Today's CNBC Daily Open newsletter highlighted the recent market movements of major indices, including the S&P 500, the Dow Jones Industrial Average, and the Nasdaq Composite, which saw a noteworthy gain. Amazon achieved a milestone by surpassing $2 trillion in market capitalization, thanks to the surge in megacap tech stocks driven by generative AI excitement. On the downside, Southwest Airlines cut its revenue forecast, facing challenges amid changing booking trends. Micron's shares slid after its revenue forecast missed analysts' expectations. Additionally, YouTube's dominance in media consumption was highlighted, with Alphabet's platform accounting for nearly 10% of all TV viewership in the U.S. Piper Sandler's chief market technician warned of a potential 10% S&P 500 correction this summer, citing red flags like poor market breadth and waning momentum. For more insights and updates, subscribe to CNBC Daily Open now.