Indonesia’s stock market experienced a severe sell-off after index provider MSCI announced it was considering removing the country from its Emerging Market classification and reclassifying it directly into its Standalone Market category. On Friday, October 16, the Jakarta Composite Index plummeted 11.6 percent, marking its steepest single-day decline since the 1998 Asian financial crisis. Panic selling persisted as trading reopened on Monday, with the index dropping an additional 3.9 percent and driving the cumulative two-day loss to approximately 15 percent.
The market turmoil highlights deep-seated structural issues within the domestic exchange, where shareholdings in many listed companies are tightly concentrated among a small circle of investors. With a scarce amount of stock genuinely available for public trading, even modest transaction volumes can trigger extreme price movements. Coordinated buying strategies can result in market manipulation and inflated valuations, creating a distorted picture of corporate worth that draws in foreign institutional investors and index funds at prices detached from genuine market demand.
Regulators have recently exposed specific instances of market manipulation. On October 16, Indonesia’s Financial Services Authority (OJK) revealed that an inquiry into trading involving Dian Swastatika Sentosa (DSSA), an entity linked to the Sinar Mas Group, identified planned and structured manipulation. According to OJK, individual and institutional investors executed these transactions through several brokerage firms. Although the regulator stopped short of establishing that the company's controlling shareholders directed the manipulation, the case underscored how regulated exchange trading can produce artificial valuations.
Similar concerns over distorted valuations arose following the 2023 initial public offering (IPO) of Barito Renewables Energy. Despite reporting modest earnings, the company's market capitalization expanded rapidly, temporarily surpassing Bank Central Asia, one of the nation's largest financial institutions. OJK later imposed penalties totaling Rp500 billion ($27.9 million) and Rp100 billion ($5.5 million) over irregularities connected to the IPOs of Barito Renewables and Petrindo Jaya Kreasi, both linked to businessman Prajogo Pangestu. Regulators found that public stock allocations were funneled to entities affiliated with controlling shareholders through mechanisms designed to mask ultimate beneficial owners. The fines targeted the perpetrators of the violations rather than the listed entities themselves.
Unusual equity transactions among major shareholders have also drawn scrutiny. In a filing involving Bayan Resources, founder Low Tuck Kwong and his daughter Elaine Low disposed of a combined 30.25 percent stake to PT Jhonlin Baratama, a firm tied to businessman Haji Isam. The shares were transferred at Rp2,588 each, representing a discount of roughly 80 percent compared to the prevailing market trading range of Rp13,000 to Rp14,000.
In response to MSCI’s initial downgrade warning in January, Indonesian authorities—including the Indonesia Stock Exchange (IDX), OJK, and the Central Securities Depository—introduced several regulatory reforms. These measures reduced the shareholding disclosure threshold from 5 percent to 1 percent, expanded investor classification categories from nine to 39, and established a roadmap to raise the minimum free-float requirement from 7.5 percent to 15 percent. Regulators also pledged to enhance beneficial ownership transparency, increase scrutiny of IPO share allocations, improve detection of highly concentrated holdings, and strengthen market enforcement.
Despite these formal reforms, market observers emphasize that regulatory announcements must be backed by effective enforcement. A key challenge stems from the fact that 60 to 70 percent of companies listed on the IDX are controlled by family-owned business groups. Complex corporate arrangements and nominee holdings can allow principal shareholders to maintain concealed control over free-float shares. Furthermore, long-standing ties between major conglomerates and political figures raise questions regarding regulatory independence and the willingness of authorities to penalize powerful business interests without suffering political or commercial pushback.
While OJK has earned recognition for pursuing high-profile enforcement actions against prominent corporate groups, questions remain regarding why market distortions persisted for years despite modern stock exchange surveillance systems designed to detect potentially coordinated transactions. OJK maintains that its investigations were underway prior to MSCI’s public warning. However, investors continue to seek full transparency on whether all penalized funds have been collected, who held ultimate responsibility for the infractions, what ongoing legal proceedings exist, and whether the individuals involved remain eligible to participate in the market.
