Gold just crashed after a record run, but big money is likely not backing down. Central banks and institutional investors are expected to boost gold exposure amid global uncertainty. Goldman Sachs cites speculative unwinds and spillover from the silver market for this week's price drop. Gold's rally hit a wall this week, with prices plunging after a record run — but institutional interest is likely to remain and support prices, according to Goldman Sachs. Prices of the yellow metal have been volati ...