Spirit Airlines (SAVE) extends its debt refinancing deadline with the US Bank National Association, sending the stock soaring by over 40% on Monday.

Eli Lilly (LLY) is suing medical spas and online vendors who claim their products contain the main ingredients of GLP-1 weight-loss drug Zepbound, according to Reuters.

Lastly, Bloomberg reports that health insurers Cigna (CI) and Humana (HUM) have resumed informal talks around a potential merger.

Madison Mills and Seana Smith report more on the latest developments for these top stocks.

To watch more expert insights and analysis on the latest market action, check out more Morning Brief here.

This post was written by Luke Carberry Mogan.