Introduction
Securities law in Turkey is the legal framework governing the issuance, offering, sale, trading, custody and supervision of securities and other capital market instruments. It is a critical field for investors, issuers, public companies, financial institutions, portfolio managers, brokerage firms, foreign funds and technology-based financial service providers. Turkish securities law determines how companies may raise capital from investors, how investors are protected, how public disclosure must be made, and how unlawful conduct such as market manipulation, insider trading or unauthorized investment services is sanctioned.
The principal statute is Capital Markets Law No. 6362, which was adopted on 6 December 2012 and published in the Official Gazette on 30 December 2012. The official legislative record confirms the law number, title, adoption date, Official Gazette date and Official Gazette number.
The purpose of Capital Markets Law No. 6362 is to ensure that capital markets operate and develop in a reliable, transparent, efficient, stable, fair and competitive environment while protecting the rights and interests of investors. The law applies broadly to capital market instruments, their issuance, issuers, public offerors, capital market activities, capital market institutions, exchanges, organized markets, market operators, central clearing institutions, central securities depositories, the Central Registry Agency and the Capital Markets Board of Türkiye.
For this reason, securities law in Turkey should not be considered only as a stock exchange issue. It covers shares, debt securities, lease certificates, warrants, certificates, investment funds, derivatives, public offerings, private placements, investment services, public disclosure, corporate governance, market abuse and, following recent amendments, certain crypto asset services.
Main Legal Framework of Turkish Securities Law
The legal framework of Turkish securities law is built mainly on Capital Markets Law No. 6362, the Turkish Commercial Code, CMB communiqués, Borsa İstanbul rules, Central Registry Agency procedures, clearing and custody rules, and other secondary regulations. Borsa İstanbul states that the legal framework of Turkish capital markets is mainly devised by the Capital Markets Law and the Turkish Commercial Code, together with detailed regulations such as CMB communiqués and stock exchange regulations.
This structure creates a layered regulatory system. The Capital Markets Law sets the main principles. CMB communiqués provide detailed rules. Borsa İstanbul determines listing and trading rules. The Public Disclosure Platform ensures electronic disclosure. The Central Registry Agency and clearing institutions support dematerialized securities, custody and settlement infrastructure.
For issuers, this means that a securities transaction must be examined under more than one source of law. A share offering, for example, may require compliance with corporate law resolutions, CMB prospectus rules, Borsa İstanbul listing requirements, public disclosure procedures and investor protection standards. For investors, this means that rights and remedies may arise not only from private law but also from capital market legislation.
Role of the Capital Markets Board of Türkiye
The Capital Markets Board of Türkiye, known as the CMB in English and SPK in Turkish, is the main regulatory and supervisory authority for Turkish securities markets. Its strategic objectives include enhancing investor protection, adopting international capital market norms, promoting transparency and fairness, modernizing market structure and improving capital market infrastructure.
The CMB’s duties, powers and responsibilities include performing the tasks assigned by Capital Markets Law No. 6362, controlling and supervising the compliance of capital market institutions, public companies, exchanges and self-regulatory organizations, ensuring timely, adequate and accurate public disclosure, determining principles for independent audit, rating, valuation and information systems audit, and cooperating with other financial regulatory authorities.
The CMB’s official legislation list includes important regulations such as the Communiqué on Prospectus and Issue Document, Communiqué on Sales of Capital Market Instruments, Communiqué on Shares, Communiqué on Debt Securities, Communiqué on Corporate Governance, Communiqué on Material Events Disclosure, Communiqué on Market Abuse, Communiqué on Investment Services and Activities, and Communiqué on Principles of Establishment and Activities of Investment Firms.
Therefore, securities law compliance in Turkey is closely connected to CMB practice. Issuers, investment institutions and investors must follow not only the wording of the law but also CMB communiqués, announcements, principle decisions and market guidance.
What Are Securities and Capital Market Instruments in Turkey?
In Turkish legal terminology, securities are part of the broader concept of capital market instruments. Capital market instruments generally include securities, derivative instruments and other instruments designated by the CMB. In practice, securities may include shares, bonds, bills, lease certificates, warrants, certificates and similar instruments that may be issued, offered or traded in the capital market.
The distinction between ordinary commercial instruments and capital market instruments is legally significant. If an instrument qualifies as a capital market instrument, its issuance, sale, advertisement, public offering or trading may require CMB approval, disclosure, registration, licensing or other regulatory compliance.
For issuers, the key question is whether the proposed financing method falls within securities law. A company cannot avoid capital market rules merely by using informal terms such as “partnership,” “profit-sharing,” “investment opportunity,” “token,” “membership certificate” or “pre-sale right.” If the economic substance involves raising money from investors through instruments that resemble securities or capital market instruments, Turkish securities law may become relevant.
For investors, the classification is equally important. If the instrument is subject to securities law, investors may benefit from capital market disclosure rules, regulatory supervision, market abuse protections and possible statutory remedies. If the instrument falls outside the regulated framework, investors may be exposed to higher contractual, enforcement and fraud risks.
Rules for Issuers: Securities Issuance in Turkey
Issuers are companies or other entities that issue capital market instruments. Their obligations depend on the type of instrument, the method of issuance and whether the issuance is public or non-public.
A company issuing shares, debt securities or other capital market instruments must first determine whether the transaction is a public offering, private placement, sale to qualified investors or another type of issuance. Each method has different legal consequences. Public offerings are subject to stricter prospectus, approval, disclosure and sales requirements, while non-public issuances may involve an issue document or other CMB procedures depending on the structure.
The CMB’s communiqués list shows that Turkish securities law contains separate regulations for prospectuses, sales of capital market instruments, shares, debt securities, lease certificates, asset-backed and mortgage-backed securities, covered bonds, warrants and certificates, foreign capital market instruments and investment funds.
For issuers, proper legal planning is essential before any securities issuance. Corporate approvals must be valid, capital increase procedures must be lawful, shareholder rights must be considered, financial statements must be reliable and disclosures must be accurate. If the issuer is already a public company, additional rules on material event disclosure, corporate governance, related-party transactions and shareholder protection may apply.
Public Offerings and Prospectus Obligations
Public offering is one of the most important areas of securities law in Turkey. A public offering generally involves inviting the public to purchase capital market instruments. Because the public is targeted, the law imposes strict disclosure and approval rules to protect investors.
The CMB’s legislation list includes the Communiqué on Prospectus and Issue Document II-5.1 and the Communiqué on Sales of Capital Market Instruments II-5.2 as core regulations for offerings and sales. The official CMB communiqués page also lists the publication dates and titles of these regulations.
A prospectus is not a marketing brochure. It is a legal disclosure document. It should provide investors with sufficient information about the issuer, securities, risk factors, financial condition, management, business activities, legal disputes, use of proceeds and rights attached to the securities.
For issuers, the prospectus creates serious responsibility. If the prospectus contains false, misleading or incomplete information, the issuer, directors, selling shareholders, intermediary institutions and other responsible persons may face legal consequences depending on the circumstances. For investors, the prospectus is one of the most important documents to review before investing in a public offering.
Private Placements and Qualified Investor Sales
Not all securities issuances in Turkey are public offerings. Turkish securities law also recognizes non-public issuance methods such as private placements and sales to qualified investors. These methods may be preferred when issuers seek institutional investors, faster execution or a more limited investor base.
However, private placement does not mean absence of regulation. Depending on the instrument and transaction structure, the issuer may still need CMB approval of an issue document, corporate resolutions, sale restrictions, investor classification procedures and compliance with relevant communiqués.
For investors, qualified investor status may mean greater responsibility. Professional and institutional investors are generally expected to have more financial knowledge and risk assessment capacity than ordinary retail investors. Therefore, they should conduct their own due diligence and review financial, legal and commercial risks carefully.
For issuers, the main risk is accidentally turning a private placement into a public offering. Broad advertising, social media announcements, general solicitation, public-facing websites or communications to an indefinite investor group may create public offering risk. Therefore, marketing and communication must be controlled.
Rules for Investors: Due Diligence and Risk Awareness
Investors in Turkish securities markets should understand that securities law provides protection against unlawful conduct, misleading disclosure and unauthorized services, but it does not guarantee profit. Investment risk remains with the investor unless there is a legally compensable violation.
Before investing in securities in Turkey, investors should review the prospectus, issue document, KAP disclosures, financial statements, risk factors, dividend policy, corporate governance structure, litigation disclosures and use of proceeds. Investors should also verify whether the investment service provider is authorized by the CMB.
The CMB’s mission materials state that intermediary institutions are required to obtain a license from the CMB in order to deal in securities transactions, and that the CMB determines minimum authorization conditions and examines each application before granting a license.
Retail investors should be particularly cautious about social media recommendations, unofficial price targets, Telegram or WhatsApp investment groups, guaranteed-return promises and persons claiming to provide special inside information. Such sources may be misleading, manipulative or unauthorized.
Public Disclosure and KAP
Public disclosure is a cornerstone of securities law in Turkey. Investors cannot make informed decisions unless public companies and market participants disclose material information accurately and promptly.
The Public Disclosure Platform, known as KAP, is the electronic system through which electronically signed notifications required by capital markets and Borsa İstanbul regulations are publicly disclosed. KAP states that all information and documents required to be publicly disclosed must be submitted to KAP under the relevant CMB framework, and that the system is operated by the Central Registry Agency’s Public Disclosure Services on a 7/24 basis.
KAP is designed to allow everyone to access correct, timely, fair and complete information about Borsa İstanbul companies through the internet simultaneously and at low cost. It also functions as an electronic archive for historical information.
Borsa İstanbul companies are required to disclose financial statements, material events and other events that must be publicly disclosed under CMB and Borsa İstanbul regulations through KAP. KAP also explains that material events generally include insider information and continuous information, and that material events or changes in previously disclosed material events must be disclosed immediately upon occurrence or upon becoming known.
Material Event Disclosure
Material event disclosure is essential for market transparency. If a public company enters into a major contract, faces significant litigation, changes management, decides on a capital increase, conducts a merger, acquires or sells important assets, or experiences a development that may affect the value of its securities, investors must be informed in accordance with applicable rules.
For issuers, the duty of disclosure requires internal discipline. A company must identify material developments quickly, assess whether disclosure is required, prepare accurate wording and submit the notification through the proper channel. Public companies should establish disclosure committees, internal reporting systems and legal review mechanisms.
For investors, material event disclosures are among the most reliable sources of information. They should be reviewed regularly, especially before significant investment decisions. Rumors should not be preferred over official KAP disclosures.
Corporate Governance Rules for Issuers
Corporate governance is another important part of Turkish securities law. Public companies must be managed transparently, accountably and fairly. Corporate governance rules protect shareholders, especially minority investors, against abusive management decisions, undisclosed related-party transactions and unequal treatment.
The CMB’s communiqués list includes the Communiqué on Corporate Governance II-17.1, the Communiqué on Dividends II-19.1, the Communiqué on Buy-Backed Shares II-22.1, the Communiqué on Takeover Bids II-26.1, and rules on voting by proxy and proxy solicitation.
For issuers, corporate governance compliance is not only a legal requirement but also a market confidence issue. Companies with transparent governance, reliable financial reporting, effective boards and fair shareholder practices are generally better positioned to attract institutional investors.
For investors, governance quality should be part of investment analysis. A profitable company may still create legal and financial risk if it has weak governance, opaque related-party transactions, controlling shareholder conflicts or poor disclosure practices.
Investment Services and Licensed Institutions
Investment services in Turkey are regulated activities. These may include receiving and transmitting orders, executing orders, dealing on own account, portfolio management, investment advice, underwriting, placement and custody services.
The CMB’s legislation framework includes the Communiqué on Principles Regarding Investment Services, Activities and Ancillary Services III-37.1 and the Communiqué on Principles of Establishment and Activities of Investment Firms III-39.1.
This means that investors should obtain securities services only from authorized institutions. Unauthorized investment services may expose investors to fraud, execution risk, custody risk and lack of regulatory protection. Issuers should also work with properly authorized intermediary institutions during offerings and securities transactions.
Investment advice is particularly sensitive. A person or entity providing personalized investment recommendations may need proper authorization. General financial education is different from regulated investment advice, but the line may be crossed when specific securities are recommended for purchase, sale or holding based on investor circumstances or commercial advisory activity.
Market Abuse, Insider Trading and Manipulation
Market integrity is a central concern of Turkish securities law. If prices are distorted by false information, coordinated trading, insider dealing or manipulative conduct, investors lose confidence and capital formation is harmed.
The CMB’s communiqués list includes the Communiqué on Market Abuse, the Communiqué on Obligation of Notification Regarding Insider Trading or Manipulation Crimes, and the Communiqué on Measures to Be Taken for Insider Trading and Manipulation Investigations.
Market manipulation may occur through artificial transactions, false orders, misleading statements, rumors, social media campaigns, pump-and-dump schemes or other conduct affecting prices or investor decisions. Insider trading generally involves using non-public, price-sensitive information to trade or obtain an unfair advantage.
For issuers, the key compliance measures include insider lists, confidentiality policies, trading blackout periods, controlled disclosure procedures and employee training. For investors, the key lesson is to avoid acting on rumors, inside information offers or coordinated manipulation schemes.
Securities Trading on Borsa İstanbul
Borsa İstanbul plays a central role in Turkish securities markets. It provides organized markets for the trading of capital market instruments and operates within the legal framework created by Capital Markets Law No. 6362, the Turkish Commercial Code, CMB regulations and exchange rules. Borsa İstanbul explains that Law No. 6362 restructured and rebranded the former İstanbul Stock Exchange as Borsa İstanbul, and that stock exchanges are organized to ensure trading in a reliable, transparent, effective, stable, fair and competitive environment.
For issuers, listing on Borsa İstanbul provides access to a broader investor base and liquidity, but it also creates continuous obligations. For investors, exchange trading provides transparency and market access, but it does not remove price volatility or investment risk.
Investors should understand the difference between legal compliance and investment performance. A listed security may still decline in value. A company may be fully compliant but commercially unsuccessful. Securities law protects market fairness and disclosure; it does not guarantee positive returns.
Dematerialized Securities, Custody and Registry
Modern securities markets rely on electronic records, custody systems, clearing and settlement infrastructure. In Turkey, dematerialized securities and investor records are connected to the Central Registry Agency and related capital market infrastructure.
KAP’s general information page identifies the Central Registry Agency as the operator and manager of KAP’s Public Disclosure Services and describes its role in electronic disclosure and access to company information.
For investors, registry and custody records are important because rights in securities are often evidenced and exercised through electronic systems. Dividend rights, voting rights, general assembly participation, pledge, attachment and transfer processes may depend on the accuracy of records.
For issuers, electronic systems impose operational obligations. Before initial public offerings or initial registration of participation certificates, companies and exchange traded funds must apply for electronic certificates, and KAP notes that electronic certificates are a prerequisite for listing or trading on Borsa İstanbul.
Foreign Investors in Turkish Securities Markets
Foreign investors may invest in Turkish securities through listed shares, debt instruments, funds, derivatives and other capital market instruments. Foreign issuers and financial institutions may also interact with Turkish investors through cross-border offerings, private placements or investment services.
However, foreign participation must be carefully structured. Turkish securities law may become relevant if securities are marketed to Turkish residents, if investment services are provided in Turkey, or if a foreign platform targets Turkish investors. The CMB’s communiqués list includes a communiqué on foreign capital market instruments, depositary receipts and foreign investment funds, which confirms that cross-border securities activity is addressed within the Turkish regulatory framework.
Foreign investors should also consider tax, foreign exchange, custody, anti-money laundering and beneficial ownership rules. Foreign issuers should obtain Turkish legal advice before marketing securities, funds, derivatives or crypto-related products to Turkish residents.
Crypto Assets and Securities Law Developments
A major recent development in Turkish capital market regulation is the inclusion of crypto asset service providers under the CMB’s regulatory and supervisory authority. Law No. 7518, published in the Official Gazette on 2 July 2024, amended Capital Markets Law No. 6362 and brought crypto asset service providers operating or intending to operate in Turkey within the CMB’s regulatory and supervisory framework.
The CMB announced that activities such as crypto asset trading, exchange, transfer, custody services, and the custody or management of wallets or private keys may fall within the scope of the law when performed as a regular occupation, commercial activity or professional activity. The announcement also states that persons who fail to comply with the obligations under the law may be subject to proceedings under Articles 99/A and 109/A.
This development is important for investors and issuers alike. For crypto investors, regulation may increase platform accountability but does not eliminate asset volatility. For crypto platforms, wallet providers and fintech businesses, licensing, custody, operational procedures, capital adequacy and customer protection rules must be carefully reviewed. The CMB’s current legal framework also lists communiqués on the establishment and operation of crypto asset service providers and their operating procedures and capital adequacy.
Liability Risks for Issuers
Issuers may face liability for misleading prospectuses, incomplete disclosures, inaccurate financial reports, unlawful public offerings, defective corporate approvals, failure to disclose material events, market abuse violations or breach of corporate governance rules.
Directors and managers should not approve securities documents casually. They must ensure that disclosures are accurate, complete and balanced. Financial information, risk factors, litigation, related-party transactions, debts, regulatory permits, material contracts and use of proceeds should be reviewed carefully.
If investors suffer losses due to false or incomplete disclosure, civil claims may arise. In addition, the CMB may impose administrative sanctions or take protective measures. In serious cases, criminal provisions may also become relevant.
Liability Risks for Investors
Investors may also face legal risks. Trading based on inside information, participating in manipulation schemes, spreading false rumors, coordinating artificial price movements or providing unauthorized investment advice may create administrative, civil or criminal exposure.
Investors should avoid Telegram, WhatsApp or social media groups that encourage coordinated buying or selling, promise guaranteed returns, claim access to inside information or manipulate market sentiment. Even retail investors may become part of an unlawful market abuse investigation if they knowingly participate in manipulative conduct.
Investors should also preserve evidence when they suffer harm. Account statements, order records, call recordings, KAP disclosures, prospectuses, screenshots, correspondence and transaction histories may be crucial in securities disputes.
Securities Disputes in Turkey
Securities disputes in Turkey may arise between investors and brokerage firms, investors and issuers, shareholders and public companies, regulators and market participants, or counterparties in securities transactions. Common disputes include unauthorized trading, unsuitable investment products, defective public offering disclosures, misleading prospectuses, market manipulation, insider trading, portfolio management negligence, custody problems and unlawful public fundraising.
The proper legal route depends on the facts. Some cases may require a CMB complaint. Others may involve civil litigation, commercial litigation, criminal complaint, arbitration or administrative proceedings. A CMB investigation may support a claim, but compensation generally requires separate legal analysis and proof of damage, causation and liability.
Because securities disputes often involve financial complexity, expert evidence is usually important. Price movements, investor profiles, transaction timing, disclosure dates and market data may determine the outcome.
Practical Compliance Checklist for Issuers
Issuers should review the following issues before entering Turkish securities markets: whether the instrument qualifies as a capital market instrument, whether the transaction is a public offering, whether a prospectus or issue document is required, whether corporate approvals are valid, whether financial statements are reliable, whether material contracts and litigation have been reviewed, whether related-party transactions are properly documented, whether marketing materials comply with CMB rules, whether KAP and disclosure obligations are prepared, and whether post-issuance corporate governance systems are in place.
Issuers should also establish internal policies for insider information, public disclosure, investor relations, board approvals, employee trading and crisis communication. Securities compliance should be treated as a continuous governance function, not as a one-time filing requirement.
Practical Checklist for Investors
Investors should verify whether the issuer is public, whether the offering document is approved where required, whether the intermediary institution is authorized, whether disclosures are available through KAP, whether financial statements are audited, whether risk factors are clear, whether the investment product is suitable for their risk profile, and whether any return promise is realistic.
Investors should also avoid making decisions solely based on social media, rumors or unofficial investment groups. Official disclosures, prospectuses, financial statements and licensed professional advice should be prioritized.
Conclusion
Securities law in Turkey is a comprehensive legal system designed to regulate securities issuance, public offerings, trading, disclosure, investment services, investor protection and market integrity. Its main legal foundation is Capital Markets Law No. 6362, supported by CMB communiqués, Borsa İstanbul rules, KAP disclosure infrastructure and related capital market regulations.
For issuers, Turkish securities law creates a structured path for raising funds through shares, debt securities and other capital market instruments. However, this path requires accurate disclosure, CMB compliance, valid corporate approvals, proper prospectus preparation, fair sales procedures and ongoing public company obligations.
For investors, Turkish securities law provides important protections against misleading disclosure, unauthorized investment services, market abuse and unfair practices. However, investors must understand that legal protection does not eliminate market risk. Securities may lose value even when the issuer and market participants comply with the law.
For foreign investors and international financial institutions, Turkish securities law requires careful analysis of cross-border offerings, marketing activities, investment services, custody, disclosure and regulatory authorization. For fintech and crypto asset businesses, the post-2024 amendments make CMB compliance especially important.
In conclusion, Turkish securities law is not merely a technical regulatory field. It is the legal foundation of trust in Turkish capital markets. Companies, investors and financial institutions should obtain professional legal advice before issuing securities, investing in complex products, providing investment services, launching public offerings or engaging in cross-border capital market transactions involving Turkey.
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