币界网报道：Nvidia's stock surged over 20% this week, hitting record highs as investor enthusiasm for AI chips continues to build. The rally pushed Nvidia's market capitalization past $1 trillion, making it the fifth U.S. company to reach that milestone. The chipmaker's shares have more than doubled this year, fueled by soaring demand for its graphics processing units (GPUs) that power artificial intelligence applications. Technical analysts note the stock has formed a "golden cross" pattern, where the 50-day moving average crosses above the 200-day moving average - a bullish signal that often precedes further gains. Wall Street firms have been raising price targets, with some analysts predicting Nvidia could capture over 90% of the AI chip market. The company recently forecast quarterly revenue 50% above expectations, citing unprecedented demand for its AI processors. Nvidia's performance is being closely watched as a bellwether for the broader AI sector, with its chips becoming essential for training large language models like ChatGPT. While some investors express concerns about valuation, others argue the AI boom could represent a multi-year growth cycle for semiconductor companies. The stock's momentum comes amid heightened interest in AI technologies following breakthroughs in generative AI applications.