Petco, Spirit AeroSystems fall; Nvidia, Guess rise, Thursday, 8/24/2023

NEW YORK — Stocks that are trading heavily or have substantial price changes Thursday: Nvidia Corp. (NVDA), up $8.71 to $479.87. The chipmaker reported strong second-quarter financial results and gave investors an encouraging revenue forecast. Autodesk Inc. (ADSK), up $6.70…