Twitter’s founding investor expected to net more than $1bn from flotation
Evan Williams will not be the biggest winner, private equity boss Suhail Rizvi is believed to hold 15% stake worth at least $1.9bn
Who are the Twitter millionaires?
Early Twitter backers who can expect an IPO windfall include a Saudi prince, a Hollywood insider and a Murdoch lieutenant
Google’s new concessions on European search will put rivals’ logos into results
Joaquin Almunia says that new commitments on search could avoid legal action by giving rivals greater visibility via auction. By Ian Traynor and Charles Arthur
Microsoft’s Steve Ballmer gives final emotional speech to staff
Outgoing chief executive known for September 2000 'monkey dance' hints at internal meeting that he is being pushed out. By Samuel Gibbs
Twitter files for Thanksgiving IPO
The social networking platform has submitted documents to the SEC and is expected to reveal its flotation plans this week. By Alex Hern
Europe’s tech sector should hold its nerve – the rewards are out there
Jemima Kiss: More than 40 European tech companies are worth more than £500m, venture capitalists say. Are things really looking up?
How BlackBerry users may be affected by sale – Q&A
The effect on consumers if the technology firm changes hands
How BlackBerry buyout could bear fruit
The man billed as Canada's answer to Warren Buffett is preparing to take a gamble on technology industry basket case
Twitter’s cast of characters see few limits to profits as IPO approaches
Having learned lessons from Facebook's public pratfall, founders and investors look set for a stock market payday
Dyson accuses Samsung of vacuum cleaner ‘rip-off’
UK firm says Samsung's Motion Sync vacuum cleaner used technology found in two Dyson appliances, the DC37 and DC39
Microsoft buys Nokia handset business for €5.4bn
Deal delivers Europe's last big handset maker into US ownership and moves Microsoft firmly into device-manufacturing business
BlackBerry sales hit by fears over company’s future
Firm's financial woes appear to be worrying clients such as Morgan Stanley, which has delayed upgrade to latest model
Steve Ballmer heads for retirement, but where now for Microsoft?
The software giant made huge profits under its departing CEO – but it will need to adapt to the era of tablets and smartphones
Facebook’s value climbs above $100bn for first time
One year on from its record low, the company closed at $41.34, bringing its value by market capitalisation to $100.6bn. By Jemima Kiss
Tech giants may be huge, but nothing matches big data
When Nasdaq stopped trading this week, it again showed how global firms are at the mercy of a power that created them