Group 1 - The article discusses the contrasting views of two Nobel laureates, Robert Shiller and Eugene Fama, on market predictions and the concept of market efficiency, highlighting the difficulty of accurately predicting stock market movements [4][7] - The Hang Seng Technology Index has shown unpredictable trends, with significant changes in the top holdings of the Hang Seng Technology ETF from its inception in 2020 to 2025 [4][6] - The article emphasizes the challenges of forecasting in complex systems, comparing stock market predictions to weather forecasts and earthquake predictions, which are notoriously unreliable [9][11][12] Group 2 - The article critiques the notion of predictions in finance, suggesting that vague or overly broad predictions lack credibility, and emphasizes the importance of specific, quantifiable forecasts [16][17] - It presents the Efficient Market Hypothesis (EMH), which posits that stock prices follow a random walk, making them inherently unpredictable, and discusses the implications of this theory for market participants [19][21] - The article argues that while short-term stock price movements are difficult to predict, long-term trends may show a tendency to rise, suggesting a need for diversified investment strategies rather than reliance on precise predictions [31][33]

过去 50 年最伟大的金融创新。 文丨 曾梦龙 编辑丨钱杨 据《万亿指数》，截至 2020 年年底，美国公募市场指数基金的规模已经接近 16 万亿美元。除此之外，许多私募基金、大型养老金计划和主权财富基金采用的是也是指数 2017 年，在美国奥马哈举行的伯克希尔·哈撒韦股东大会上，巴菲特向 4 万参与者介绍了约翰·博格。巴菲特说他为美国投资者作的贡献，可能比全美 任何一个人都要多。 "博格，你能站起来吗？" 巴菲特朝人群喊了一声。 在热烈的掌声中，瘦削的博格站了起来，向人群挥了挥手，并向着巴菲特和芒格讲台的方向，躬身致意。 "我估计，博格已经帮助投资者省下了很多很多……随着时间推移，数字将变得更大，至少数千亿美元。周一是博格 88 岁的生日，我只想说，生日 快乐！谢谢你为美国投资者所做的一切。" 巴菲特说。 这一年，巴菲特刚获得一场 10 年赌局的胜利。11 年前，他提出：一只简简单单跟踪美股市场的基金，能够击败任何一位自信满满的对冲基金经理。 普罗蒂杰公司在一年后接受了挑战，赌注为 100 万美元。10 年后，普罗蒂杰挑选的 5 只 FOF （投资超过 100 只对冲基金）平均收益率只有 36%， 而追踪标 ...