The global bond market is standing at a highly symbolic threshold, with the benchmark 10-year US Treasury yield touching 4.96% on Friday, its highest level since 2023 and just a stone's throw away from the psychologically significant 5% mark. Since the start of the week, this yield has climbed a cumulative 18 basis points. The policy-sensitive 2-year Treasury yield briefly rose to 4.59%, while the 30-year yield hit its highest level since 2007. A selloff ignited by surging oil prices, stubborn inflation, and rate hike expectations is pushing the $32 trillion US Treasury market into the eye of the storm. At 8:30 PM Beijing time tonight, the US August Consumer Price Index (CPI) is set to be released, and this data will determine whether the 10-year yield breaks through what CFRA Research Chief Investment Strategist Sam Stovall calls an "emotional threshold."

Global Bond Market in Sync: Yields 'Break Out' from Sydney to Tokyo

This selloff is not isolated to the United States. As escalating Middle East tensions push oil prices higher and stoke inflation concerns, bond markets worldwide are under simultaneous pressure. Australia's 3-year government bond yield surged 18 basis points on Friday to 5.03%, its highest since May 2011, while the 10-year yield rose 13 basis points to 5.38%. Japanese government bond yields are approaching the critical 3% psychological level, and global yield indicators have reached their highest point since 2007. Michael Tang, rates strategist at Commonwealth Bank of Australia in Sydney, noted, "At this point, a lower US CPI and a Fed rate hike are the only two factors that could potentially trigger circuit breakers; otherwise, I don't think anyone would be willing to hold rate positions for the long term. Market hawkish sentiment is extremely high right now."

Triple Pressure Stacked: Oil, PPI, and Fiscal 'Trio'

This round of Treasury selloff is driven by three nearly simultaneous shocks. The first is oil prices returning above $100 per barrel. With the Middle East situation deteriorating, Houthi rebels seized a key Yemeni port, and Saudi Arabia's crude production plummeted to 6.2 million barrels per day in August, a 23% drop from July. Brent crude surged 6.3% on Thursday to $107.63 per barrel, later rising to $109 in after-hours trading. Oil prices have been climbing steadily since the August CPI data collection period, meaning energy inflation pressures are not yet fully reflected in the current figures.

The second shock is a hotter-than-expected Producer Price Index (PPI). Thursday's data showed the August PPI rose 5.4% year-over-year, exceeding the expected 5.3% and up from July's 4.7%. The July figure was revised upward, with core PPI rising 0.2% month-over-month and headline PPI up 0.4%, both in line with expectations. Wholesale price increases often signal that consumer prices will also move higher.

The third pressure point is fiscal stimulus promises "adding fuel to the fire." At a Republican midterm campaign event in Dallas, Trump pledged to send $5,000 checks to all American adults if the party retains control of both houses of Congress. According to estimates from multiple media outlets, the program's total cost would be approximately $1.2 trillion to $1.3 trillion, far exceeding the roughly $190 billion in annual revenue generated by tariffs. More damaging, the Treasury's expanded buyback operation on Thursday actually purchased just $5.2 billion, below the $6 billion cap, raising serious doubts about the market's confidence in Bessent's ability to stabilize long-end yields.

Treasury Buyback 'Debut' Falls Short, Bessent Faces Severe Test

With the bond market under sustained pressure, US Treasury Secretary Scott Bessent is facing increasingly tough challenges. On Thursday, in the first expansion of its buyback program, the Treasury purchased fewer bonds than the market expected. This outcome has left investors questioning whether the Treasury can effectively curb the rise in long-end yields. Last month, Bessent unexpectedly announced plans to at least double the size of long-term Treasury buybacks to $4 billion per operation, aiming to suppress long-term interest rates through direct purchases. However, Thursday's first expanded operation only bought $5.2 billion, below the $6 billion cap, serving as a catalyst for the latest round of selling. A break above 5% on the 10-year yield would place enormous political pressure on Bessent, who has been trying to prevent a bond market selloff ahead of the midterm elections. Yield fluctuations affect virtually all funding costs, including US mortgage rates, which have already reached their highest levels in over a year. For American voters heading into the midterms, mortgage rates are a politically significant indicator.

The 'Critical Point' at 5%: A Warning Line for Financial Market Turmoil?

For the $32 trillion US Treasury market, a 10-year yield breaking above 5% would constitute a systemic shock. This benchmark rate directly influences nearly all borrowing costs, including mortgages, student loans, and corporate bonds. Freddie Mac data shows the average 30-year fixed mortgage rate has risen to 6.76% this week. Padhraic Garvey, head of Americas research at ING, stated, "A 10-year Treasury yield reaching 5% looks more like an inevitability than a forecast. This is a worrying period for the bond market." John Higgins, chief economic adviser at Capital Economics, noted that the 5% yield level is "seen by some as a critical point where financial markets could break down." He added, "While we don't believe 5% is that 'magic' number, higher Treasury yields undoubtedly pose risks to the sustainability of US public finances and threaten the stock market."

For the $32 trillion US Treasury market, a break above 5% on the 10-year yield could trigger multiple ripple effects: equity valuations coming under pressure, rising corporate financing costs, further cooling in the housing market, and a reshaping of global capital flows. A clear signal has been sent: under the triple pressures of oil returning to $100, fiscal stimulus expansion, and the Fed's credibility being tested, the "anchor of pricing" for global capital markets is undergoing a historic recalibration. Stovall warned, "5% is an emotional threshold. Once crossed, investors become increasingly concerned. This could lead to further market weakness."

CPI as the 'Ultimate Verdict': Fed Rate Hike Probability Nears 70% for September

At 8:30 PM Beijing time Friday, the US August Consumer Price Index (CPI) is due for release. This is widely viewed by the market as one of the most critical inflation data points in recent years—it will directly determine whether the Fed initiates a rate hike at its September 16 meeting. Traders are currently pricing in approximately a 70% probability of a 25-basis-point rate hike in September. Surveys indicate economists expect the August core CPI, excluding food and energy prices, to rise about 0.2% month-over-month. Thursday's producer price index report showed energy prices again exerting upward pressure on inflation. Molly Brooks, US rates strategist at TD Securities, believes that higher-than-expected inflation data would boost expectations for a September hike and further monetary tightening. Garvey remarked bluntly, "A 10-year Treasury yield reaching 5% looks more like an inevitability than a forecast. This is a worrying period for the bond market."

However, Fed Chair Warsh has clearly designated the PCE price index as the official benchmark for measuring inflation. Stephen Juneau, senior economist at Bank of America, estimates that combined with August PPI data, core PCE is expected to rise approximately 0.26% month-over-month, which would round up to 0.3%. "If our assessment is correct, this would give a green light for the Fed to raise rates next week," he said. Bank of America is one of the most hawkish Wall Street banks, predicting three consecutive rate hikes. Fed Governor Waller previously stated that if core CPI rises 0.2% month-over-month as expected, he would support holding rates steady. But investors are focusing more on Warsh's hawkish remarks at Jackson Hole—his concerns about inflation risks have led many to believe he has positioned himself in a place where he "must raise rates," even if the economy doesn't necessarily require it, as action may be needed to maintain the Fed's credibility. Ray Remy, vice chairman of Daiwa Capital Markets America, stated plainly, "The bond market has made it very clear that the Fed will raise rates. The bond market won't wait for tomorrow's CPI to make that determination."