Rumours that Apple will buy the British chip designer Arm are treated with ridicule in Silicon Valley but, in London, they were enough to push its shares up by 30 per cent at one point on Thursday.
A note in the Lex column of the Financial Times on Friday ponders whether to be long or short on the stock after a 60 per cent rise so far this year. Read more












Richard Waters
Chris Nuttall
Maija Palmer
Robin Kwong
Tim Bradshaw