Normal trading resumed late Monday morning after the New York Stock Exchange said a technical issue had led to large fluctuations in the prices displayed for certain stocks, including Warren Buffett's Berkshire Hathaway. A little after 11 a.m. ET, the NYSE said the issue involved the market's main electronic stock price publisher, but that most stocks had since reopened or were in the process of reopening. “Shortly before noon, the issue was resolved and trading in the impacted stocks...