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 promotes a free course on fund advisory, providing additional resources like course notes and mind maps for efficient learning [5][7] Group 2 - The concentration of holdings in a fund refers to the proportion of the top 10 holdings relative to the fund's net asset value [10] - A concentrated portfolio can lead to higher volatility, while a diversified portfolio tends to have lower volatility, aligning more closely with market fluctuations [11] - Research by investment expert Burton Malkiel indicates that the number of stocks in a portfolio inversely correlates with risk, with 50 stocks generally aligning risk with the overall market [12][15]