These companies have more dominant roles in tech and are trading at a better value than AMD.The world's five-most-valuable companies by market capitalization each have prominent positions in technology, leading areas such as consumer products, cloud computing, chip design, and software. As a result, tech stocks are crucial growth drivers in the stock market. The tech-rich Nasdaq Composite index has risen 304% over the past decade, significantly outperforming the S&P 500's 181% rise. Consequently, it's not a ...