Waters Corp saw its stock surge by over 12% after reporting Q1 sales of $1.275 billion, indicating strong performance in the tech sector. Similarly, Rockwell Automation and Pinterest recorded increases of 10% and 11%, respectively, following their positive earnings reports. However, the market also faced significant declines, with Duolingo and PayPal Holdings down by more than 6% and 8%, respectively, amid an overall volatile trading environment.