[Retail Investors Bought $27 Billion Worth of NVIDIA in the Past Year, Ranking First Among the 'Big 7 Tech Giants'] The Kobeissi Letter reported that over the past year, retail investors purchased more than $27 billion worth of NVIDIA (NVDA) stock, ranking it first among the 'Big 7 Tech Giants' (Mag 7). Since October 2025, these purchases have increased more than fourfold. Tesla (TSLA) ranked second, with retail investors buying over $15 billion worth of its stock in the past year. During the same period, retail investors purchased over $9 billion worth of Microsoft (MSFT) stock. On the other hand, retail investors sold $5 billion worth of Apple (AAPL) stock in the past year, making it the only company among the 'Big 7 Tech Giants' that retail investors have sold off.