The stock market is trading lower midday Monday, down from last week's new high. The S&P 500 slipped 0.36%, while the tech-heavy Nasdaq Composite traded slightly below flat, down 0.06%. The Dow Jones Industrial Average lost 0.

Key Takeaways Major U.S. indexes were lower at midday Monday as the market geared up for a key week of corporate earnings.Cigna shares slumped, while Humana shares rose following a report the two are once again in merger discussions.

Boeing and the leaders of its machinists union reach a new tentative agreement that could end a strike that has lasted longer than a month, while a report says activist Starboard Value has taken a sizeable stake in Kenvue.