Stocks slide, yields elevated as Mideast conflict fears grow

On August 18th, U.S. government bond yields fell slightly, although longer-dated yields remained near multi-year highs following a 30-year Treasury yield that hit a level not seen since 2007. This decline was driven by growing concerns over an escalating Middle East conflict, which heightened inflation worries and undermined stock prices.

Oil prices were up for three consecutive days, with Brent crude hitting a high since late last month, while U.S. crude rose 0.3% to $84.75 a barrel and Brent fell 0.09% to $90.79 per barrel. Despite recent soft U.S. economic data easing concerns about an imminent Federal Reserve rate hike, traders now see only a 31% chance of a hike at the Fed's September meeting, but a 68% probability of an increase by December.

A potential increase in inflation could reignite expectations for faster rate hikes. George Bory, chief investment strategist for fixed income at Allspring Global Investments, noted that if tensions continue to escalate, a mid-cycle adjustment would be necessary. The 30-year Treasury bond yield dropped 1.57 basis points to 5.2943%, while the 10-year note yield fell 1.2 basis points to 4.712%.

These yield increases came as Japanese government bond yields climbed to 30-year highs, raising concerns that Japanese investors might shift capital out of U.S. debt into Japanese bonds, adding further upward pressure on Treasury yields. Major U.S. stock indexes fell to roughly two-week lows on Tuesday, with technology stocks particularly affected by rising Treasury yields.

Elevated yields are perceived as unfavorable for equities, as they make stocks less attractive and increase borrowing costs for capital-intensive companies investing in AI infrastructure. The CBOE Volatility Index, a measure of market fear, hit its highest level in over a week. Investors are now focusing on the Federal Reserve's latest policy meeting minutes and the upcoming Jackson Hole symposium, which are expected to provide crucial insights into policymakers' interpretations of recent economic data.