U.S. stock futures edged higher Monday after President Trump posted on Truth Social that military strikes on Iranian power plants would be postponed. The announcement triggered an immediate market reversal, with Brent crude prices dropping sharply from above $100 per barrel as investors breathed a sigh of relief. Oil markets had been volatile amid escalating Middle East tensions.

Before the weekend, investors had been bracing for worst-case scenarios as diplomatic efforts to contain regional fighting appeared to falter. The sudden shift in tone from the White House caught many traders off guard. Dennis Dick of Triple D Trading described the rapid market reaction, noting he reflexively canceled all standing orders before realizing the move stemmed from Trump's post.

Keith Lerner of Truist Advisory Services captured the market mood, saying "a little bit of light, or a little bit of good news, can go a long way." The episode highlighted how quickly sentiment can shift in today's markets, where geopolitical headlines can trigger dramatic price swings within seconds.