![Apple, Microsoft, Amazon, Google And Facebook Make Up A Record Chunk Of The S&P 500. Here's Why That Might Be Dangerous Apple, Microsoft, Amazon, Google And Facebook Make Up A Record Chunk Of The S&P 500. Here's Why That Might Be Dangerous](https://thumbor.forbes.com/thumbor/fit-in/1200x0/filters%3Aformat%28jpg%29/https%3A%2F%2Fspecials-images.forbesimg.com%2Fimageserve%2F5f1b235cb2b01c84351bc561%2F0x0.jpg)
Apple, Microsoft, Amazon, Google And Facebook Make Up A Record Chunk Of The S&P 500. Here's Why That Might Be Dangerous
![5 companies now make up 20% of the S&P 500. Here's why Goldman Sachs says that's a bad signal for future market returns. (MSFT, AAPL, AMZN, GOOGL, FB) | Markets Insider 5 companies now make up 20% of the S&P 500. Here's why Goldman Sachs says that's a bad signal for future market returns. (MSFT, AAPL, AMZN, GOOGL, FB) | Markets Insider](https://static2.businessinsider.com/image/5ea6d29138bf2305316562d3-462/market-concentration-goldman.png)
5 companies now make up 20% of the S&P 500. Here's why Goldman Sachs says that's a bad signal for future market returns. (MSFT, AAPL, AMZN, GOOGL, FB) | Markets Insider
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