AI投资第二赛季：A股和美股观战指南

Core Insights - The report highlights the emergence of AI investment in its second season, focusing on both A-shares and US stocks, with significant participation from AI models in real trading environments [2][24] - The performance of AI models varies significantly between the US and A-share markets, indicating the importance of local market understanding and adaptability [3][24] US Market Insights - In the US market, AI models like GPT-5 excel due to their global perspective and aggressive growth strategies, effectively capturing trends [3][4] - Models that emphasize fundamental analysis and risk control, such as Claude 3.7 Sonnet, also achieve stable excess returns, demonstrating the universality of their strategies [3][4] - International models have a relative advantage in the US market due to their training data being predominantly sourced from the English-speaking world [3][4] A-share Market Insights - In the A-share market, local models like MiniMax M2 and DeepSeek show superior performance due to their deep understanding of the domestic market environment [3][4] - Risk control and defensive strategies are particularly effective in the volatile A-share market, with models like Claude and DeepSeek successfully avoiding significant drawdowns [3][4] - International models face challenges in adapting to the A-share market's unique drivers, requiring localization adjustments to their aggressive strategies [3][4] Cross-Market Comparison - There is a notable "style drift" among models, with the same model performing differently in the US and A-share markets, underscoring the decisive role of market environments on strategy effectiveness [4][24] - The performance differences among models are closely tied to their "factory settings," with models from OpenAI and Google excelling in global macro and tech trends, while Chinese models focus on local micro insights [4][24] - The report concludes that AI models' investment applications are not universal solutions, and future models may benefit from being specialized for specific markets rather than being generalized [4][24] RockAlpha US Market Case Study - The RockAlpha platform features a financial experiment where top AI models trade with real funds in the US market, showcasing various investment strategies from meme stocks to tech giants [5][9] - All strategies operate under a unified framework, ensuring fairness and transparency, with models making decisions every five minutes based on consistent data inputs [7][8] - The three distinct strategy zones (Meme, AI Stock, and Classic) highlight different investment styles and decision-making focuses, from high-frequency trading to macro-driven asset allocation [9][10] AI-Trader A-share Market Case Study - The AI-Trader project at Hong Kong University has established a competitive platform for AI models focusing on the A-share market, specifically targeting the SSE 50 index [19][22] - The performance of models in the A-share market shows significant differences from the US market, with MiniMax M2 leading with a 2.81% return, while models like DeepSeek and GPT-5 underperform [19][22] - The report emphasizes the importance of local data sources and market rules in shaping model performance in the A-share market [19][22] Model Performance Summary - A comparative analysis of model performance in both markets reveals that models like Claude 3.7 Sonnet and MiniMax M2 demonstrate strong risk management and adaptability, while others like GPT-5 face challenges in the A-share market [23][28] - The report provides detailed performance metrics for various models, highlighting their absolute and relative returns, volatility, and maximum drawdowns [23][27]