资产组合理论
Search documents
不提高风险的同时提升收益率,可以这么做
雪球· 2025-09-30 13:01
Core Viewpoint - The article emphasizes the importance of diversified investment strategies over concentrated holdings, illustrating how a diversified approach can yield better returns even in volatile markets [4][12][39]. Investment Strategies - A mathematical problem is presented to illustrate the risks of concentrated investment versus diversified investment, highlighting that a 50% chance of an 80% gain and a 50% chance of a 60% loss leads to a negative expected value when concentrated [4][5]. - The article introduces a "diversified investment method" where an initial capital of 100,000 is split across 10 stocks, resulting in a 10% weekly return, leading to a total of approximately 259,000 after 10 weeks, representing a 159% return [9][12]. - The article discusses the significance of maintaining a balanced portfolio, where the distribution of gains and losses should ideally approach a 50% win rate for optimal returns [21][24]. Risk Management - The article highlights that diversification should not only involve spreading investments across multiple stocks but also across different sectors to minimize correlation and enhance returns [23][26]. - It emphasizes the need for "portfolio rebalancing," where profits from winning stocks are partially sold to reinvest in underperforming stocks, thus maintaining a balanced risk profile [35][37]. Performance Comparison - The article contrasts the performance of diversified investment strategies with concentrated strategies, noting that while successful investors like Warren Buffett may thrive with concentrated holdings, the average investor may benefit more from diversification due to lower expected loss rates [39][45]. - It points out that the effectiveness of diversified strategies increases with the volatility of the stocks involved, suggesting that higher volatility can lead to greater returns when using a diversified approach [46].
中泰资管天团 | 程冰:低波“固收+”回撤目标的设定依据与干预机制
中泰证券资管· 2025-05-15 08:32
Core Viewpoint - The article emphasizes that "fixed income +" products do not necessarily have larger drawdowns compared to pure bond products, highlighting the importance of asset allocation and risk management in achieving long-term returns above average fixed income yields [2][3]. Group 1: Product Performance - The Zhongtai Shuangli Bond A share has achieved a net value growth rate of 9.97% since its establishment on September 27, 2022, outperforming the benchmark yield of 5.93% [3]. - The maximum drawdown for the A share of Zhongtai Shuangli Bond is 0.66%, which is significantly better than the maximum drawdowns of the mixed bond secondary index (4.25%), pure bond fund index (1.31%), and short-term bond fund index (0.89%) [3]. Group 2: Risk Management Strategy - The company employs a dynamic management approach for drawdown control, where the underlying fixed income provides a safety cushion, and risk exposure is adjusted based on risk budget assessments [5]. - The strategy includes preemptive interventions, allowing for some tolerance during initial drawdowns, but increasing the weight of risk evaluation once thresholds are triggered [5]. Group 3: Investment Philosophy - The investment strategy focuses on increasing positions only when market conditions are favorable and maintaining low positions when opportunities are unclear, often keeping high elastic positions at very low levels (0% or 1%) [5][6]. - The company prioritizes protecting clients' risk-return objectives, emphasizing a disciplined approach to investment that considers potential losses before gains [6]. Group 4: New Product Offering - The Zhongtai Shuangxin Six-Month Holding Bond is currently being issued, designed with a six-month holding period to reduce daily redemption impacts and stabilize fund size, allowing for a more focused execution of medium to long-term investment strategies [6].