Pimco: Rising Long-End Treasury Yields Driven by Fed Expectations, AI Impact Overestimated
Claire Weston
Pimco argues the recent 50-plus basis-point rise in long-end Treasury yields is driven by markets repricing a Fed rate-hike path — not AI financing demand, whose impact is significantly overestimated. Investors should separate cyclical moves from structural fears.
Why did long-end yields jump?
The benchmark 10-year Treasury yield has risen over 50 basis points from this year's low to 4.45%; the 30-year is up more than 30 basis points.
This means → bond prices have fallen meaningfully, and holders of long-duration debt are already sitting on real losses.
Pimco strategist Lotfi Karoui points to the core driver: the Iran war pushed inflation risks higher, forcing markets to reprice the Fed's rate path.
How far have Fed expectations flipped?
Traders shifted from pricing in rate cuts before the war to pricing in a greater-than-60% probability of a hike by December.
In plain terms = the market was betting on easing; now it is betting on tightening — a complete reversal.
This reflects how fast geopolitical conflict transmits into inflation expectations, far outpacing slow-moving variables like AI.
Isn't AI financing demand the real culprit?
Karoui acknowledges AI buildout creates real structural financing pressure, but says it is "slow-growing and not the factor driving the yield volatility investors are focused on."
Tech companies have already issued over $300 billion in bonds to U.S. investors; whether the market can keep absorbing that volume is debated.
Yet the Bloomberg U.S. investment-grade corporate bond index's duration — a measure of bond sensitivity to rate changes — remains well below its post-pandemic peak.
This means → the so-called "duration supply shock" — a flood of long-dated bonds overwhelming market capacity — has not actually arrived. AI's impact will unfold gradually over years.
Can Treasuries still act as portfolio insurance?
Karoui stresses that AI credit expansion, widening fiscal deficits, and persistent external imbalances do not mean Treasuries have lost their hedging function.
His core judgment: "Distinguish cyclical market behavior from long-term structural concerns" — cyclical factors still support bonds' hedging role.
In plain terms = bonds losing price in the short term does not mean they will fail to protect a portfolio in the next equity sell-off — the two dynamics run on different logic.
Content is for reference only, not financial advice.