Berkshire eyes bigger stakes in Japan’s top trading houses, CEO tells Nikkei

Berkshire Hathaway CEO Greg Abel said the firm is considering increasing its stakes in Japan’s top five trading houses (Mitsubishi, Itochu, Mitsui, Sumitomo, Marubeni), building on its 9%–11% holdings and prior agreements to move beyond 10%. Shares jumped, with Mitsubishi and Sumitomo up nearly 5% on the news. Berkshire already owned a combined $35.37B in these names by end-2025 and received $862M in dividend payouts, with its largest position being Mitsubishi at a 10.8% stake worth $9.21B.

Analysis

The key mechanism here is not incremental earnings power; it is a lower equity-risk premium. A patient, price-insensitive anchor can tighten the discount rate on these conglomerates, which matters because their reported earnings are cyclical and opaque while their capital-return capacity is visible. If Berkshire keeps adding, the market is likely to re-rate the whole Japanese “capital allocator” complex, not just the five names, as investors infer that governance reform plus buybacks can sustain mid-teens ROE without a rerun of the late-cycle commodity boom.

Second-order winners are other Japan value proxies that can catch a spillover bid: banks, insurers, and broader trading-house-like conglomerates should benefit from a higher tolerance for balance-sheet intensity and cross-holdings being monetized. The biggest loser is the set of close substitutes without a Berkshire-style sponsor; once the event premium is concentrated, relative performance can diverge even if the macro backdrop is flat. The near-term risk is a reflexive pop that outruns fundamentals — if the move is only driven by a headline and not a disclosed accumulation path, it can fade within days.

Catalyst path: 1-3 months is about whether Berkshire files higher stakes or management responds with faster buybacks and capital recycling; 6-18 months is about whether these firms can actually lift ROE while the yen and commodity cycle remain supportive. The thesis breaks if USD/JPY strengthens materially from current levels and commodity-linked earnings roll over, because then valuation support has to come from multiple expansion alone. Consensus is probably underweighting how much of the upside is already in the businesses and overestimating how much of this trade is about growth versus ownership structure and capital discipline.

Key Decisions for Investors

• Long the Japan trading-house basket vs short EWJ or TOPIX: MITSY/ITOCY/MTSUY/SSUMY/MARUY over the next 1-3 months, targeting rerating continuation from the Berkshire signal; cut if the basket gives back ~50% of the event move or if no follow-on filing appears.
• Prefer a relative-value pair: long the five shosha basket / short Japanese exporters with weaker capital-return records, for a 3-6 month governance re-rating trade; thesis weakens if USD/JPY rallies sharply and the market rotates back to FX beta.
• For lower beta exposure, accumulate pullbacks in BRK.B rather than chase the Japanese names outright: the market may start valuing Berkshire’s Japan book as a persistent, high-quality public-equity portfolio; invalidated if the Japan stake stops growing on the next disclosure cycle.
• Watch for a spillover bid into Japanese banks/insurers (e.g., megabanks and Tokio Marine-type balance-sheet compounders) over the next 1-2 months; use as a confirmation trade only if trading houses hold gains after the initial headline fade.