Tesla stock jumps after the electric-vehicle maker posts better-than-expected earnings and profit margins, Boeing’s largest union rejects a new labor contract, UPS tops profit and revenue estimates, and IBM falls after posting a mixed earnings report.

The Q3 earnings season is now in full swing, and looking at the financial results so far, the news is pretty good. David Kostin, chief US

Spirit Airlines, Inc. SAVE saw a significant surge of 45.97% to close at $3.08. The stock hit an intraday high of $3.2 and a low of $2.53, with a 52-week range of $17.49 to $1.4. The airline is once again exploring a merger deal with Frontier Group Holdings Inc. amid potential bankruptcy filing talks.

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.

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.