Stocks plunge after Facebook-led tech sell-off; Nasdaq sheds 4%: Feb 4
b'Wall Street\\u2019s key benchmarks faltered on Thursday, capping back-to-back sessions of gains on the heels of a slew of strong tech earnings, as sentiment waned following dismal results from Facebook that sent shares of the company spiraling along with other tech peers.\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'