Indexing investment is a kind of securities investment that attempts to completely copy a certain securities price index or build a portfolio according to the principle of compiling securities price index.
Index P/E ratio refers to the average P/E ratio of the index. P/E ratio refers to the ratio of current stock price to net profit per share, that is, PE=P/EPS. Among them: price-earnings ratio; P- current market price per share; Net profit per share.