TLDR
- Berkshire raises Mitsubishi stake to 10.23%, deepening its Japan expansion
- Buffett rules out CSX acquisition despite speculation
- BNSF and CSX form new coast-to-coast freight partnership
- Berkshire sits on record $344B cash amid valuation concerns
- Leadership transition to Greg Abel remains in investor focus
Berkshire Hathaway Inc. (NYSE: BRK-A) closed at $755,280.00 on August 29, up 0.77%, marking a steady gain as Warren Buffett’s conglomerate expands its reach in Japan while securing a new U.S. freight rail partnership. The company’s Q2 2025 results showed cautious capital allocation, but investors remain focused on its $344 billion cash position and succession planning.
Berkshire Hathaway Inc. (BRK-A)
Mitsubishi Stake Raised to 10.23%
On Thursday, Mitsubishi Corp. confirmed Berkshire Hathaway increased its stake to 10.23%, up from 9.74% in March. The purchase, made through Berkshire’s insurance arm National Indemnity Company, underscores Buffett’s confidence in Japan’s trading houses.
Warren Buffett’s Berkshire Hathaway boosted its stakes in Mitsubishi Corp. and Mitsui & Co., underscoring confidence in Japan’s trading houses.
Berkshire raised its Mitsubishi holding to 10.23% from 9.74% in March, while also increasing its stake in Mitsui. pic.twitter.com/Qj7gfnN89F
— OutSmarting Markets (@itradeph) August 28, 2025
The investment is part of Berkshire’s broader Japan strategy, with holdings across Mitsui, Itochu, Sumitomo, Marubeni, and Mitsubishi. Collectively, these firms dominate Japan’s global trade networks in energy, metals, and food. Berkshire’s strategy leverages corporate governance reforms and favorable yen-denominated debt, with projected $812 million in annual dividends against $135 million in interest costs.
Rail Partnership Without Acquisition
Buffett put an end to speculation around a CSX acquisition after meeting privately with CEO Joseph Hinrichs on August 3. While Berkshire ruled out a bid, its BNSF unit and CSX quickly unveiled a new coast-to-coast freight partnership.
The move calms merger rumors sparked by Union Pacific’s $85 billion bid for Norfolk Southern. Still, news of no Berkshire-CSX deal sent CSX shares down 5%, while Union Pacific and Norfolk Southern also slipped. Berkshire’s own shares dipped slightly but recovered alongside the broader rail announcement.
Cash Pile, Valuation, and Leadership Transition
Berkshire’s Q2 results highlighted net income pressure and slowing insurance profits. Yet the company now holds $344 billion in cash, its largest ever. With valuations running high, Berkshire has continued to sell more stock than it buys, frustrating some investors eager for a large-scale acquisition.
Leadership transition remains a central theme. Warren Buffett, 95, continues as Chairman but has been steadily elevating Greg Abel, the heir apparent. Abel’s presence at the CSX meeting signals his growing influence over operational strategy. Investors are keen to see how much of Buffett’s disciplined approach Abel will maintain post-handover.
Bell Labs Acquisition Expands Subsidiary Network
Beyond Japan and rail, Berkshire quietly added Bell Laboratories, a Wisconsin-based rodent-control company, to its roster of subsidiaries in July. The acquisition reflects Berkshire’s preference for profitable, niche operators that deliver steady returns.
Valuation Outlook and Stock Performance
Analysts remain split on valuation. Simply Wall St estimates Berkshire could be undervalued by up to 30%, with a fair value range between $577,396 and $1.06 million per share.
Performance has been mixed relative to benchmarks:
- YTD return: +10.92% vs S&P 500’s +9.84%
- 1-year return: +7.54% vs S&P 500’s +15.53%
- 5-year return: +130.67%, strongly outperforming the S&P 500’s +84.16%
Despite short-term concerns, Berkshire’s long-term compounding remains a defining feature, with its diversified bets across Japanese trading houses, rail partnerships, and niche acquisitions positioning it for steady global growth.
