牛市里没到高估的品种，会有收益吗？｜投资小知识

Group 1 - The main sources of returns for index funds are profit growth, valuation improvement, and dividend income [2] - Profit growth from listed companies is the core source of long-term returns, while valuation impacts returns significantly during market cycles [2] - Dividend contributions are substantial for dividend and value indices, and patience in holding these investments is advised as long as they are not overvalued [2]