Buy.
“Momentum stocks including Tesla Motors, Facebook, Google, Priceline Group and Amazon.com declined...”
Buy these?
Buy.
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Buy carefully, and those only stocks that are suitable to your investment objectives and tolerance for risk. And even then, only after extensive due diligence is performed. Never buy just because the market sold off.
Know what you are buying.
Traditional Americans got the message about how High Tech companies felt about us.... Why would you ‘buy’?