According to APP, the escalating conflict in Iran has triggered strong market concerns about persistently rising inflation, completely overturning traders' previous optimistic expectations for the Federal Reserve's policy path. Volatility in US Treasury bonds has surged to recent highs, with the ICE Bank of America Volatility Index (MOVE Index), often referred to as the "fear gauge" of the US Treasury market, last reporting 95.30 , a 21.26% increase from the previous trading day, reaching its highest level since June of last year.

The sharp rise in oil prices has further amplified inflationary pressures, eroding the real return on US Treasuries and diminishing their appeal as a traditional safe-haven asset. The hardline stances of both President Trump and Iran have created uncertainty regarding the duration of the conflict. The yield on the 30-year US Treasury bond, highly sensitive to inflation and government spending, has risen to around 4.88% , a one-month high, as traders simultaneously reduced their bets on a Federal Reserve rate cut in 2026.

Jack McIntyre, portfolio manager at Brandywine Global Investment Management, recently stated, "As bond investors, we must start thinking from a stagflation perspective, which always brings enormous uncertainty. Therefore, from a volatility perspective, I need to be compensated." This statement accurately captures the current shift in market sentiment.

To provide a clear comparison of changes in key indicators, the following table presents the latest data and recent trends:

In-depth analysis shows that soaring oil prices have directly pushed up energy and transportation costs, and core inflation may stubbornly and slowly decline. The Federal Reserve's "data-dependent" strategy will be more inclined to maintain high interest rates to anchor expectations. As a long-term benchmark, the 30-year US Treasury yield is sensitive to both inflation and fiscal deficits; its rise reflects not only weakened demand for safe-haven assets but also investors' demand for higher risk premiums. Soaring volatility means increased bond price swings, requiring institutions to hedge through derivatives or shorten duration, potentially leading to a temporary increase in overall market liquidity pressure.

President Trump has recently emphasized that "the war will end soon, but not this week," while insisting on Iran's "unconditional surrender" to completely eliminate the nuclear threat. This stance, coupled with Iran's tough response, has prolonged the window of uncertainty, further supporting oil prices and inflation expectations. Rising long-term yields will be transmitted to mortgage and corporate financing costs, indirectly suppressing consumption and investment. If the risk of stagflation materializes, the Federal Reserve's cumulative rate cut space in 2026 may shrink from the multiple cuts previously implied by the market to one or two, or even fewer.

Editor's Summary : The oil price and inflation shocks triggered by the Iranian conflict have clearly reshaped the US Treasury pricing curve. The simultaneous increase in volatility and yields reflects a shift in market demand from risk aversion to risk compensation, suggesting a more cautious policy path for the Federal Reserve in 2026. Investors need to closely monitor energy prices, geopolitical developments, and core inflation data, dynamically adjusting duration and asset allocation to cope with a potential stagflation environment.
Frequently Asked Questions
Q1: What is the ICE Bank of America Volatility Index (MOVE Index)? Why is it called the "fear indicator" for US Treasury bonds?
This index tracks the implied volatility of U.S. Treasury options, measuring the expected fluctuations in yields across long and short-term markets in real time. A higher value indicates greater market anxiety about sharp bond price swings, and it's considered a "fear thermometer" for the U.S. Treasury market. The recent surge to 95.30 was primarily due to the Iranian conflict causing oil prices and inflation expectations to spiral out of control, prompting traders to urgently seek higher returns. The 21% single-day jump in the index directly reflects this panic.

Q2: How do rising oil prices damage the real returns of US Treasuries and weaken their safe-haven appeal?
Oil prices rising to $95 per barrel directly increased energy costs, which were then passed on to the CPI and PCE, eroding the real yield on government bonds after adjusting for inflation. Simultaneously, safe-haven funds flowed out of bonds and into commodities or cash, forcing 30-year yields to rise to attract buying. The result was a vicious cycle of falling bond prices and increased volatility, temporarily invalidating the traditional "fly to safety" logic.

Q3: How will Trump's hardline stance on Iran affect expectations of a Fed rate cut in 2026?
The protracted conflict stemming from differing stances has amplified uncertainty surrounding oil prices and inflation. To prevent a double-dip recession, the Federal Reserve is unlikely to ease monetary policy easily, and the market has already lowered its pricing for the cumulative number of rate cuts in 2026. The dot plot and implied paths in futures markets suggest that the previously anticipated window for multiple 25-basis-point rate cuts has narrowed, with traders shifting towards a more conservative consensus of "later and fewer rate cuts."

Q4: What implications does Jack McIntyre's stagflation theory have for bond investors?
He emphasized that in an environment of high inflation and slowing economic growth, higher volatility compensation must be demanded. This reminds investors that they can no longer rely on traditional duration strategies, but should instead shorten the duration of their investments, increase their allocation to floating-rate or high-yield instruments, and use options to hedge tail risk, so as to avoid suffering double losses of capital and returns in a stagflation trap.

Q5: What will be the long-term impact of this event on the global bond market and monetary policy?
Short-term volatility in US Treasury bonds spills over to other sovereign debt, increasing global borrowing costs. In the medium term, if conflicts ease and oil prices fall, inflationary pressures will lessen, and the Federal Reserve may still restart easing in 2026, but the pace will be more data-dependent. Investors need to prepare for a highly volatile and data-driven environment and diversify their portfolios across TIPS, inflation-linked bonds, or emerging market assets to capture opportunities arising from policy turning points.