I spoke to someone at gkfx today and he said that if a share is revalued causing the price to gap down your bet is not revalued meaning you lose whatever you lose on the market price. This presents a huge danger surely? Has anyone had any experience of this? Is the guy right? I know it must happen fairly rarely that you would get caught out by something like this but it's worth thinking on. If you're long £10 a point and it gaps down a few hundred points you're in trouble to the tune of a couple of thousand.