花旗研究部策略师表示，由于预期美联储降息步伐缓慢，未来几个月长期美国国债需求可能持续偏弱。 该行指出："相对缓慢的货币政策宽松步伐，应会制约市场对长期美国国债的需求。"策略师补充称，美 联储面临的政治压力进一步强化了这一预期。 来源：环球市场播报 ...

Core Viewpoint - The article emphasizes the importance of dynamic rebalancing in asset allocation to maintain the intended risk and return profile of an investment portfolio amidst market fluctuations [1][2][3]. Group 1: Asset Allocation and Market Dynamics - Asset allocation involves distributing funds across various asset types, such as stocks and bonds, to achieve specific investment goals [1]. - Market volatility can lead to a drift in the initial asset allocation, affecting the risk profile and potentially leading to missed opportunities or increased risk exposure [2][3]. Group 2: Dynamic Rebalancing Strategy - Dynamic rebalancing is based on the principle of mean reversion, where asset prices tend to fluctuate around an average level over time [3]. - Without dynamic rebalancing, an investment portfolio may deviate significantly from its intended asset allocation, leading to unintended risk exposure [3][4]. Group 3: Harry Browne Permanent Portfolio - The Harry Browne Permanent Portfolio strategy allocates funds equally among four asset classes: stocks, long-term bonds, gold, and cash or short-term treasury bills, aiming for stable returns across different economic conditions [4]. - The initial allocation is 25% for each asset class, which is designed to perform well in varying economic environments [4]. Group 4: Performance Comparison - Data from 2014 to 2025 shows that portfolios with dynamic rebalancing have similar long-term annualized returns compared to those without rebalancing, but with significantly lower maximum drawdowns [7][8]. - The Sharpe ratio, which measures risk-adjusted returns, is higher for rebalanced portfolios, indicating better performance under similar risk conditions [8]. Group 5: Implementation of Dynamic Rebalancing - The article introduces a dynamic rebalancing signal system, which monitors key asset performance indicators and provides guidance on adjusting asset allocations [9][10]. - This system helps investors maintain discipline in their investment strategies, reducing emotional decision-making during market fluctuations [10][11].