AI Sentiment Triggers Safe-Haven Demand, Japanese Government Bond Yields Fall Across the Board
nashnova research
An AI-stock sell-off drove safe-haven buying into Japanese government bonds Friday, pushing the benchmark 10-year yield down as much as 9 basis points to 2.79% — even as domestic inflation data came in hot, the bond market chose to hedge first and read the data later.
How far did Japanese bond yields fall?
The benchmark 10-year yield dropped as much as 9 basis points to 2.79%; the 20-year fell 5.5 basis points.
This means → money is flowing out of equities and into bonds; the rally spanning both the long and ultra-long end shows broad-based demand, not a localized move.
The trigger was a concentrated sell-off in AI-related stocks — once risk sentiment soured, investors turned to government bonds as a safe haven.
Why are strategists saying "bonds are acting like bonds again"?
Masahiko Loo, senior fixed-income strategist at State Street Investment Management in Tokyo, put it plainly: "Bonds are doing what bonds are supposed to do."
In plain terms = for a stretch, stocks and bonds often moved in the same direction, undermining the textbook case for holding bonds as a diversifier. This time, bonds rallied while AI stocks sold off — the diversification benefit is back.
He added that investors holding duration assets — longer-dated bonds — are finally earning a positive carry while they wait, collecting both coupon income and price appreciation.
Inflation came in strong — why did bonds rally anyway?
Data released the same day showed Japan's core inflation rising above the Bank of Japan's 2% target for the first time this year, which would normally reinforce expectations for a December rate hike.
This means → under textbook logic, higher inflation = stronger hike expectations = bonds should fall. Instead, the market looked straight past the inflation print.
Loo noted that inflation data has taken a back seat; the market's focus has shifted to growth risks and uncertainty around AI.
In plain terms = investors now fear an economic slowdown more than rising prices — the hierarchy of fears has flipped, and that is why bonds rallied against the grain of the inflation data.
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