Marissa Mayer: “Yahoo’s Geek Goddess” as ‘Vanity Fair’ has called her.  Photograph: Jason Alden/Bloomberg

To the list of books about transformative technology companies and their visionary leaders we can now add one about Silicon Valley’s wayward soul and (...)

Yahoo CEO Marissa Mayer. The company has  unveiled a plan for a tax-free spin-off of its 15 per cent stake in China’s Alibaba.

Yahoo plans to spin off its 15 per cent stake in China’s Alibaba, responding to pressure to hand over to shareholders its prized e-commerce investment(...)

Yahoo senior vice president of mobile and emerging products Adam Cahan. Photograph: Ethan Miller/Getty

Yahoo is setting its sights on the growth of wearables and other mobile devices as the internet star of the last dotcom boom tries to transform itself(...)

 Yahoo has replaced Google as the default search engine on Firefox browsers in the US. Photo: Bloomberg

Yahoo has replaced Google as the default search engine on Firefox browsers in the US, as Yahoo chief executive officer Marissa Mayer seeks out more p(...)

AOL   chief executive  Tim Armstrong has been credited with reviving a dying brand. Photograph: Reuters

At least two top-10 Yahoo shareholders are so unhappy with chief executive Marissa Mayer’s turnaround efforts that they are making a plea to AOL chie(...)

Marissa Mayer: finally has something to crow about. Photograph: Simon Dawson/Bloomberg

Marissa Mayer finally has something to crow about as Yahoo reported a robust third-quarter performance this week, breaking a long pattern of revenue d(...)

Yahoo said that it’s display advertising revenue, which accounts for roughly 40 per cent of Yahoo’s total revenue, declined 5 per cent in the third quarter

Yahoo reported a modest increase in revenue during the third quarter, exceeding lackluster Wall Street targets, as the Internet company’s online disp(...)

Yahoo is under increasing pressure to reveal how it plans to shore up its core online advertising business. Photograph: Andrew Harrer/Bloomberg

Yahoo! is close to investing in Snapchat in a funding round that values the start-up at $10 billion (€8 billion), according to a person with knowledge(...)

Marissa Mayer, president and CEO of Yahoo, who has called mobile a key part of her turnaround effort, has stepped up dealmaking as she looks to jump start growth at the web portal. Photograph: Britta Pedersen/EPA

Yahoo is adding to its mobile lineup with the acquisition of analytics company Flurry. It is paying more than $300 million for the San Francisco-based(...)

Investors can now bet that female chief executives, such as Yahoo’s Marissa Mayer, will lead their companies to out-perform the market. Photograph: Jason Alden/Bloomberg

Barclays is selling an exchange-traded note tied to public companies with female executives, betting on demand for products that promote women in lead(...)