The left shoulder took shape starting in mid-May, with the head forming in late June, and now the right shoulder has emerged. The head-and-shoulders pattern is widely considered bearish, as it suggests that buyers are gradually losing control of the market for a particular stock or ETF. But the inability to push higher on the right shoulder suggests that buyer demand is beginning to weaken. At the same time, investors are questioning whether demand for AI chips can continue growing fast enough to justify the massive capital spending plans and lofty expectations baked into many semiconductor stock prices. Click here for in-depth analysis of the latest stock market news and events moving stock pricesRead the latest financial and business news from Yahoo Finance