Japan Daily Briefing

Berkshire Hathaway committed $16.8 billion across two trading sessions in the first week of June, Toyo Keizai reports in its investment analysis — the largest two-day deployment since Warren Buffett himself accelerated purchases during 2022 market dislocations. New CEO Greg Abel's capital deployment pace directly signals that the Japan value playbook — heavy in sogo shosha and high-yield-of-capital industrial names — will continue and potentially accelerate post-succession, removing the key concern that Berkshire's Japan thesis was personally Buffett's rather than institutionally Berkshire's. For TOPIX value investors, this is the strongest possible institutional endorsement: watch Mitsubishi Corp, Marubeni, Mitsui, Sumitomo, and Itochu ADRs for follow-through buying from global value funds following Berkshire's lead.

Quantinuum, one of the world's leading quantum hardware companies, signed a strategic memorandum of understanding with Mitsubishi Electric to develop advanced industrial engineering and design applications using quantum computing, via Manila Times from a PRNewswire release. This partnership connects Japan's most R&D-intensive industrial conglomerate with the quantum computing ecosystem at a commercialization-inflection moment — Mitsubishi Electric's manufacturing processes (robotics, factory automation, power systems) are among the most promising early-use-case segments for quantum advantage in industrial simulation. For Japanese semicap investors who track R&D partnership activity as a leading indicator of capex allocation, this deal provides context for Tokyo Electron, Disco, and Renesas to benefit from upstream quantum-adjacent demand in the 2027-2030 horizon.

US S&P 500 and Dow Jones futures fell overnight as President Trump stated he 'couldn't care less' about Iran negotiation outcomes, Benzinga reported — a geopolitical comment that spooked energy-price and risk-appetite positions simultaneously. Japan's market decoupled from the US futures weakness, however, with iShares MSCI Japan +0.57% and the yen-hedged ETF +0.94% — confirming that global investors are treating Japan as a semi-independent value play with domestic catalysts (BoJ normalization, corporate governance reform) rather than a pure US-beta market. The decoupling thesis matters for asset allocation: watch whether Japan maintains positive territory on days when US futures are red — sustained decoupling would accelerate the active Japan-versus-US rotation trade that Blackstone's Asian PE fund and other institutions are constructing.