底部企稳和底部反转：主题形态学三板斧（三）

Group 1: Theme Opportunity Identification - The report focuses on identifying theme investment opportunities through comprehensive screening of theme indices, allowing investment managers to concentrate on logical analysis and decision-making[2] - It aims to create investable theme indices by mapping stocks and convertible bonds, providing sector classification and institutional holdings as auxiliary indicators[2] - The report emphasizes the importance of recognizing "bottom stabilization" and "bottom reversal" opportunities, which are distinct from right-side strategies[6] Group 2: Bottom Stabilization and Reversal Signals - Bottom stabilization is characterized by a price low, a "golden needle" pattern, and a breakout confirmation, requiring subsequent price confirmation for validity[15] - Bottom reversal signals are defined by a price low, significant volume increase, and a breakout above moving averages, attracting market attention and additional capital[15] - Historical data shows that bottom stabilization patterns yield significant excess returns, particularly in volatile and declining markets, with a notable win rate in 2021 and 2022[23] Group 3: Institutional Participation and Fund Holdings - As of Q3 2025, indices with a fund holding ratio of 2-5% account for the highest proportion at 43.4%, with technology theme indices like optical modules having a fund holding ratio of 20.4%[25] - The report highlights the need to assess institutional participation in theme markets through fund holding data, indicating a strong interest in specific sectors[25] Group 4: Investment Implementation and Risk Factors - The report outlines the investment implementation process for theme opportunities, focusing on recent leading stocks and convertible bonds within the theme indices[31] - It includes risk warnings such as historical performance not guaranteeing future results, industry uncertainties, and potential geopolitical risks affecting market stability[37]