Appaloosa's billionaire boss reversed course in the second quarter by becoming a big-time buyer of Nvidia stock and a seller of the hottest AI-networking company. Last Thursday, Aug. 14, marked one of the most important days of the third quarter for investors. Though earnings reports and economic data releases are a near-everyday occurrence, the quarterly filing of Form 13Fs with the Securities and Exchange Commission (SEC) can be invaluable to investors. No later than 45 calendar days following the end to ...