Goldman Sachs made a staggering $200 million in one day as markets plunged

Boom times have returned on Wall Street, at least for one trading desk. Goldman Sachs made $200 million in profit on a single day this February as calm in stock markets was shattered with a historic surge in volatility, according to people with knowledge of the move. The investment bank had positioned itself to benefit if the Cboe Volatility Index , the product sometimes called the "fear index" because it reflects expectations of future volatility, climbed, said the people, who declined to be identified speaking about internal matters.