US stock markets face pressure as the 10-year Treasury yield reaches 5 percent, a level that forces listed companies to compete with low-risk government bond returns. Ed Yardeni of Yardeni Research has lowered his year-end S&P 500 target from 8,400 to 7,900, citing bond market volatility, geopolitical tensions in Iran, and upcoming midterm elections.

Geopolitical risks have intensified following a Houthi missile strike on Riyadh. Brent crude prices closed at $104 per barrel, marking a 13 percent increase over the past month. This rise in energy costs impacts airlines and retailers while complicating the Federal Reserve's monetary policy, as officials weigh the necessity of further rate hikes against persistent inflation.

Economic data scheduled for Wednesday, including the S&P Global flash survey, will provide insight into whether energy costs are slowing economic growth. Meanwhile, market participants are focused on Thursday's meeting between President Donald Trump and President Xi Jinping, where discussions will cover trade tariffs, rare earths, and artificial intelligence regulations.

Corporate earnings reports are also in focus this week. KB Home is set to report on Tuesday, with mortgage rates closely tied to the 10-year Treasury yield. Costco will release its results on Thursday, amid analyst warnings that core earnings may fall short of expectations. Traders are currently increasing bets on a potential Federal Reserve rate hike in October.