Record iPhone and iPad sales pushed Apple quarterly revenue to a new high but shares tumbled Monday over concerns of weaker profits ahead in fierce mobile gadget markets.
Microsoft soared to record revenues in the last quarter, confounding Wall Street forecasts on the back of strong demand for Xbox consoles, Surface tablets and Internet "cloud" services.
BlackBerry shares leapt more than nine percent Tuesday as the troubled Canadian smartphone maker got a boost from news of contract to supply the US military with 80,000 new handsets.
The French state has raised 451 million euros ($614 million) by selling a one percent stake in European aircaft and defence corporation Airbus Group, the economy minister said Thursday.
Shares in Fiat soared on Thursday after it announced it would take full control of Chrysler, with optimism for the historic deal's potential outweighing concerns over its cost.
Twitter shares tumbled Friday after a brokerage analyst warned the popular messaging network was overvalued following a meteoric rise since its initial public offering in November.
Facebook chief Mark Zuckerberg will sell a chunk of his stake in the company, cashing in some $2.3 billion, as part of a new share offering by the huge social network.
China's CNOOC and CNPC, Anglo-Dutch giant Royal Dutch Shell and France's Total joined Brazilian state operator Petrobras on Monday in winning production rights to the huge "Libra" Atlantic oilfield.
Microsoft announced a new $40 billion share buyback on Tuesday as part of an effort by the transitioning US tech giant to return more cash to stockholders.
Shares in Samsung Electronics fell 1.7 percent in early trade in Seoul on Friday, hours after the launch of the company's latest flagship smartphone in New York City.
China Everbright Bank, a mid-sized lender, said Wednesday it would relaunch plans to list shares in Hong Kong, after earlier aborted attempts at an overseas stock offer.