Shin-Etsu's Chip Boom Papers Over a Chemicals Slump

Chugai Pharmaceutical's first half ran on two export lines: shipments of the haemophilia drug Hemlibra to majority owner Roche, which holds 59.89% of Chugai's shares, and shipments of the itch-and-skin-disease antibody Nemluvio to Switzerland's Galderma. Core operating profit for the six months through June rose 21.0% to ¥329.1bn, outpacing an already double-digit revenue increase. Japan's domestic drug-price controls kept home-market growth modest, and management left full-year guidance exactly where it stood at the start of the year.

What changed: Export sales to two overseas partners, not the domestic market, drove the profit jump.

Why it matters: Chugai's earnings increasingly depend on royalty and shipment income tied to Roche and licensing deals like Galderma's, rather than on Japanese sales still constrained by price controls.

The catch: Guidance for the full year is unchanged, so management isn't yet banking on the first-half pace continuing.

Soken Chemical & Engineering adopted a takeover-response plan on July 24 aimed at Axium Capital Pte. Ltd., a Singapore-based investor whose stake has climbed from 6.72% in November 2025 to 22.60% as of July 13, 2026, above the roughly 20% threshold needed to block special-resolution votes. The board says Axium has not disclosed what it wants. The plan sets notice periods and a board review window, run past an independent committee, before Axium can buy toward 23%. At Soken's June annual meeting, director nominees were approved with 76.00%-76.83% support despite Axium's opposition campaign.

Why it matters: A fund holding enough shares to block major votes, without stating its intentions, is exactly the scenario Japan's takeover-defense rules are built to slow down.

What to watch: Whether Axium clarifies its strategy before testing the plan's review window.

Japan Post Bank's domestically listed held-to-maturity bonds carried a ¥4.94tn unrealized loss as of June 30, 2026, equal to roughly 940% of last year's net profit. The figure covers only the exchange-listed portion of its held-to-maturity book, not its entire bond portfolio. The bank says its earnings and dividend forecasts for the year through March 2027 are unchanged.

Why it matters: A paper loss worth roughly nine times annual profit shows how far rate moves have pushed against one of the world's largest deposit-funded balance sheets, even though accounting rules keep it out of near-term earnings.

What to watch: Whether the loss stays unrealized or forces action if funding needs require selling into it.

Japan Post Insurance disclosed unrealized losses on part of its bond portfolio worth ¥4.46tn as of June 30, 2026, more than 26 times last year's net profit. The insurer says its earnings and dividend guidance for the year through March 2027 stands unchanged.

Why it matters: Alongside Japan Post Bank's own ¥4.94tn paper loss, the disclosure shows the same rate pressure running through both halves of the postal financial group's balance sheet.

The catch: Held-to-maturity accounting keeps the loss out of near-term earnings, but only as long as the bonds aren't sold before maturity.

Japan's Ministry of Justice opened a month-long public comment period, from July 24 to August 23, on a draft ordinance that would let every company, not just listed stock companies, mask part of a representative's or manager's home address on registration certificates and the online registry lookup service.

Why it matters: Lenders and dealmakers rely on that registry lookup for counterparty checks; wider address-masking changes what due-diligence teams can verify without a separate request.

What to watch: Whether the final rule, expected after the comment period closes August 23, extends the same masking option to investment partnerships and other non-company entities.

Japan's National Police Agency opened public comment on a rule governing how officers notify administrators after acting on computers used to attack 'critical' systems. Under the draft, police would email the administrator the IP address and a description of what was done, but only after the intervention is already over.

Why it matters: Companies whose servers get used in an attack, knowingly or not, would get an after-the-fact explanation rather than advance warning, changing how IT teams reconstruct what happened to their own systems.

What to watch: The comment period's close and whether the final rule sets any deadline for police to send the notice.