For example, a 2004 study by Brad Barber and Terrance Odean of the University of California and Yi-Tsung Lee and Yiu-Jane Liu at National Chengchi University acquired trade-by-trade data on individual day traders on the Taiwan Stock Exchange. The study found that only the top 1% of day traders made a profit – after deducting trading costs – in two consecutive six-month periods, and the median profit was hardly worth the effort: only about US$4000.
研究报告好像也证实这一点。例如，加利福尼亚大学的巴伯和欧丁以及台湾国立政治大学的李怡宗和刘玉珍在2004年做的研究报告获得了台湾股票交易所中单个股民的交易数据。这一研究发现，在连续两个半年期间中，只有前1%的股民在扣减了交易成本后依然获利，而中等利润只有大概4000美元，还不及辛苦钱。