So say you place a sell order for 100 shares but then the share price falls suddenly by quite a bit. Could you be left trying to sell 100 shares that no one will buy?
And say if the share price falls and everyone then decides to sell there shares at the same time, if you want to be successful in selling them is it really about time and how quick you react to the fall in share price, or is it more about trying to predict when a share price may fall and selling it just before it falls?
Also say you want to by a particular number of shares say 317 shares and you place a buy order for that amount, do you have to wait for a seller to be selling that exact quantity 317 for the exact price you bid?