Japan's Repatriation Risk Rises as Yields Near Three-Decade Highs

Japan's government bond yields have risen to near three-decade highs, sparking debate over the growing risk of repatriation. Japanese investors have traditionally held a large portion of their assets overseas due to rock-bottom interest rates, but this calculus is shifting as JGB yields become more attractive.

Ales Koutny, head of international rates at Vanguard Asset Management Ltd.'s active funds, notes that if domestic yields continue to rise, Japan may gradually retain more capital at home. This could ripple through the yen and global bond markets, impacting Treasury markets, European bond markets, and broader global funding conditions.

The Japanese government's 10-year yield touched 3% last week for the first time since 1996, driven by concerns over inflation and fiscal spending as well as expectations that the Bank of Japan may need to raise rates more quickly. This milestone coincided with a 4% rally in the yen this month.

Speculation is growing that the Government Pension Investment Fund could eventually increase its allocation to domestic bonds. Japanese health minister Kenichiro Ueno, who oversees the GPIF, said on Tuesday that the pension fund is still considering whether a review of its asset allocation is needed.