What's driving today's $180 rally in gold prices to $4257 -- the highest six weeks? Firstly, gold has been forming a base for the past five weeks, bouncing around near $4000. I've written about that before and speculated that Chinese official buying might be taking place near $4000. In a situation like that, it doesn't take much to swing momentum and with broader markets in a 'buy everything' mode since late last week, gold has been swept up in the enthusiasm. The rally is obviously stretched in the short term but we have seen what momentum and FOMO can do in the gold market.