Some of Twitter’s biggest investors are hanging on to their stock, even as restrictions on selling the shares are set to lift today. About 480 million(...)

Denis O’Brien grew his wealth by $800 million last year, according to Forbes, making him the second richest person in Ireland and the 234th in the world with a fortune of $6 billion. Photograph: David Sleator/The Irish Times

Denis O’Brien, the telecoms and media entrepeneur, added $800 million (€579m) to his fortune in 2013, according to the just published Forbes Bi(...)

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And you thought Justin Bieber was a manufactured pop act. Z-Machines literally is. This band of robots plays their own instruments. They jam harder wh(...)

None of Twitter’s founders comes off well in Nick Bilton’s absorbing book about the creation of the social media firm. Kacper Pempel/Reuters.

Is there some rule that the founders of social networks have to behave so anti-socially? The twists, turns and double-crosses in Hatching Twitter, Nic(...)

Potential investors in Twitter have been left in the dark about key facts. REUTERS/Dado Ruvic/Files

A tweet running to 135 characters was all it took late on Thursday to launch one of the year’s biggest financial stories: that Twitter has taken the(...)