Four things to know ahead of the U.S. stock-market open on Monday - MarketWatch
1. Iran hasn't retaliated post-U.S. military actions, affecting geopolitical tensions. 2. S&P 500 futures rose slightly as oil prices fluctuated. 3. Tesla launched a new robotaxi service, entering a competitive sector. 4. Northern Trust shares rise amid speculation of a potential merger. 5. Flash PMI and existing home sales data set to be released today.