Governance rules have cut Japan's listed subsidiaries to a third of their 2007 peak

An investor who buys the minority of a listed subsidiary at a discount is betting the parent eventually buys it in. Hitachi did that in 2009, absorbing five companies including Hitachi Information Systems as wholly owned subsidiaries through tender offers, and Toyota Motor followed in 2011 with Kanto Auto Works and Toyota Auto Body ^[9]; the Nomura survey does not give the prices paid in those offers. Perry Capital had played the demand version two years earlier, taking a large stake in NEC's semiconductor subsidiary and telling NEC in 2007 to unwind the parent-subsidiary listing ^[8].

Going from 417 subsidiaries in March 2007 to 139 means 278 have left the category in about eighteen and a half years, an average of roughly 15 a year ^[4]. The past year took out about 35 of them, since 139 after a decline of about a fifth implies something near 174 twelve months earlier ^[3]. Hold that rate and the remaining 139 lasts four years ^[5].

The 2021 revision of the corporate governance code by the Financial Services Agency and the Tokyo Stock Exchange changed the rate. It told listed subsidiaries to fill at least a third of their boards with independent outside directors, told Prime Market companies to make a majority of the board independent, and required a special committee to police conflicts between the parent and minority shareholders ^[10]. Directors dispatched from a parent do not count as independent, suitable outside candidates are hard to find, and the committee is more work. According to the Nikkei report, that left more executives skeptical about keeping subsidiaries listed ^[11]. The exchange had signalled the direction long before. In 2007 it said a parent-subsidiary listing was "difficult to conclude as a desirable capital policy" ^[6], pointing to parents interfering excessively in a subsidiary's management or maximising their own profit at the subsidiary's expense ^[7].

The next requirement takes effect in 2027, when disclosing the share of minority shareholders voting for and against each director appointment becomes mandatory. Until now only the overall vote per director had to be published, so a parent's own block could hide a weak result ^[13]. Nikkei said more subsidiaries could delist to avoid revealing low support from minority shareholders ^[14].

Parents pull decisions forward and the count drops hard before the 2027 meetings. That front-loads the payouts and leaves a residual of parents unwilling or unable to fund a buy-in. Or issuers simply publish the embarrassing number and stay listed. Japan's approach is indirect: it discloses votes to build public pressure instead of restricting the structure. The Korea Exchange, by contrast, has moved to prohibit parent-subsidiary listings with limited exceptions and to require minority consent under a 3% voting cap ^[16][15]. Or the realisation comes from the other side, as Strategic Capital attempted at Osaka Steel in June, asking the company to buy back every share held by its parent Nippon Steel; that proposal won 63% support and was not approved ^[12].

I would expect the count to be under 100 by the 2027 season, because the 35 that went in one year went before the disclosure rule was live. The evidence against me would be a flat Nomura count in the next two surveys. That would mean parents are choosing the awkward vote tally over the cash.