Introduction
Benchmark Japanese government bond yields have pierced a psychological threshold last seen in the mid-1990s, prompting a reappraisal of where Japan’s vast savings are deployed. The 10-year Japanese government bond (JGB) yield reached 3% on Tuesday, the first time since 1996, and the shift is beginning to influence global capital allocations.
Flows and market reaction
Traders say part of the recent global bond sell-off has been driven by expectations that Japanese investors will reduce purchases of foreign sovereign debt as domestic yields rise. Official statistics show Japanese investors have sold a net 3 trillion yen in overseas debt through August 22, the largest year-to-date outflow since the turmoil in 2022. At the same time, Japan remains the largest holder of U.S. Treasuries and a major buyer of sovereign debt worldwide, with overseas holdings around $2.4 trillion.
Market participants in Sydney, London and Singapore report a noticeable change in Japanese behaviour. Bond dealers and asset managers say they are seeing less accumulation and more maintenance of existing positions from Japanese accounts. "They’ve got a home market bias for the first time in a lot of years," said Ryan Ellis, Citi’s head of markets sales for Australia and New Zealand, noting that Japanese investors have been "less on accumulation and more holding their exposures reasonably consistent" in recent months.
Investor anecdotes and repositioning
Portfolio managers on the ground provide a similar picture. "I know it first hand from talking to Japanese investors," said Michael Weidner, co-head of global fixed income at Lazard Asset Management. He described a long period of underinvestment in yen securities, followed now by a reallocation as domestic yields become more attractive.
Toshinobu Chiba, a Tokyo fund manager at Simplex Asset Management, said he had turned bearish on U.S. Treasuries and began buying 10-year JGBs just before the recent peak in JGB yields. "It’s easy to buy the 10-year at above 3%," Chiba said. He added that many long-duration, traditional domestic investors have strong incentives to increase allocations to yen assets at current yields, making a repatriation of capital a natural movement.
Institutional shifts and survey data
Wider institutional indications support these anecdotal reports. A survey of 82 corporate Japanese pension funds by J.P. Morgan Asset Management, released on Wednesday, showed the net share planning to boost domestic bond holdings was the highest since the survey began in 2008. The report also found these funds continued to reduce their holdings of overseas debt amid elevated currency hedging costs.
The prospect of a pivot by the Government Pension Investment Fund (GPIF) to domestic assets rattled global fixed income markets in July, though there is no indication that the $1.8 trillion fund has begun to alter its portfolio. Nevertheless, other institutional investors appear to be reassessing the case for greater exposure to domestic debt as yields climb.
Relative value and the narrowing yield gap
The attractiveness of JGBs has improved on a currency-hedged basis as yields rise. Masayuki Nakajima, senior strategist at Mizuho Bank in London, noted that as JGB yields increase, the relative appeal of domestic bonds strengthens, potentially prompting a shift away from overseas assets back into Japanese fixed income.
Over the past two years, the 10-year JGB yield has more than tripled. In the same interval, 10-year U.S. Treasury yields have risen roughly one percentage point, with the gap between the two now narrower by more than 100 basis points than it was previously. That lower spread reduces the relative value edge that international bonds offered Japanese investors, as Justin Onuekwusi, chief investment officer at St. James’s Place in London, observed: "The marginal buyer for Treasuries and international bonds is reducing." He emphasised that this shift in relative value matters to global demand.
Regional consequences
Australia’s liquidity has been particularly sensitive to changes in Japanese demand. In pre-pandemic years, Japanese investors were among the largest foreign holders of Australian debt. With the recent pullback, market participants say the Aussie market has faced pressure from local central bank rate hikes and the reduced appetite from Japanese accounts. The change is largely characterised as return-driven rather than purely tactical reallocations.
Policy and currency considerations
Questions remain about the foreign exchange impact of any shift in allocations because many overseas positions are hedged. Yields in Japan have been volatile, a factor that has moderated some buyers' enthusiasm for immediately increasing allocations. The path of the yen will likely depend in part on the Bank of Japan's actions. Kevin Thozet, a member of the investment committee at Carmignac, said turning the yen's fortunes would require the central bank to tighten policy "more rapidly than what markets expect." The BOJ is due to meet later this month.
JGB yields have also been lifted by policy and fiscal factors. Prime Minister Sanae Takaichi has advocated large fiscal spending, and Finance Minister Satsuki Katayama repeatedly declined to expand on the 3% threshold in public comments beyond reaffirming a commitment to appropriate debt management and saying government budget requests were at reasonable levels.
Longer-term implications
Any reorientation of investments accumulated over decades will be gradual rather than immediate. Yet even a steady reduction in the marginal demand from Japanese investors has ripple effects across global fixed income markets. "The story is not large-scale repatriation, but Japan gradually ceasing to be the marginal buyer of foreign bonds," said Masahiko Loo, senior fixed income strategist at State Street Investment Management in Tokyo. He added that less incremental demand from one of the world’s largest pools of savings is contributing to higher term premiums globally.
While there is no sign that Japan has begun to rapidly liquidate its roughly $2.4 trillion overseas bond holdings, the combination of higher JGB yields, shifting institutional preferences and persistent hedging costs is nudging at the long-standing pattern of capital flows into international sovereign debt.
Exchange rate note
For reference, $1 equals 160.2800 yen.