The Motley Fool·2025-12-08 04:20Core Insights - The article emphasizes the importance of focusing on profitable leaders in the AI sector amid concerns of a potential bubble in AI stocks [1][10] - It highlights that while some AI stocks may be overvalued, established companies like Nvidia, Taiwan Semiconductor, and Alphabet are still generating significant earnings and should not be dismissed [7][10] Group 1: Profitability and Market Position - Investors should monitor the profitability of AI companies, as many currently lack profits, making it crucial to assess their path to profitability [4] - Nvidia holds an estimated 90% market share in data center GPUs, while Taiwan Semiconductor commands a similar share in advanced processors, indicating strong market dominance [6] - Alphabet is also a key player in AI, integrating AI into its services, which contributes to its profitability [6][7] Group 2: Market Dynamics and Future Outlook - Nvidia's third-quarter earnings increased by 60% to $1.30 per share, Taiwan Semiconductor's earnings rose by 39% to $2.92 per ADR, and Alphabet's earnings jumped by 35% to $2.87 per share [9] - The potential for a bubble may lead to a gradual deflation rather than a sudden collapse, with major players likely to experience less volatility compared to smaller, less profitable companies [11][12] - Diversification may be a prudent strategy for investors concerned about a bubble, as significant price declines could present buying opportunities for established companies like Nvidia, Taiwan Semiconductor, and Alphabet [15]