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(...)

Marissa Mayer, president and chief executive officer of Yahoo, said in a Bloomberg interview that she did not mean to slight attendees at the dinner hosted by Interpublic Group of Cos at Cannes Lions, an advertising festival that drew Google, AOL, Microsoft and others.  Photograph: David Paul Morris/Bloomberg

Yahoo chief executive Marissa Mayer says she apologised and felt “really badly” for being late to a dinner with advertisers last week in Cannes, Franc(...)

Marissa Mayer: brought on board in 2012 to turn around the Web company.  Photograph: Simon Dawson/Bloomberg

Yahoo has revealed its workforce is less than 40 per cent female, and that many of the women are in non-leadership roles. The information is the web p(...)

“C-suite successes”: (l-r) Melanie Sheppard, finance director Pfizer; Marie Joycce, CFO, NTR; Carolann Lennon, managing director Eircom Wholesale; Suzanne Weldon, marketing director BWG; Sonia Flynn, managing director Facebook Ireland. 3:01

Earlier this year Vanity Fair ran a cover story on the woman hired to save Yahoo. “Will Success Spoil Yahoo’s Marissa Mayer?” the US publication asked(...)