Zheshang Securities(SH:601878) ZHESHANG SECURITIES·2025-12-30 04:37Core Insights - The report discusses the phenomenon of shrinking volume in the stock market, particularly focusing on the Shanghai Composite Index, and its implications for market trends. It highlights that a short-term increase in the index often occurs after a period of shrinking volume, but the likelihood of continued growth diminishes over a longer timeframe [1][12][13]. Group 1: Market Behavior After Volume Shrinkage - The Shanghai Composite Index has shown a tendency to continue rising one week after a shrinking volume, with a probability of 43.5% for an increase of over 1% [12][13]. - In contrast, the likelihood of a decline increases over a month, with a 47.4% chance of a drop exceeding 1% [13]. - The report emphasizes that shrinking volume can indicate optimistic market sentiment, leading to fewer sell orders, which can support price increases in the short term [2][12]. Group 2: Conditions for Continued Market Upward Movement - External factors such as improved economic conditions, better-than-expected fundamentals, and expectations of loose monetary policy can support continued upward movement after a shrinking volume [3][18]. - A favorable micro liquidity environment and the influx of new capital, such as significant issuance of equity funds, can also sustain upward trends despite shrinking volume [20][28]. - Even in cases of weak economic fundamentals, unexpected macro policy actions can restore market confidence and allow for further upward movement [4][23]. Group 3: External Factors Leading to Market Adjustments - Increased pressure on economic fundamentals, tightening monetary policy, and significant fluctuations in global commodity markets can trigger market corrections following periods of shrinking volume [5][29]. - Unexpected external shocks, such as escalations in trade tensions, can also lead to market pullbacks after a period of rising prices on shrinking volume [5][37].