Group 1 - The core concept of fund advisory is to address the issue where funds make profits, but investors do not [4] - Fund advisory services aim to help investors achieve better returns through professional guidance [5] - The article highlights the importance of diversification in investment to effectively reduce volatility risk [10] Group 2 - Research by overseas investment expert Burton Malkiel indicates that the number of stocks held is related to the volatility risk [12] - Investing in only two stocks can lead to a volatility risk that is 2-3 times higher than the overall market risk [13] - Increasing the number of stocks to 20 reduces the risk to about one-third to two-thirds higher than the market risk [14] - Holding 50 stocks aligns the risk with the overall market risk, as seen in major indices like the SSE 50 and STAR Market 50 [15] - Beyond 50 stocks, the reduction in risk becomes marginal, with indices like CSI 300 and CSI 500 reflecting the market's inherent risk [16] - It is recommended to diversify across different industries to enhance risk reduction [16][17] Group 3 - For actively managed funds, the number of heavily weighted stocks typically ranges from 10 to 20, resulting in a risk that is one-third to two-thirds higher than the market [19] - However, investing in a diversified basket of funds can lead to a lower volatility risk compared to the market, with underlying stocks numbering around 100 [19]

Group 1 - The article discusses the importance of considering both returns and risks when making investment decisions, highlighting that focusing solely on returns can be dangerous [4][6] - It introduces the Sharpe Ratio as a key metric that helps investors evaluate the "cost-effectiveness" of their investments by considering both returns and risks [8][9] - The Sharpe Ratio is defined as the ratio of excess return (returns above the risk-free rate) to the volatility of the investment, where the risk-free rate is typically represented by short-term government bond yields [13][15][19] Group 2 - An example is provided comparing two funds: Fund A with a 15% return and Fund B with a 20% return, emphasizing that Fund A may be a better choice due to its lower volatility risk [21][23] - The article notes that investors do not need to calculate the Sharpe Ratio themselves, as it is usually provided in the product descriptions of both public and private funds [24] - It outlines that a Sharpe Ratio below 0 indicates that the investment is underperforming compared to risk-free assets, suggesting that such investments should be avoided [25] Group 3 - The article warns against comparing Sharpe Ratios across different strategies, as they have inherently different risk-return characteristics [27] - It emphasizes the importance of using a longer time frame (3-5 years) for evaluating the reliability of the Sharpe Ratio, as shorter periods may not capture complete market cycles [29] - The article concludes that while the Sharpe Ratio is a valuable tool, it should not be the sole metric for investment decisions; other dimensions should also be considered [31][32]