每日钉一下（大盘上涨了，为啥还有人亏钱？）

Group 1 - The article emphasizes that different regional stock markets do not move in unison, and understanding multiple markets can provide investors with more opportunities [2] - Global investment can significantly reduce volatility risk, suggesting that investors should consider diversifying their portfolios internationally [2] - A free course is offered to educate investors on how to invest in global stock markets through index funds, highlighting the potential long-term benefits of global market investments [2][3] Group 2 - Despite a generally bullish market in 2025, a significant proportion of retail investors are still experiencing losses, with over 40% reporting negative returns [4][5] - Historical data shows that during previous bull markets (2013-2017), many investors also faced substantial losses despite overall market gains, indicating a recurring trend [5][6] - The article points out that the primary reasons for investor losses include chasing trends and frequent trading, which often lead to poor decision-making during market fluctuations [9][10]