Korea and Japan Move to Stem Global Bond Rout
TREE NEWS reports: South Korea’s finance ministry announced on October 1 that it will cut government bond issuance for the month by 5 trillion won, reducing the planned total to 12 trillion won, and said it would consider further reductions if needed. Separately, Japanese Prime Minister Sanae Takaichi said Tokyo will “appropriately control the annual total issuance of government bonds” by taking both the initial and supplementary budgets into account. The two announcements point in the same direction: with global yields repeatedly setting record highs, Asia’s two largest developed economies are actively shrinking supply to relieve pressure on their domestic bond markets.
Korea: Tapping Excess Tax Revenue to Trim Auctions
The Korean finance ministry is funding the reduction with better-than-expected tax revenue. The cuts are distributed across maturities: 1 trillion won from 2-year notes, 800 billion won each from 3-year and 5-year notes, 700 billion won each from 10-year and 30-year bonds, and 200 billion won from 50-year bonds.
For actual October issuance, 12 trillion won will be sold through competitive bidding by primary dealers, with an additional 500 billion won issued via bond swaps. The government also plans to buy back roughly 3.5 trillion won of 2-, 3-, 5-, and 10-year bonds that have passed their original issue date but not yet matured. Market participants expect further cuts across maturities in November and December, with total full-year supply reduction potentially exceeding 10 trillion won.
Japan: Takaichi Promises Issuance Control, Addresses FX Dispute
Takaichi’s remarks covered both debt management and currency policy. On bonds, she said Japan will “appropriately control the annual total issuance of government bonds” by considering the initial and supplementary budgets together. On the yen, she said she has told President Trump that a weak yen is a problem, while stressing that “the foreign exchange market is determined by multiple factors” and that “Japan’s economic policy is not aimed at manipulating foreign exchange.” She added that the policy goal is to boost the competitiveness of Japan’s economy, which would strengthen market trust in the yen. She also said food consumption tax cuts are expected to be reflected in sales prices.
Global Bond Market: Multiple Pressures Converge
On October 1, the US 10-year Treasury yield rose 4 basis points to 5.348%, breaking its 2007 high and reaching the highest level since 2002. The 30-year yield also touched its highest since 2002. The UK 30-year gilt yield rose to 6%, the first time since March 1998. French government bond yields hit an 18-year high, with the France-Germany spread widening to its widest since June 2012. Japan’s 10-year yield rose to 3.11%.
The Bloomberg Global Aggregate Treasury Total Return Index yield has climbed to its highest since 2000, and global bonds have lost 2.7% year-to-date. Drivers include escalating Middle East tensions pushing energy prices higher, persistently elevated inflation, global government debt surpassing $40 trillion for the first time, and expanding fiscal deficits. Gilles Moec, chief economist at AXA Group, said that “even if some key thresholds have been breached, long-end yields may not yet have reached a self-stabilizing level.”
Market Implications
- Bonds: Supply cuts from Korea and Japan may provide marginal relief at the long end, but the dominant driver remains US fiscal and inflation dynamics. Without a shift in US issuance or inflation expectations, Asian supply cuts are unlikely to reverse the global rout.
- Equities: Rising long-end yields pressure equity valuations, particularly long-duration growth and tech names. Banks may benefit from steeper curves, while rate-sensitive sectors such as real estate and utilities face headwinds.
- Crypto: Higher real yields raise the opportunity cost of holding non-yielding assets. Bitcoin and other crypto assets could remain under pressure if yields continue climbing, though safe-haven demand narratives may provide some offset.
- Commodities: Middle East tensions are supporting energy prices, which feed back into inflation and reinforce the bond selloff. Gold may find support as a hedge against fiscal and geopolitical risk.
- Currencies: The yen remains weak despite Takaichi’s comments, with intervention risk rising. The won may find some support from reduced issuance, but broad dollar strength remains the dominant force.
Key Takeaways for Investors
- Asian supply cuts are a symptom of a global bond market under stress, not a cure. Watch US Treasury issuance and inflation data for the real turning point.
- Long-end yields breaking multi-decade highs signal that markets are repricing fiscal risk. Duration exposure should be managed carefully.
- Currency intervention risk in Japan is elevated. Yen-denominated assets and carry trades warrant caution.
- Energy and gold remain the clearest hedges against the combination of geopolitical risk and fiscal expansion.




