The S&P 500 notched a new record high this week but mid-week setbacks led to the index's first weekly loss in almost a month. The index ultimately posted a loss of 0.3% for the week. Here is a snapshot of the index from the past week: S&P 500: A Perspective on Volatility For a sense of the correlation between the closing price and intraday volatility, the chart below overlays the S&P 500 since 2007 with the intraday price range. On April 9th, the index experienced its largest intraday price volatility (10. ...

The late, great rocker Tom Petty said it best: “you take it on faith, you take it to the heart, the waiting is the hardest part.” What are many investors waiting for these days? An opportunity to buy not just a dip, but a BIG dip. A dip that is more than just another knee-jerk reaction. More News from Barchart It hasn’t happened yet, and it might not happen anytime soon. But like the laws of gravity, the market is ultimately cyclical. And that means that all good bubbles must pop. Investors are looking ...

文章核心观点 - 市场指数多样，不同加权方式对指数表现影响不同，等权重在标普 500 指数有效，但在纳斯达克 100 指数效果不佳 [1][5][14] 指数介绍 - 道琼斯工业平均指数按股价加权，不能有效衡量市场整体表现和经济健康状况 [2] - 标普 500 指数按市值加权，旨在更代表美国经济，大公司对表现影响大 [3] - 纳斯达克 100 指数是纳斯达克综合指数中 100 家最大公司，按市值加权，仅以市值为选择标准 [7] 指数加权方式变化 - 景顺标普 500 等权重 ETF 将标普 500 指数从市值加权变为等权重，使每家公司对表现影响相同 [4] - Direxion 纳斯达克 100 等权重指数股票 ETF 对纳斯达克 100 指数采用等权重方法 [8] 不同加权方式表现对比 - 长期来看，景顺标普 500 等权重 ETF 表现优于常规标普 500 指数 [5] - Direxion 纳斯达克 100 等权重指数股票 ETF 表现落后于市值加权的纳斯达克 100 指数，且价格回撤程度相同 [8][10] 等权重方式效果分析 - 标普 500 指数采用等权重可让不受青睐的小公司与大公司对表现有相同影响 [13] - 纳斯达克 100 指数本身是最大且可能表现最好的公司，等权重逻辑不适用 [13] 投资建议 - 若投资纳斯达克 100 指数，选择景顺纳斯达克 100 ETF 等，应保持简单，避免复杂操作 [14]