Freeport hit by falling copper prices

Company reported Q4 loss of $2.85bn and sales fall of 11%

Weak US earnings weigh on Wall Street

Caution from blue-chip companies shows headwinds from dollar

DR Horton buoys US homebuilders

Builder’s earnings beat Wall Street forecasts

Small can be beautiful but quality is key

Avoid the urge to punt the riskiest small-cap stocks

US diners lose their taste for Big Macs

Fall in same-store sales shows McDonald’s global challenges

DreamWorks restructuring prompts sell-off

Shrek and Madagascar animator sheds jobs and cuts film output

Box secures $1.7bn valuation in IPO

Cloud storage company priced above expectations

Airlines fly high on cheaper fuel

Shares rally as Dow Transports rebounds

Gross’s $700m lifts Janus flows to $2bn

Mutual fund company enjoys influx for first time in five years

US investors double down on biotech bets

Sector adds to 2014 gains, bucking wider January sell-off

US bank stocks give up year’s gains

Hurt by disappointing fourth-quarter earnings and market moves

IBM lags behind in another revenue decline

Sales hurt by strong dollar and divestments

Delta flies as earnings beat forecasts

Investors also like airline’s Q1 operating margin guidance

Shake Shack seeks $568m valuation

Burger joint plans to use $92m proceeds on new openings

S&P 500 earnings face dollar headwind

Foreign sales important driver of earnings

Precision Castparts hit by energy downturn

US stocks rally as consumer confidence hits decade high

Best Buy blighted by gloomy sales outlook

Electronics retailer sinks on S&P 500 after forecasting flat sales growth

Slim doubles stake in New York Times

Billionaire exercises warrants issued over $250m loan

Wells Fargo profits edge higher

Improved economy reduces loan loss reserves

Materials lead US equities lower

Freeport-McMoRan crushed by copper slide