每日钉一下（指数公司和指数基金公司，为什么要拆分开？）

Group 1 - The article discusses the importance of diversifying investments across different asset classes, including both RMB and foreign currency assets, as well as stocks and bonds [2] - It highlights the role of US dollar bond funds as a significant component of investment diversification [2] - A free course is offered to provide systematic knowledge on investing in US dollar bond funds, along with supplementary materials like course notes and mind maps for efficient learning [2] Group 2 - The article explains the separation between index companies and index fund companies, noting that they are typically distinct entities [5] - Historically, there was a time when index companies and fund companies were the same, allowing fund companies to create their own indices and issue corresponding funds [6] - The separation is primarily driven by conflict of interest concerns, where a fund company might manipulate indices to benefit its own actively managed funds [8][9]