day the shares were transferred rather than through the standard two-business-day settlement process commonly used in securities transactions.
The arrangement reportedly allowed the proceeds to become available immediately.
Prosecutors also raised questions about Kaya’s contacts with executives associated with Tera Group, one of the financial groups being investigated over the investment fund crisis.
Authorities suspect that the timing and structure of the transactions may indicate that Kaya had access to confidential information concerning developments in the market.
The prosecution further alleged that information available to Kaya could have influenced investment decisions involving the shares.
These allegations formed part of the grounds presented to the court when prosecutors requested her detention.
Kaya and her husband have previously rejected accusations of receiving privileged information or trading based on confidential tips.
The couple also reportedly transferred approximately ₺1.86 billion in investment gains to an account designated by Turkey’s Savings Deposit Insurance Fund after the allegations emerged.
However, the transfer of money does not by itself determine whether criminal wrongdoing occurred. That question remains subject to the ongoing investigation and judicial proceedings. Reuters+2
Kaya’s husband released under judicial supervision
While the court ordered Kaya’s detention, her husband, İlyas Kaya, was released under judicial supervision following his questioning by prosecutors.
The authorities imposed restrictions on him, including a ban on international travel and requirements to report to the relevant authorities.
His release does not mean that investigators have completely cleared him of the allegations. He remains connected to the wider investigation and could face further questioning as prosecutors examine the financial transactions involving the couple.
Former Capital Markets Board chairman İbrahim Ömer Gönül was also questioned during the latest phase of the investigation.
Gönül, who previously headed Turkey’s main securities market regulator, was released under judicial supervision after appearing before the authorities. His restrictions reportedly include a travel ban and regular reporting requirements.
Investigators are examining whether Gönül properly performed his regulatory responsibilities while serving as chairman of the Capital Markets Board between April 2022 and April 2026.
The investigation into his activities focuses on allegations that regulatory oversight failures may have allowed suspicious investment activities to continue without appropriate intervention.
His case is particularly important because the Capital Markets Board is responsible for supervising Turkey’s securities markets, protecting investors and ensuring that market participants comply with relevant regulations.
The involvement of a former head of the regulator has therefore intensified concerns about the effectiveness of financial supervision during the period preceding the crisis.
More than 400 suspects linked to Turkey’s financial investigation
The investigation has continued to expand, with Turkish authorities identifying hundreds of suspects connected to suspected financial irregularities.
Justice Minister Akın Gürlek disclosed on November 3 that the investigation covered 433 suspects.
According to figures provided by the minister, 112 people were in pretrial detention, while another 186 were under judicial supervision. Arrest warrants had also been issued for 38 additional suspects who remained wanted by authorities.
The government has also imposed asset freezes and other financial restrictions affecting 359 individuals and 111 legal entities.
These measures indicate the scale of the investigation and the authorities’ efforts to identify individuals and organisations suspected of benefiting from the alleged manipulation.
The probe has reportedly extended into different levels of Turkey’s financial sector, including investment management companies, stock market institutions and regulatory agencies.
Former Borsa Istanbul General Manager Korkmaz Enes Ergun is among the prominent figures arrested in connection with the scandal.
Ergun was detained in October and subsequently remanded in custody over allegations involving bribery and membership of a criminal organisation.
His arrest added another important dimension to the investigation because of his previous position at Borsa Istanbul, the country’s principal stock exchange.
Other financial officials have also come under scrutiny as investigators examine whether individuals within the regulatory system helped facilitate suspicious transactions or failed to prevent them.
Justice Minister Gürlek has described the suspected activities as involving a wider criminal network rather than isolated financial misconduct.
He has also said authorities are examining the relationships between financial executives, market participants and individuals who may have benefited from the alleged manipulation.
The figures released by the justice minister show that the investigation is considerably broader than the case involving the former minister and her husband. Euronews+2
Investment fund crisis raises concerns over investor protection
The scandal has also raised serious questions about the protection of ordinary investors in Turkey’s financial markets.
The liquidation of 131 investment funds affected hundreds of thousands of investors who had placed their money in financial products managed by professional investment companies.
Investment funds generally pool money from different investors and use it to purchase financial assets such as shares, bonds and other securities.
Investors rely on fund managers to make decisions according to the fund’s investment objectives and applicable financial regulations.
However, when asset prices are artificially inflated or investment portfolios become exposed to excessive risks, investors can suffer substantial losses.
The September crisis demonstrated how problems within investment funds can spread beyond individual companies and affect confidence across a wider financial market.
When investors lose confidence in the accuracy of asset valuations or the ability of funds to meet withdrawal requests, pressure can quickly develop across the financial system.
Turkey’s regulatory authorities responded by ordering the liquidation of the affected funds and beginning investigations into suspected misconduct.
The government has also made efforts to recover money allegedly obtained through market manipulation and improve payments to affected investors.
According to figures announced by the government, approximately ₺97.3 billion had been paid to nearly 250,000 investors by October 30 as part of the recovery process.
The authorities have also pursued the recovery of cash, properties and shares allegedly connected to the suspected criminal activities.
These measures are intended to limit the financial consequences of the crisis and restore confidence among investors.
However, the recovery process could remain complicated because investigators are dealing with numerous individuals, financial institutions and transactions across different parts of the market.
The final financial impact will depend on the outcome of investigations, asset recovery efforts and the ability of the affected funds to meet their obligations to investors. Euronews+2
Political consequences for Turkey’s ruling AK Party
Kaya’s arrest also carries political implications because of her previous position within President Recep Tayyip Erdoğan’s ruling AK Party.
She served as Turkey’s Minister of Family and Social Policies between 2016 and 2018 and later became one of the party’s senior officials.
She also served as deputy chairperson of the AK Party before stepping down from the position in September 2026 after allegations surrounding her investment activities emerged.
Her departure from the party leadership came as the investment fund investigation began attracting increasing attention from opposition politicians and the media.
The case has created additional pressure on the ruling party because it involves a former cabinet minister at a time when the government is attempting to demonstrate that financial misconduct will be investigated regardless of the individuals involved.
President Erdoğan has publicly stated that those responsible for manipulating capital markets and obtaining unfair financial gains would be held accountable.
During his remarks on November 5, he said the government was monitoring the investigation and that the judiciary would take appropriate action against those found to have participated in illegal activities.
His comments followed the arrest of several prominent individuals connected to Turkey’s financial institutions.
The opposition has also criticised the handling of the scandal and called for greater parliamentary scrutiny of the financial activities and regulatory decisions that preceded the crisis.
On November 4, lawmakers from the AK Party and its parliamentary ally, the Nationalist Movement Party, rejected an opposition proposal seeking a parliamentary investigation into the investment fund scandal.
The proposal had called for closer examination of suspected stock market manipulation, investor losses and possible failures in regulatory oversight.
The rejection generated further political debate about transparency and accountability in the management of Turkey’s financial markets. Turkish Minute+2
What happens next in the investment fund investigation?
Kaya’s arrest is unlikely to bring the wider investigation to an immediate conclusion.
Prosecutors are expected to continue examining financial transactions, communications between suspects, relationships among investment companies and the possible movement of money connected to the alleged market manipulation.
The authorities will also need to establish whether confidential information was improperly obtained or shared and whether regulatory officials or financial executives knowingly facilitated suspicious transactions.
For Kaya, the immediate legal issue is her detention while the investigation proceeds. Her lawyers will have the opportunity to challenge the allegations through the available judicial procedures.
Her husband and other individuals released under judicial supervision will also remain subject to the restrictions imposed by the court.
The wider case could have significant consequences for Turkey’s investment industry, particularly if investigators establish that weaknesses in regulatory supervision allowed coordinated market manipulation to take place.
It may also lead to increased scrutiny of investment management companies, financial disclosures and the procedures used to monitor unusual stock market activity.
For investors, restoring confidence will require more than arrests and asset freezes. Authorities will need to demonstrate that financial markets are properly supervised, suspicious transactions are investigated and affected investors receive appropriate protection.
The arrest of a former minister illustrates how far the investigation has extended into Turkey’s political and financial institutions.
However, the legal process remains ongoing, and the accusations against Kaya and other suspects must be determined through the courts.
As investigators continue examining the alleged financial network behind the September crisis, attention will remain on whether the authorities can recover affected investors’ money and establish accountability across the institutions involved.
