In the second quarter, AI and other investments by four American technology giants exceeded cash generated from their core operations by nearly $100 billion, according to a report from Palo Alto, California. The gap highlights growing concerns about overinvestment and a divide between companies that can demonstrate how artificial intelligence contributes to earnings and those that cannot. Following the companies' reports, shares of Amazon and Microsoft shot up after they showed they could link their AI investments to earnings. Additionally, Amazon's CEO stated that its cloud arm could become a trillion-dollar business.