Core Viewpoint - The article emphasizes the importance of the OVS indicator in identifying leading stocks during accumulation phases, highlighting the characteristics of volume ratio, cumulative amount, and continuous price increases as key factors for early detection [1]. Group 1: Characteristics of Accumulation - The accumulation phase is marked by an initial spike in volume ratio, often exceeding any single volume bar from the past year, followed by a series of high volume bars and a breakout of the yearly price high [4]. - The OVS indicator's PV3 output rises sharply, indicating a significant volume ratio, while the OV3 output increases more gradually, reflecting the absolute amount of transactions [4]. - In the early stages, PV3 is typically greater than OV3, but as the accumulation progresses, OV3 may surpass PV3, indicating a shift in trading dynamics [4]. Group 2: Selection Criteria for Stocks - To identify accumulation stocks, PV3 must first exceed 40, followed by OV3 exceeding 30, with the condition that PV3 is greater than OV3 [5]. - The selection process yields only a handful of stocks daily, varying with market conditions, indicating a selective and potentially lucrative investment opportunity [5]. Group 3: Key Indicators - The three main characteristics of accumulation stocks include: 1) extremely high volume ratio, 2) extremely high trading amount, and 3) continuous price increases from the bottom, breaking through yearly highs [6].