SKN | BNP Paribas Asset Management Increases Long-Dated Japanese Government Bond Exposure

Key Points

• BNP Paribas Asset Management has increased its exposure to long-dated Japanese government bonds, favoring 20- and 30-year maturities as a steep yield curve creates opportunities for relative-value strategies.
• Improving demand at government bond auctions and renewed buying by Japanese insurers suggest that domestic participation in the superlong bond market may be recovering.
• The investment outlook remains sensitive to Japanese fiscal policy, the Bank of Japan’s rate decisions and the yen’s direction, all of which could influence long-term yields and the attractiveness of hedged returns.

BNP Paribas Builds Its Position at the Long End

BNP Paribas Asset Management has expanded its exposure to long-dated Japanese government bonds (JGBs), attracted by the steep yield curve and indications that domestic investors are returning to the market.

James McAlevey, the firm’s head of global aggregate and absolute return, said the allocation had increased from a “very small size” early in the year to a “moderate to medium size.” The strategy favors 20- and 30-year government bonds, which have recently outperformed other long-duration government bond markets.

The positioning reflects an opportunity to capture elevated yields while diversifying exposure across global fixed-income markets. In selected flexible strategies, the firm is also short two- and five-year JGBs against long positions in 20- and 30-year debt. This relative-value approach expresses a view that the yield curve could flatten, meaning the yield difference between shorter- and longer-dated bonds narrows.

For institutional portfolios, the strategy highlights how differences in yield-curve shape can create opportunities beyond simply forecasting the direction of interest rates.

Higher Yields Attract Renewed Investor Demand

Superlong Japanese government bond yields reached multidecade highs this year amid concerns about inflation, government spending and the Bank of Japan’s monetary policy trajectory. Those elevated yields have increasingly attracted buyers, with a recent 20-year government bond auction drawing record demand, according to the source.

McAlevey estimates that long-dated JGBs offer yields of approximately 6% to 6.5% when hedged into U.S. dollars. Such returns can be attractive to overseas investors, although the outcome depends on currency-hedging costs and the assumptions used to calculate the hedged yield.

Domestic investors had been relatively absent from the long end, partly because Japanese insurers were dealing with impairment issues associated with low-coupon bonds. Recent auction demand, however, suggests that domestic participation may be recovering.

Japan Securities Dealers Association data cited in the report show that Japanese insurers have been net buyers of superlong JGBs for four consecutive months. Several life insurers have also indicated plans to maintain or increase domestic bond purchases during the second half of the fiscal year.

If sustained, this demand could provide additional support for the long end of the market, although it does not eliminate the risk of further yield volatility.

Fiscal Policy and the Bank of Japan Remain Critical

McAlevey said a relatively constrained fiscal response from the Japanese government would strengthen his confidence in adding further JGB exposure. This reflects concern that more expansive fiscal spending could increase government borrowing requirements and put additional pressure on long-term yields.

Monetary policy is another key variable. McAlevey is monitoring whether the Bank of Japan can maintain what he views as an approximately quarterly pace of rate increases. He does not consider a rate hike at the next meeting essential, suggesting that a December move combined with continued relatively hawkish communication could be sufficient.

The yen also matters. McAlevey believes a stronger currency would help contain headline inflation and reduce pressure on the central bank, potentially supporting long-dated bonds. Earlier yen weakness had intensified pressure on both the bond market and monetary policymakers, but he sees that dynamic beginning to reverse.

Closing Insights

BNP Paribas Asset Management’s increased JGB exposure reflects a combination of elevated yields, a steep curve and early signs of returning domestic demand. The strategy offers potential diversification and relative-value opportunities, but its success depends on how fiscal policy, monetary tightening and currency movements evolve.

For investors and wealth managers, the relevant considerations extend beyond headline yields. Duration risk, currency-hedging costs, the sustainability of insurer demand and the possibility of further increases in long-term yields all affect the investment case. The central question is whether the current yield premium adequately compensates investors for the risks embedded in Japan’s long-dated government debt.

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