For years, the Bank of Japan's yield curve control program kept the 10-year JGB yield target near zero, influencing Japanese government bonds. That has changed. The 10-year Japanese government bond (JGB) yield hit 2.901% last Thursday, levels not seen since 1996. The 20-year version reached 3.901% on the same day. Since the start of 2026 alone, the 10-year yield has jumped more than 70 basis points. (A basis point is one-hundredth of a percentage point.)
The main reason: the Bank of Japan is normalizing policy. It abandoned its yield curve control program in March 2024. That program had kept long-term rates artificially low.
Now the BOJ's policy rate sits at 1%. Compare that to the European Central Bank's 2.25%, and you can see why investors are starting to pay attention.
Senior fixed income strategist Masahiko Loo of State Street Investment Management said, "JGBs are increasingly moving from 'uninvestable' to 'investable' for global bond investors."
The higher yields have drawn a crowd. Foreign investors poured a record 9.3 trillion yen into longer-dated Japanese debt in 2025, according to Investment manager Lauren Hyslop of Mattioli Woods. She said in an email: "The 10-year at around 2.87% is approaching what most major houses consider fair value, broadly in line with Japan's growth and inflation outlook."
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But not everyone is rushing in. Japan's debt-to-GDP ratio is above 200%, compared to the European Union's 81.7%. John Sidawi of Federated Hermes, who manages global fixed-income portfolios, said via email that a "confluence of uncertainties" is still deterring demand, "namely, newly founded fiscal pressures and the general position that the Bank of Japan is still behind the curve [on raising rates]." He added that global yields have been pushed up by geopolitical tensions in the Middle East.
There is also a danger zone. Hyslop cautioned: "Life insurers become forced sellers if the 30-year breaches 4.5%, so that level is simultaneously an opportunity and a danger zone." She noted that GPIF, the world's largest pension fund with $1.8 trillion in assets, "remains the most consequential potential buyer and any reallocation into domestic bonds would be a powerful stabilizing force."
Meanwhile, Japanese investors are pulling money back home. Hyslop noted that in the first quarter of 2026, Japanese investors sold $29.6 billion of U.S. debt. She said: "Japan spent two decades as the silent subsidizer of cheap global borrowing. That era is over."
The big question is where yields go from here. Charles Gave, co-founder of research firm Gavekal, said in a research note that Japanese government bond yields are higher than where they should be: "The asset to buy in Japan is one that no one owns: Japanese bonds, especially Japanese long bonds. The Japanese bond market is probably the most attractive bond market in the world today." He added that "pretty soon, Japanese yields will start falling and the yen will start to go up," and that long-dated JGBs should "significantly outperform gold in yen terms for the foreseeable future."
Not everyone agrees. Global head of multi-asset at DWS, Henning Potstada, argued that other bond markets like European bonds are still more appealing because of a higher policy rate and stronger debt sustainability: "If you have European positions stay or even do more in Europe, because the debt sustainability issues, we think will hold on, and exactly for these investors, Europe offers stability."
One wild card is GPIF. Hyslop called it "the most consequential potential buyer" - any move by GPIF to buy more domestic bonds could be a powerful stabilizing force, though the Finance Minister said there are no immediate revisions to GPIF's medium-term objectives.
So what does this mean for you? If you hold global bonds or own funds that invest in them, Japan is no longer a backwater. Rising yields there could ripple into other markets, especially as Japanese investors sell foreign debt to bring money home.
That means less demand for U.S. Treasuries and European bonds, which could push those yields up too. For anyone with a diversified portfolio, it is worth keeping an eye on where the money flows next. The old rule that Japan's bond market is boring is over.
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