US stock futures dip as Trump rejects Iran peace proposal; Moderna and Micron stocks gain.

US stock futures fell following President Trump's rejection of Iran's response to a US-backed peace proposal, causing geopolitical concerns. Meanwhile, Moderna shares rose over 8% on positive Phase 3 flu vaccine data, and Micron Technologies gained 2.1% after strong weekly performance. The market is also watching Federal Reserve rate decisions, with a high probability of rates remaining steady in June. Investors are cautious amid mixed sector performances and ongoing inflation and geopolitical risks.