Concentration Risks in the Stock Market: Two ETFs to Hedge

The top 10 stocks in the S&P 500 now account for 40% of its market cap. This is not a new trend-it’s a quantum leap backward in terms of diversification. If the S&P were a dinner party, these ten stocks would be the ones hogging the main course, leaving the rest of the guests to nibble on appetizers. Goldman Sachs’ David Kostin, with the solemnity of a man who has seen too many spreadsheets, warns that this concentration could lead to “lower S&P 500 returns over the next decade.” (He also probably owns shares in the company that sells spreadsheets. Full disclosure: this is not a financial tip. It’s a story about a teapot.)







