股票基金投资，为什么要避免频繁交易呢？｜投资小知识

Group 1 - The article discusses the duration of stock market cycles, indicating that a complete bull and bear market typically spans 3 to 5 years [2] - It highlights specific years when significant market uptrends occurred, such as 2021, early 2018, 2015, 2010, and 2007, with varying degrees of market strength [2] - The article notes that only a minority of investors manage to earn profits from stock funds over a complete market cycle due to the long intervals between significant market movements [2] Group 2 - Frequent trading is mentioned as a factor that increases transaction costs for investors, which in turn reduces overall returns [2]