Regulator in Tokyo moves to ban insider trading in crypto market
Japan’s Financial Services Agency (FSA) plans to ban insider trading in the cryptocurrency market, according to an Oct. 15 report in Nikkei, cited by CoinPost. The forthcoming rules would amend the Financial Instruments and Exchange Act to explicitly bar trading based on nonpublic information, with violators subject to administrative fines.
Tightening oversight through the SESC
The FSA intends to hammer out the details through a working group by year’s end and aims to submit a bill amending the securities law during the 2026 ordinary session of the Diet. Under the proposal, the Securities and Exchange Surveillance Commission (SESC) would gain authority to investigate suspected violations and could recommend fines or criminal charges in cases of alleged insider trading.
Experts say Japan’s system of self-regulation, led by cryptocurrency exchanges and the Japan Virtual and Crypto Assets Exchange Association (JVCEA), lacks sufficient data monitoring. The government hopes that granting the SESC oversight of crypto transactions will help ensure fairer trading and make the market more attractive to investors.
The new rules would target the use of confidential information, such as advance knowledge of a token listing or a major security flaw. Yet applying insider-trading standards to crypto may prove difficult. Many tokens have no clear issuer, making it harder to determine whose information could move markets or who should be held accountable.
Crypto investing has surged in Japan, with domestic trading accounts quadrupling in five years. The FSA now aims to update its rules to reflect that digital assets are traded mainly as investments, not as payment instruments.
Leadership transition brings policy uncertainty
Japan’s plan to strengthen oversight of cryptocurrencies coincides with a period of political transition. Prime Minister Shigeru Ishiba has announced his intention to step down but remains in office for now. According to CNBC, Sanae Takaichi, newly elected president of the ruling Liberal Democratic Party (LDP), would typically be expected to assume the premiership, but the coalition’s collapse has upended what would otherwise be a routine transition. The parliamentary vote to choose Japan’s next leader, initially slated for Oct. 15, has been postponed to Oct. 21.
In the wake of the split, the main opposition Constitutional Democratic Party (CDP) is reportedly seeking Komeito’s support for a joint prime ministerial candidate. Yuichiro Tamaki, leader of the Democratic Party for the People (DPP), is seen as a potential consensus choice. The ruling LDP currently holds 196 seats in the lower house, but a united opposition could command a larger bloc.
Tamaki has also drawn attention in crypto circles. About a year ago, he proposed cutting taxes on cryptocurrency gains to 20%, a flat rate similar to that on stock profits, during his campaign against Ishiba. At present, crypto gains in Japan are classified as miscellaneous income and taxed at progressive rates that can exceed 50% when local levies are included.
Metaplanet’s Bitcoin strategy tested amid market shifts
Against that backdrop, Metaplanet, often dubbed Japan’s answer to the U.S. firm Strategy for its aggressive Bitcoin (BTC) accumulation, is under pressure as its valuation slips below the value of its crypto holdings. The company’s market-to-BTC net asset value (mNAV) ratio fell to 0.99 on Oct. 14, dropping below 1 for the first time. The metric compares the company’s market value with its BTC holdings, and a reading below 1 means the stock is trading at a discount to its BTC reserves.
The decline comes after Metaplanet paused BTC purchases for the past two weeks. As of Oct. 1, the company held 30,823 BTC on its balance sheet.
