ii. When you put a stop loss on, the rules say they may not be able to close your position at that price. Has anyone been caught by this. I mean supposing you put a E5 spread on US/Euro exchange rate they can move very quickly - every .0001 per dollar move, thats .01 of a cent, is 5 euro gain or loss. Can it happen that a lot of movement occurs before they can close out the position and why does this happen. I presume its where there is a sudden drop and you cant find a buyer on the other end (in the paralllel options market) to buy till you hit a very low price.
iv. Does the price movement for shares quote on spreadbetting indices following the share price faithfully or is it a market unto itself ie. you could have a movement in share price but no movement in the index. Also if a good dividend is declared does this move the index price up.