S&P 500 notches fourth day of gains as investors await key earnings
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Stock market live updates: Dow down 130 after sudden midday drop, gold 7-year high, E-Trade surges
S&P 500 Forecast: Setting Its Sights On New Highs | Investing.com
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