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Defence contractors hit as Lockheed Martin knocked by Trump’s tweet
US stocks edge higher as Nike also weighs on indices
Investors hope billionaire activist will help rejuvenate beleagueredburrito chain
Hedge fund expected to push for operational improvements as chain recovers from food safety problems
American directors are older, serving longer and more likely to be men
Chipotle higher after hinting at recovery
Fast-food chain’s shares have declined 26% since the beginning of last year
Bank says US burrito chain at risk of ‘permanent’ loss of customers after food-safety crisis
Co-chief is confident his burrito chain can recover from food safety concerns
US energy stocks outperform as oil prices jump
US restaurant chain’s link to illness outbreaks sparks federal probe and roils share price
But energy sector is the worst performer on benchmark of US stocks
Reputation among consumers can fall quickly and hard
Solar-panel sector pressured by lower crude and natural gas prices and greater industry competition
Third day of declines in oil prices weighs on US stocks
Energy a poor performer on benchmark index as airline shares rise
Gap shares under pressure on the back of weaker than expected October sales
Chipotle slides after health scare shuts handful of restaurants
Kimberly-Clark is latest US company walloped by the strong dollar
Sell-off in technology stocks pushes US indices lower
Disruption in pork supply also affected results
Consumer discretionary and telecoms offer support to S&P 500
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