Wall St. Drops Amid Worries Over North Korea Test, Rate Outlook.
By Caroline Valetkevitch | NEW YORK U.S. stocks dropped on Friday, giving the S&P 500 its worst day since June as investor nervousness increased following a nuclear test by North Korea and Federal Reserve officials’ comments lifted rate hike bets. The CBOE Volatility index .VIX closed at its highest level since late June, while…