Introduction
The call for JSE Reform in South Africa has intensified following Mantengu Mining’s shareholder disclosure and CEO Mike Miller’s detailed YouTube video. The company alleges a syndicate may have influenced market activity, targeting junior-listed firms with share-rigging, nominee accounts, and round-tripping. Mantengu’s 2024 stock plunge despite profitable results and a R500 million funding facility prompted an internal investigation, reportedly uncovering five hours of recordings, 500 pages of transcripts, and a delisted CEO’s testimony of coercion and extortion. These revelations highlight gaps in detection, oversight, and enforcement, emphasizing the urgent need for policy intervention, better whistleblower protection, and stronger safeguards against potential market abuse.
JSE Reform Highlighting Detection Failures
According to Mantengu, one of the most pressing issues driving the need for JSE Reform is systemic failure in detecting market manipulation. The syndicate allegedly exploited short-selling strategies to crash stock prices, combined with nominee accounts and round-tripping to mask ownership. These tactics reportedly allowed operators to avoid the 35% mandatory offer disclosure rules while maintaining control over share movements. Mantengu’s investigation indicates that such coordinated activity went unnoticed by regulators, enabling distressed conditions that facilitated asset acquisition at undervalued prices. Strengthening surveillance and improving real-time monitoring are critical steps toward preventing similar incidents in the future.
JSE Reform and Insider Accountability Gaps
Another focal point for JSE Reform is accountability among exchange insiders. Mantengu claims that whistleblower emails implicate two JSE board directors allegedly issuing instructions to manipulate the company’s stock, including “back off” orders when Mantengu’s investigation intensified and references to crypto payments. Miller reportedly submitted these findings to the JSE in February 2025, but according to the company, no action was taken. This highlights potential weaknesses in internal oversight and ethics enforcement. Improving transparency, establishing independent review committees, and enforcing strict conflict-of-interest policies could address these gaps effectively.
JSE Reform Exposes Law Enforcement Vulnerabilities
Mantengu’s experience with law enforcement underscores the importance of JSE Reform in protecting market integrity. After filing a Hawks case in March 2025, the docket was allegedly closed by a Randburg brigadier, forcing Mantengu to refile in Pretoria to avoid precincts the company considered “influenced.” These claims, if accurate, expose potential jurisdictional loopholes that could allow market manipulators to evade scrutiny. Implementing specialized financial-crime units and clearer procedural safeguards could reduce the risk of interference and ensure regulatory compliance is enforced uniformly across all jurisdictions.
JSE Reform and Whistleblower Protection
A central theme in Mantengu’s disclosure is the personal risk to whistleblowers. CEO Mike Miller reported two assassination attempts, including drone surveillance and a staged highway hijacking, allegedly linked to his public disclosures. While these remain allegations, they demonstrate the need for robust JSE Reform policies regarding whistleblower protection. Introducing independent hotlines, safe-harbour provisions, and secure reporting channels could safeguard individuals exposing suspected misconduct, allowing regulators to act on sensitive information without endangering personal safety.
JSE Reform Highlighting the Human Cost
Beyond technical and policy gaps, JSE Reform also addresses the human impact of alleged market manipulation. Mantengu’s investigation includes a delisted CEO who reportedly faced threats until he aided in the decline of his own company, receiving a luxury vehicle as compensation. These accounts suggest that market abuse may be coupled with intimidation, coercion, and rewards for compliance. Reform measures should consider the ethical and social dimensions of investor and executive protection, ensuring that those exposing wrongdoing or resisting manipulation are not placed in peril.
JSE Reform and Policy Whispers
Speculation in financial circles has connected tactics similar to those alleged in Mantengu’s disclosures with previous controversies, including the Moti Group’s alleged fraud strategies. While unverified, these parallels underscore the broader importance of JSE Reform. Market participants are increasingly aware that systemic vulnerabilities could allow repeated exploitation. Addressing policy loopholes, clarifying enforcement responsibilities, and strengthening regulatory frameworks could reduce the influence of any potential syndicates on market stability.
JSE Reform and the Need for Structural Policy Fixes
Mantengu advocates for several reforms to enhance transparency and reduce systemic risk. Recommendations include mandatory reporting of cryptocurrency payments, the establishment of independent whistleblower hotlines, and the creation of safe-harbour provisions for executives exposing misconduct. These measures form a comprehensive approach to strengthening governance and safeguarding investors. Until such reforms are implemented, Mantengu warns that listing junior companies on the JSE carries heightened risk, highlighting the necessity of proactive regulatory action and stricter oversight.
JSE Reform for Investor Confidence
Ultimately, the purpose of JSE Reform is to restore trust and stability to South Africa’s financial markets. By addressing detection failures, enforcing insider accountability, safeguarding whistleblowers, and strengthening law enforcement procedures, regulators can ensure that investors—particularly those in junior-listed companies—are protected. Mantengu’s disclosure serves as both a warning and a call to action, emphasizing the critical need for policy modernization, enhanced monitoring, and ethical enforcement to prevent market exploitation and preserve investor confidence.
FAQs
Q1: What does JSE Reform mean in the Mantengu context?
JSE Reform refers to policy updates and regulatory measures designed to prevent alleged market manipulation and protect investors.
Q2: Why is JSE Reform necessary?
JSE Reform is necessary to address detection failures, insider accountability gaps, and law enforcement vulnerabilities highlighted by Mantengu Mining.
Q3: Who benefits from JSE Reform?
Investors, junior-listed companies, and whistleblowers benefit from JSE Reform through enhanced market integrity, transparency, and safety protections.
Conclusion
The JSE Reform debate sparked by Mantengu Mining highlights urgent weaknesses in South Africa’s financial markets. Allegations of price manipulation, insider collusion, jurisdictional loopholes, and personal threats reveal systemic vulnerabilities that require immediate attention. Strengthening detection, improving whistleblower protection, and enforcing accountability are essential to restore investor trust. Until comprehensive reforms are implemented, listings on the JSE remain risky, emphasizing the importance of regulatory action to safeguard market integrity and ensure that investor confidence is maintained.

