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US bans federal agencies from using popular anti-virus software
Retailer’s slide comes as US stocks inch up from record levels struck on Monday
Move is big victory for retailers such as Walmart over major US manufacturers
The online juggernaut is muscling in on gadget advice
Best Buy leads sector lower as Geek Squad faces fresh competition
US electronics retailer’s shares at all-time high along with S&P 500 and Nasdaq
Not all physical retailers are flummoxed
Advance accompanies mixed trading on Wall Street
Focus on integrating physical stores and online sales pays off
Broad equity market rises as S&P 500, Dow Jones and Nasdaq extend march into record territory
Consumer groups, carmakers and transport sector make gains
US stocks climb as energy and materials sectors lead the way
Dow edges lower while Nasdaq ticks up
International Edition