TOKYO, JAPAN — November 10, 2026 — Warren Buffett’s Berkshire Hathaway is returning to Japan’s debt market, but the latest move by the American investment giant is exposing a dramatic change in the cost of borrowing in the world’s fourth-largest economy.
Berkshire Hathaway, now led by Chief Executive Officer Greg Abel, is marketing a new yen-denominated bond offering at wider credit spreads than those offered during its previous fundraising in April, Bloomberg reported Tuesday.
The development comes as Japanese bond investors demand higher compensation for lending money amid rising government bond yields, tightening financial conditions and uncertainty surrounding the Bank of Japan’s monetary policy.
For Berkshire, the latest financing effort is particularly significant because the conglomerate has built an enormous portfolio of Japanese investments, including stakes in five of the country’s most influential trading houses.
But there is a bigger story behind the bond offering.
As Japan moves away from decades of extraordinarily cheap money, could rising borrowing costs begin challenging the financial strategy that helped Berkshire generate billions of dollars in gains from Japanese stocks?
Berkshire Returns to Japan’s Bond Market as Borrowing Costs Rise
According to Bloomberg’s November 10 report, Berkshire Hathaway is testing wider spreads in its latest Japanese bond transaction.
A credit spread represents the additional return investors demand above a reference interest rate to compensate for factors including credit risk, liquidity and market conditions.
When spreads widen, a borrower generally must offer a higher yield relative to the relevant benchmark to attract investors.
For Berkshire, this means its latest fundraising effort is entering a more expensive environment than the one it encountered earlier in 2026.
The company appointed Mizuho Securities and BofA Securities to arrange the offering, Bloomberg reported on November 9.
The transaction is Berkshire’s first yen bond sale attempt since April and would represent its second yen-denominated issuance under Greg Abel’s leadership if successfully completed.
Berkshire’s preliminary securities filing, dated November 9, outlines plans for three series of yen-denominated senior unsecured notes.
However, the filing initially left the final principal amounts, coupons and pricing information blank.
That means the company’s proposed borrowing structure is documented, but the completed transaction’s final terms should not be treated as established until pricing is announced.
Berkshire Raised $1.7 Billion in Its Previous Japanese Bond Sale
Berkshire has already demonstrated its ability to raise substantial financing from Japanese investors.
In April 2026, the conglomerate sold ¥272.3 billion, approximately US$1.7 billion, in yen-denominated bonds.
The offering consisted of six tranches with maturities ranging from three years to 30 years.
It was among Berkshire’s largest yen bond transactions since the company began issuing debt in the Japanese market in 2019.
According to Bloomberg’s April report, Berkshire’s 10-year notes were priced at a spread of 90 basis points over the relevant benchmark and carried a coupon of 3.084%.
By comparison, a 10-year bond issued in November 2025 carried a coupon of 2.422%.
The difference illustrates how Berkshire’s borrowing environment has changed.
However, coupon rates and credit spreads are not interchangeable. A coupon is the contractual interest paid on a bond, while a spread measures the yield premium over a benchmark.
Both measures are important when evaluating how much borrowing costs have increased.
The November 10 marketing levels reportedly indicate that investors are seeking an even wider spread than in April.
The final pricing will determine whether Berkshire accepts those terms and how much additional compensation bondholders ultimately receive.
Why Berkshire Is Borrowing in Japanese Yen
Berkshire’s use of yen-denominated bonds is closely connected to its long-term investments in Japan.
The conglomerate owns substantial stakes in five major Japanese trading houses:
- Mitsubishi Corporation
- Mitsui & Co.
- Itochu Corporation
- Marubeni Corporation
- Sumitomo Corporation
These companies operate diversified businesses spanning energy, commodities, industrial production, infrastructure, food and global trade.
Berkshire began building its positions years ago under Warren Buffett, who identified the trading houses as attractive long-term investments.
One advantage of borrowing in yen is that it helps match the currency of Berkshire’s liabilities with the currency of its Japanese investments.
This approach can reduce certain foreign-exchange risks.
If Berkshire owns yen-denominated assets and has yen-denominated obligations, movements in the Japanese currency can affect both sides of the balance sheet.
That does not eliminate currency or refinancing risk, but it can help manage exposure more effectively than financing the entire portfolio in US dollars.
The company’s approach has been examined in WWC ONE MEDIA’s earlier report, Berkshire’s $15.4 Billion Japan Bet Grew to More Than $35 Billion — Now Greg Abel May Buy Even More.
At the end of 2025, Berkshire reported that its Japanese trading-house holdings had a combined cost basis of approximately $15.382 billion and a market value of about $35.368 billion.
That represented almost $20 billion in unrealized gains before accounting for dividends received.
The trading houses also paid Berkshire approximately $862 million in dividends during 2025.
These historical figures help explain why Japan remains strategically important to the conglomerate.
Berkshire’s New Bonds May Help Refinance Existing Debt
One of the most important details comes from Berkshire’s November 9 preliminary prospectus.
The company stated that it expected to use the net proceeds for general corporate purposes, including refinancing existing yen-denominated senior notes.
These include:
¥73.4 billion in 0.955% senior notes due November 27, 2026, and ¥23 billion in 0.203% senior notes due in 2027.
Combined, those two outstanding issues represent ¥96.4 billion in principal.
The proposed refinancing is significant because replacing older, lower-coupon debt in today’s higher-rate environment may increase financing costs.
The November transaction should therefore not be interpreted automatically as evidence that Berkshire is preparing another large Japanese stock purchase.
Although Berkshire has continued expressing enthusiasm for Japanese investments, the company’s own filing identifies refinancing among the intended uses of proceeds.
The final allocation of capital will depend on the amount raised and subsequent corporate decisions.
Greg Abel Is Continuing Warren Buffett’s Japan Strategy
The latest debt offering comes during an important leadership transition at Berkshire Hathaway.
Warren Buffett stepped down as chief executive at the end of 2025, handing operational leadership to longtime deputy Greg Abel.
Buffett remains closely associated with the conglomerate’s investment philosophy, but Abel is now responsible for directing its overall business strategy.
Japan has become one of the most visible tests of continuity under that leadership.
In September, Abel indicated that Berkshire intended to maintain its investments in the five Japanese trading houses for decades.
He also left open the possibility of purchasing additional shares when suitable opportunities arise.
The conglomerate has previously secured permission to hold more than 10% of the trading houses, giving it flexibility to expand those positions.
However, permission to increase ownership should not be confused with a commitment to buy a specific additional number of shares.
The new bond sale likewise does not establish that Berkshire has finalized further equity acquisitions.
What it does demonstrate is that the company continues to access Japanese financial markets despite the changing interest-rate environment.
Japan’s Era of Ultra-Cheap Money Is Ending
For decades, Japan maintained exceptionally low interest rates in an effort to combat deflation and support economic growth.
That environment made the yen attractive as a financing currency for companies and international investors.
But the situation has changed dramatically.
The Bank of Japan raised its policy interest rate to 1.25% in September 2026, its highest level in approximately 31 years.
The decision followed growing evidence of wage increases, inflationary pressures and changing conditions in the Japanese economy.
Higher policy rates can push borrowing costs upward, particularly when investors expect additional tightening.
Long-term government bond yields have also risen sharply.
Japan’s benchmark 10-year government bond yield recently moved above 3%, reaching levels not seen for roughly three decades.
That change affects not only the government but also companies seeking financing from domestic bond investors.
Corporate debt is generally priced relative to market benchmarks.
Consequently, a combination of higher benchmark yields and wider credit spreads can substantially increase borrowing costs.
WWC ONE MEDIA previously analyzed the monetary-policy shift in Japan Raises Rates to 31-Year High, but Yen Falls as Stocks Rally.
The article explains how Japan’s move away from exceptionally low interest rates is reshaping expectations across currency and bond markets.
Japanese Bond Investors Are Becoming More Selective
The backdrop for Berkshire’s latest transaction is an increasingly demanding corporate bond market.
According to reporting carried by The Japan Times and Quartz, Japanese companies reduced new bond issuance after a heavy supply of corporate debt in October.
That surge contributed to wider credit spreads as investors demanded greater compensation.
Seeking Alpha’s coverage reported that domestic corporate bond spreads widened from approximately 45.67 basis points in May to 52.37 basis points in November.
The figures refer to broader market conditions, not Berkshire’s individual bond pricing.
Still, they help explain why even a highly recognizable international borrower might encounter more expensive funding.
Investors must decide whether the additional yield offered by corporate bonds is attractive compared with Japanese government securities and other available investments.
As government bond yields increase, relatively safe alternatives can become more appealing.
That may force corporate issuers to offer more attractive terms.
For Berkshire, the challenge is less about proving that the company is financially viable and more about finding an acceptable price for its borrowing.
Wider spreads do not automatically mean investors believe Berkshire is approaching financial distress.
They can also reflect changes in liquidity, interest-rate expectations, market supply and demand.
Japan’s Growing Debt Burden Adds Another Layer of Uncertainty
Japan’s rising borrowing costs are also creating challenges for the national government.
The country carries one of the largest public-debt burdens among advanced economies.
For many years, extremely low interest rates helped contain the cost of financing that debt.
But higher yields can gradually increase debt-servicing expenses as existing government obligations mature and are replaced with new borrowing.
Japanese budget officials have considered using an assumed interest rate of 3.8% when estimating future debt-service costs for fiscal 2027.
That planning assumption should not be confused with the actual yield on every Japanese government bond.
Nevertheless, it illustrates the government’s concern about the possibility of persistently higher financing costs.
The fiscal implications were explored in Japan’s Debt Bill Is About to Hit a Record — and Rising Interest Rates Are Making It Worse, published by WWC ONE MEDIA.
Rising sovereign yields can influence corporate financing throughout Japan, including offerings from foreign companies such as Berkshire.
What the New Bond Offering Means for Japan’s Financial Markets
The significance of Berkshire’s latest transaction extends beyond the conglomerate itself.
Because Berkshire is a well-known international issuer with an established history in Japan, its financing terms can provide an indication of prevailing investor appetite.
A successful bond sale could demonstrate that Japanese financial institutions remain willing to lend substantial amounts to high-profile foreign borrowers.
However, the required pricing premium may reveal how much more expensive it has become to raise funds.
For companies considering acquisitions, infrastructure expansion or debt refinancing, that difference can influence investment decisions.
Berkshire’s ability to access the market is not necessarily representative of smaller or lower-rated borrowers.
A company with weaker finances may have to offer considerably higher yields or delay borrowing altogether.
The changing market conditions could also have implications for Asian capital flows.
Reuters reported on November 6 that foreign investors had purchased approximately ¥2.36 trillion in Japanese bonds during the week ended October 31.
That represented the largest weekly inflow since March 21.
The data highlight continuing international interest in Japanese fixed-income assets despite volatility in other financial markets.
But those flows should not be interpreted as direct demand for Berkshire’s new securities.
They are a separate indicator of the broader investment environment.
Could Rising Rates Threaten Berkshire’s Japan Investment Returns?
Berkshire’s long-term Japan strategy has benefited from a combination of equity gains, dividends and historically attractive financing.
Rising interest rates may reduce some of the advantages associated with new yen borrowing.
But they do not automatically undermine the profitability of Berkshire’s Japanese holdings.
The five trading houses continue operating businesses that generate income across multiple industries.
Their financial performance depends on factors including commodity demand, global trade, capital allocation and operating profitability.
For Berkshire, the impact of rising borrowing costs will depend partly on how much debt needs refinancing, the rates agreed upon and the income generated by its Japanese investments.
A higher borrowing cost could reduce the difference between dividend income and financing expenses on relevant positions.
However, Berkshire’s existing bonds may retain their contracted coupons until maturity.
The company also has substantial financial resources and business operations beyond its Japanese portfolio.
A wider spread on one bond offering is therefore not sufficient evidence that its overall investment strategy is failing.
The more useful question is whether the long-term benefits of yen financing remain attractive as Japan’s monetary environment continues changing.
Bank of Japan’s Next Move Could Be the Bigger Test
Investors are closely watching whether the Bank of Japan will continue raising rates.
In November, BOJ Governor Kazuo Ueda acknowledged that Japan’s underlying inflation was broadly consistent with the central bank’s 2% objective, while emphasizing uncertainty about maintaining price stability.
Market expectations have consequently focused on the possibility of another rate increase in December.
A further increase could affect government bond yields, corporate financing conditions and the yen.
But the effects would depend on investor expectations and the central bank’s guidance.
A widely anticipated rate hike may have less impact than an unexpected policy shift.
WWC ONE MEDIA discussed the outlook in Japan’s Inflation Hits 2% as BOJ Chief Warns Price Stability May Not Last — But Could a December Rate Hike Shock Global Markets?.
For Berkshire, the BOJ’s decisions could influence the cost of future fundraising even after the latest bond transaction has been completed.
The Bigger Picture: Is Japan Still an Attractive Place to Borrow?
Berkshire Hathaway’s latest yen bond marketing effort underscores the transformation taking place in Japan’s financial markets.
The country is gradually leaving behind an era when borrowing costs were exceptionally low and domestic investors had limited opportunities to earn meaningful yields.
Higher interest rates are creating new challenges for borrowers while potentially improving returns available to bond investors.
For Berkshire, the changing environment comes after years of successful Japanese investments.
Its holdings in the country’s five major trading houses have produced substantial unrealized gains and dividend income.
The conglomerate has also repeatedly demonstrated its willingness to raise money in yen to support its financial strategy.
But the next phase may require greater attention to financing costs.
The crucial test is whether Berkshire can continue securing attractive funding terms while balancing debt refinancing, potential investment opportunities and currency exposure.
As Berkshire Hathaway tests wider spreads in its latest yen bond offering, one question now hangs over Japan’s financial markets: Can Greg Abel preserve Warren Buffett’s winning Japan strategy in a world where cheap yen financing is disappearing?
