On continuation of the same concept from my HSI thread, like the title of the message says ... It seems all of the US index futures make their big move in instants, then spend most of the rest of the time randomly moving. And the big moves aren't really easy to catch - they happen in a very small window of time. I rarely see smooth trending days. Looking for technical or behavioral reasons why the US markets function this way, while many others don't. Does it boil down to too many traders and system programs being involved with these markets?