Japanese trading companies, led by the five major sogo shosha, saw their shares rally across morning and afternoon trading on Thursday, following comments from Berkshire Hathaway CEO Greg Abel that the group intends to retain its stakes in these firms for decades and may even increase its holdings. The broader wholesale trading sector emerged as one of the top-performing segments within the Topix index on Thursday.

Mitsubishi Corp. shares jumped as much as 4.5%, reaching their highest level since May, while Sumitomo, Mitsui & Co Ltd, Itochu Corp, and Marubeni all advanced by more than 3%. Berkshire Hathaway, long steered by the legendary investor Warren Buffett, has held roughly 10% stakes in each of these five companies for over six years.

Deepening Japan Presence: 'Mega Inc.' Secures Long-Term Capital Backing

Abel, who officially succeeded Warren Buffett as CEO in January, told CNBC in an interview on Wednesday that Berkshire's positions in these trading giants represent a "long-term investment" that the company plans to hold for decades. Since Berkshire first disclosed its stakes in the five houses in 2020, the share prices of these Japanese firms have consistently benefited from their association with Buffett's investment strategy.

Takuma Ikeda, a financial markets analyst at Tokai Tokyo Intelligence Laboratory, noted that Abel's latest vote of confidence "could rekindle investor interest" in Japan's major general trading companies. The Topix wholesale trading index, which includes the five houses, has risen around 23% year-to-date, modestly outpacing the Topix's roughly 20% gain.

The sprawling business empires of these trading houses span daily consumer goods, energy, and infrastructure resources, alongside extensive international trade and import-export operations along with substantial overseas investment income. As a result, they remain highly sensitive to fluctuations in the yen and commodity prices. In recent months, rising raw material costs driven by geopolitical tensions in the Middle East have continued to benefit these firms.

Mitsubishi Corp., Mitsui & Co Ltd, Itochu Corp, Sumitomo, and Marubeni all operate vast global trading networks covering energy, metals, food, machinery, chemicals, consumer goods, and infrastructure. Their profits increasingly derive from overseas assets, domestic trading, project equity, and supply-chain operations rather than relying primarily on commodity exports as in years past.

In March, Berkshire also announced a strategic investment of approximately 2.5% in Tokio Marine Holdings Inc., a prominent Japanese insurer, with plans for active collaboration on large-scale global trade and utility transactions. Shares of Tokio Marine Holdings Inc. rose as much as 3.2% on Thursday.

In a separate interview with Nikkei, Abel indicated that Berkshire's investment conglomerate could even expand its stakes in these trading giants, noting that the trading houses have already proposed specific plans for long-term joint investment goals. Since the company's initial disclosure in 2020, these Japanese stocks have consistently ridden on the coattails of the Buffett association.

Leveraged Yen-Denominated Debt: Betting on Resources, Cash Flow, and Governance Reform

Berkshire's investment in Japan's five major trading houses is not a short-term play on commodity prices but rather a long-term capital allocation strategy combining value investing, low-cost financing, and cross-border industrial synergy. Berkshire began acquiring stakes in Itochu, Marubeni, Mitsubishi Corp., Mitsui & Co Ltd, and Sumitomo as early as July 2019, publicly disclosing these positions in 2020.

For investors, the bullish thesis on the five trading houses has evolved beyond the commodity cycle into a multi-factor pricing framework encompassing "global asset portfolio + governance premium + shareholder returns + Berkshire permanent capital." At the time, Buffett viewed the five houses as having diversified holding structures similar to Berkshire's own, with initially attractive valuations, prudent capital allocation, consistent dividends, reasonable buybacks, and restrained executive compensation practices.

This investment also employs a distinctively Berkshire-style "yen assets-yen liabilities" matching strategy: as of the end of 2024, the cumulative cost of the five-house stakes stood at $13.8 billion, with a market value of $23.5 billion. Projected dividends for 2025 are approximately $812 million, while the annual interest cost on the associated Berkshire yen-denominated debt is only about $135 million. The core of this approach is not simple low-rate arbitrage, but rather using yen financing to reduce currency mismatch, capturing a healthy positive spread while participating in the compounded returns generated by Japan's corporate governance reforms, rising resource prices, global infrastructure spending, and improved shareholder returns over the long term.

By issuing yen bonds, Berkshire finances its Japanese investments and achieves a natural currency hedge through its "yen assets + yen liabilities" structure. The positive aspects of this model include significantly mitigating the impact of yen depreciation on dollar-denominated returns, leveraging Japan's relatively low borrowing costs, covering bond interest payments through trading house dividends while earning a positive spread, and retaining the long-term compounding benefits of share price appreciation, dividends, and buybacks. In essence, this approach "does not heavily bet on yen exchange rates, but focuses on corporate cash flow and capital appreciation."

Abel's explicit commitment to holding these stakes for decades effectively eliminates any "succession discount" from the market's concerns that Berkshire might exit its Japanese investments following Buffett's departure. Meanwhile, Berkshire's strategic ~2.5% stake in Tokio Marine Holdings Inc., with plans for collaboration in reinsurance, global investments, and mergers and acquisitions, signals that its Japan strategy is evolving from passive shareholding to active industrial synergy.