indeed, , become the third most value boucaud? the holy grail, if you like! they have maintained a lead for a considerable period. i think it is interesting that in the context of those big companies like apple and alphabet as well, they do have a predominant in terms of earnings in one particular area or product whether that should be advertising or in terms of the iphone with apple. whereas microsoft has a better split in terms of its revenue stream. that provides it with some degree of insulation if there were to be any market conditions which could change over time. that provides impetus from the microsoft standpoint but clearly there is still plenty of opportunity for the company to continue to enhance its share price. this one says... the chief executive has been fishermen in that? indeed and i think having that broad range of revenue streams is hugely important. —— been instrumental in that. that's it from business live today. there will be more business news throughout the day on the bbc live webpage and on world business