巴菲特的资产配置智慧：股债配置的三大经典策略

Core Viewpoint - The article discusses three classic asset allocation strategies between stocks and bonds, emphasizing their historical significance and application in investment practices. Group 1: Asset Allocation Strategies - The first strategy is the "Valuation Allocation Strategy," used by Graham and Buffett, where cash and bonds are favored when the stock market is overvalued, allowing for opportunistic buying during market downturns [9][10][12]. - Buffett's cash holdings reached $140-150 billion in 2021 during a high valuation period, which decreased to around $100 billion in 2022 as he made investments during a market decline, and by 2023-2024, his cash and short-term treasury holdings grew to a record high of $334.2 billion [14]. - The second strategy is the "Target Risk Strategy," which maintains a fixed ratio of stocks to bonds, such as 50:50 or 40:60, and involves rebalancing when the allocation deviates significantly from the target [20][22]. - The third strategy is the "Target Lifecycle Strategy," introduced by Fidelity in the 1990s, which allocates assets based on age, typically following the formula "100 - age" for stock allocation, ensuring a minimum of 30% in stocks even in older age [32][34][36]. Group 2: Performance Metrics - The article presents a backtest of different stock-bond ratios, showing that higher stock allocations lead to higher annualized returns but also increase volatility and maximum drawdown [30]. - For example, a 90:10 stock-bond ratio had a maximum drawdown of -42.49% with an annualized return of 9.7%, while a 10:90 ratio had a maximum drawdown of -4.81% with a return of 5.2% [30]. Group 3: Importance of Rebalancing - The article emphasizes that asset allocation and rebalancing are crucial for optimizing investment returns, with rebalancing being referred to as a "free lunch" in investment [41][44].