Berkshire Hathaway’s partnerships and solutions business marks the next phase of growth for Tokio Marine Holdings, in line with the company’s “strongest full-year financial results” when excluding cross-shareholding gains.
The strategic alliance, announced in March 2025, connects Tokio Marine with one of the world’s most respected re/insurance and investment organizations, driven by a long-term view and deep shared values around insurance, underwriting discipline and capital management.
Brad Irick, managing executive officer and international co-head of Tokio Marine Holdings, said on the company’s recent earnings call that the partnership was not driven by necessity but was intended to fundamentally enhance Tokio Marine’s existing capabilities.
“I don’t think it’s a question of needing Berkshire Hathaway, I think the question is does it enhance the capabilities that we have? And absolutely it does. I think it enhances flexibility, it opens up potential deal possibilities for us that we might not have had before.
“It also creates some flexibility for the number of deals. While that may not be a size factor, it may be the flexibility to do multiple deals. So, I think we had considerable ability to do M&A before, and I think it’s enhancing that ability. What are the better partners that we may need to really focus on,” he said.
Irick continued: “When I talk about scale, I also always want to come back to the fact that we generally believe in culture, strategy, and not fringe benefits. Cultural fit in M&A is more important than the numbers we talk about. That mentality underlines our success.”
The collaboration enhances Tokio Marine’s capital and structural flexibility through its reinsurance framework.
National Indemnity Company (NICO), Berkshire Hathaway’s insurance arm, acquired a 2.5% stake in the Japanese insurance company as part of a multi-tiered deal. The investment amount is 287.4 billion yen, approximately US$1.8 billion.
“This long-term financial commitment reflects Berkshire’s view of Tokio Marine’s quality and trajectory,” said Simon Spitalny, value enhancement strategist in Investor Relations and Shareholder Relations (IR/SR).
The second part of the collaboration involves Nico joining Tokio Marine’s reinsurance group through a whole-account quota share arrangement, providing pro-rata reinsurance capacity across the company’s entire account.
“This strengthens our reinsurance position, particularly for natural risk exposures, in a way that is both stable and less cyclically sensitive than traditional market reinsurance areas,” Spitalny explained.
Adding: “Third, we will partner with NICO on global M&A, which combines our proven record of acquisitions with Berkshire Hathaway’s capital strength and expands the scope of opportunities we can pursue.
“This partnership is built on shared values of underwriting discipline, long-term orientation and a joint management approach.”
While specific ceded premium percentages and geographic breakdowns were not disclosed, leadership noted that this arrangement creates future flexibility and the impact is expected to be felt as they revise their reinsurance programs.
Going forward, Tokio Marine expects to have the ability to redeploy more than $10 billion into transactions over the next 12 to 18 months, citing favorable conditions, Irick said.
A highly disciplined approach will be maintained, prioritizing cultural and strategic alignment over numbers to ensure “any new business invited to join the family will be a good fit and able to continue its track record of success.”

