Why is that data provider yahoo or google does not reflect the right open price for FTSE100? When market open the price may not be like yestersday close price. Below is a picture of the FTSE100 for the previous week. Obviously there are open gap compared to yestersday close but the data in yahoo or google has all open and close price the same.
are you serious - using yahoo or googling up price data - that sums it up Im afraid - Ask Jeeves.com maybe has more reliable data