I've saved a 40percent of my salary since I was 27. Most of the money, I've bought america stock and ETF. Among my stocks, QQQ ETF is my best Stock. QQQ invests main technology company in America. There are Apple, Google, Tesla, etc 100 major company. These days, There are so many A.I company in the world, Palantir is so hot in the stock market. But i invested in Palantir in 2023. I believe that Palantir will be high value stock. High risk Investing is so dangerous, So invester have to study to stock market and company.