The United States' 10-year treasury yield breached 4.58% on Friday, marking a decisive break from previous levels as the Iran war continues to drive up costs across the economy. According to reports from Reuters, the yield had stood at 3.95% at the close on February 27, after having fallen sharply that day. The breakthrough came as traders began pricing in higher oil rates, disrupted supply chains, sticky inflation, and permanently elevated interest rates following the weekend missile activity. Through much of April, yields drifted sideways amid hopes of ceasefires and diplomatic progress, but when those hopes proved false, yields started edging higher. The latest surge is directly attributed to the ongoing Iranian conflict, which is shaking investor confidence, dimming rate-cut hopes and pushing borrowing costs higher across mortgages and consumer loans.
US stocks dropped as oil surged and Iran war fears sparked investor concern, pushing major indexes into correction amid rising yields and market volatility. As reported by Reuters, the S&P 500 index remained on average more than 17% above its year-low since the end of March, delivering a gain of more than 8% for the year, despite Friday's decline. However, Wall Street fell as 10-year Treasury yields rose to 4.58%, driven by inflation worries and Middle East tensions that pressured AI and chip stocks and raised Fed tightening odds. Investors are increasingly worried that high stock valuations have not yet priced in the risk of a sharp rise in inflation and an uptick in bond yields, creating a potential market revaluation scenario. Market professional Jack Ablin of Cresset Capital noted that even a short delay in the resumption of flows through the Strait of Hormuz could generate a new inflation regime that investors are not prepared for. The benchmark S&P 500 was trading at 21.3 times earnings estimates for the next 12 months as of Thursday, well above its long-term average forward P/E ratio of 16, though below the 23.5 level reached in October.
Despite the ongoing geopolitical tensions, emerging market investors swung sharply back into emerging market assets in April, with the Institute of International Finance reporting portfolio flows of $58.3 billion after a $66.2 billion outflow in March when the escalating Middle East conflict rattled markets. According to Reuters, emerging market debt drew $51.9 billion after a $682 billion outflow in March, while equity inflows recovered to $6.4 billion following a $65.5 billion exodus in March. The recovery was led by fixed income rather than equities, unlike March's selloff. Ex-China debt inflows reached almost $50 billion, up from $13.8 billion in March, while ex-China equity flows recovered to $5 billion after an almost $63 billion outflow. Year to date, China debt flows remain negative at -$16.7 billion, while debt flows to emerging markets outside China are strongly positive at almost $109 billion. The IIF noted that while the data shows investors were willing to return quickly to emerging markets, this does not amount to a full return to pre-crisis optimism that spurred record inflows at the start of the year.
India's rupee breached the 96-per-dollar mark for the first time ever on Friday, marking a significant escalation in the currency crisis. As reported by World Business Watch, the Indian unit has depreciated more than 6% this year, making it one of Asia's weakest major currencies. The rupee's weakness is not driven by a dollar surge, as the dollar index remains well below its 2022 peak near 114. India's vulnerability stems from its energy dependence, importing 88-90% of its crude oil requirements with oil accounting for roughly a quarter of India's import bill. The ongoing geopolitical tensions are adding additional pressure on emerging market currencies like the rupee. India is scrambling to salvage a sinking rupee as surging oil prices linked to the Middle East conflict threaten to disrupt the world's fastest-growing major economy. The currency has dropped more than 5% since the crisis erupted in February, extending losses from 2025 and making it Asia's worst-performing major currency in 2026 so far. It hit a record low of over 96 to the US dollar on Friday, prompting officials to signal that halting further depreciation is a key macroeconomic priority. India's central bank has already poured billions of dollars to stabilise the currency, curbed speculative trading and offered a special credit line to oil importers to ease dollar demand.
Inflation accelerated sharply in April, with the wholesale price index leaping to 8.30% (accelerating from 3.88% in March), while several categories remain in double digits. According to Business Standard, Brent crude, which averaged around $78 a barrel earlier this year, briefly crossed $120 amid supply disruption fears and continues trading well above $100. For India, every $10 increase in crude oil prices widens the current account deficit by 0.3-0.4 percentage points of GDP and raises inflationary pressures across sectors, with energy costs driving fertiliser costs and food prices. The latest surge in oil prices, driven by the Iran war, is compounding these existing inflationary pressures. Producer prices saw their largest gain in four years in April, as reported by Reuters, with the surge in crude oil prices propelling inflation fears. Market professional Peter Tuz of Chase Investment Counsel noted that "I do think there is a real fear that inflation is kind of embedded in the economy going forward" and will drive the market down if it continues.
India's 10-year government bond yield has climbed back above 7.3%, reflecting concerns over inflation, capital outflows, and higher government borrowing requirements. As reported by Business Standard, bond markets are beginning to sense economic tension, with foreign outflows above ₹2 trillion adding to market pressures. The warning lights are flashing simultaneously: US treasury yields above 4.58%, oil above $100, inflation above 6%, bond yields above 7%, foreign outflows above ₹2 trillion, and a rupee inching toward 100. According to Paul Karger, co-founder of TwinFocus, his clients ask daily about the market paradox where profits are rising while oil prices and inflation are surging for companies. Rising benchmark yields tend to put pressure on equity valuations, as companies and consumers will face higher borrowing costs, which can weigh on economic growth and corporate profits. The geopolitical crisis in the Persian Gulf and the inflation it may be causing has the potential for long-term damage, with the Iran crisis having the potential to reshape the trajectory of the markets for the rest of the year.
