Why Buffett's Successor Is Doubling Down on Japan's Trading Giants

Greg Abel has a $170 billion problem—and he's not worried about it. The new CEO of Berkshire Hathaway just doubled down on Warren Buffett's biggest international bet: Japan's sprawling trading houses.

The Buffett Legacy Play

Since 2020, Berkshire has quietly built stakes of over 9% in Japan's "Big Five" trading houses: Mitsubishi Corp, Mitsui & Co, Itochu, Sumitomo Corp, and Marubeni. The total investment? Roughly $50 billion at current valuations.

In Saturday's annual shareholder letter, Abel made his position crystal clear: "These companies' diversified business portfolios and global networks will create long-term value." He specifically highlighted their exposure to natural resources, infrastructure, and renewable energy—sectors he believes will drive future growth.

The market's reaction on Monday was mixed. Itochu jumped 2.1% while Mitsubishi Corp slipped 0.8%, reflecting investor uncertainty about the investment thesis.

Trump's Tariff Threat

Here's where it gets interesting. These Japanese conglomerates are exactly the kind of global trade facilitators that Trump's tariff policies could squeeze. They're middlemen in commodity flows, infrastructure deals, and supply chains—all potential targets for protectionist measures.

Yet Abel sees opportunity where others see risk. "Uncertain times highlight the value of diversified business models," he argued. "These companies' adaptive flexibility could actually become an advantage."

It's a contrarian bet that says something profound about Berkshire's investment philosophy under new leadership.

The Conglomerate Paradox

Japanese trading houses are business model anomalies—sprawling entities that own everything from coal mines to convenience stores. In the U.S., such conglomerates have largely been broken up or fallen out of favor. Investors typically prefer focused, "pure play" companies.

But Abel is betting that this very complexity becomes a strength in volatile times. When one sector struggles, another can compensate. When geopolitical tensions disrupt traditional trade routes, these companies can pivot.

The question is whether Western investors will embrace this Eastern approach to business diversification.