Here comes your next S&P 500 buying opportunity By: MarketWatch April 17, 2017 at 07:27 AM EDT If you’ve been sitting on the market sidelines, the next window may be about to open. But get ready, as it may scare you a little on the way down. Read More >> Related Stocks: Alibaba Group Holding Ltd CBOE Volatility Index Coca-Cola Company Comcast Corp Darling International Inc Dr. Pepper Snapple Group General Electric Kraft Heinz Company Moneygram Intl Netflix SPDR S&P 500 ETF Trust Sempra Energy T-Mobile US UTILITIES SEL