This paper analyzes the phenomenon of stock price increases in AI-related companies due to the advancement of artificial intelligence (AI) technology, and presents a 'capability realization rate (CRR)' model that quantifies the gap between AI's potential and actual performance. Focusing on the generative AI boom period from 2023 to 2025, we analyze stock price premiums and dissonance patterns through sensitivity analysis by industry sector and case studies of OpenAI, Adobe, NVIDIA, Meta, Microsoft, and Goldman Sachs. The results of the analysis show that AI-based companies are overvalued for their future potential, while existing companies adopting AI tend to be revalued based on actual earnings. The CRR model can help identify the risk of mismatch between market prices and AI-based realized values, and the paper concludes with policy recommendations for enhancing transparency, alleviating speculative bubbles, and harmonizing AI innovation with sustainable market value.