What started as a strong open led to weakness throughout the day, with the $DJI and RUT losing steam. Microsoft (MSFT) closed flat despite its SharePoint service getting targeted by hackers over the weekend. CoreWeave (CRWV) gained on the session after offering $1.5 billion in senior notes to cover debt. Block (XYZ) rallied after the SPX tapped the company to join the index starting this Wednesday. Marley Kayden takes investors through the biggest stories starting the trading week.