Mid caps have outshone their bigger and smaller rivals over the past decade, though the easy money of recent years has distorted the picture.
Currency on track for worst week since July last year, as allegations against president Donald Trump continue to weigh.
Wall Street endures worst opening of the year as investors take fright at New York Times report that Donald Trump tried to interfere with federal investigation.
Small caps have had an impressive year and the sector's table topper has rocketed after two years rooted to the bottom.
Stock tumbles as first quarterly results since listing underwhelm, while new portfolio manager backers of the social messaging app emerge.
Strong numbers from United and American boost airline sector, but Spirit misses out on rally as brawl breaks out in Florida airport following cancellations.
Legendary investor Warren Buffett tells CNBC he has 'sold a reasonable amount of stock' as the computer business faces stuff competition.
Avoiding the hype has stood Rahul Narang in good stead as a technology investor. The manager tells Daniel Grote the pursuit of growth doesn’t mean ignoring valuations.
Technology giant reports only second-ever quarterly fall in iPhone sales, overshadowing news of dividend hike and more buybacks.
Advanced Micro Devices, one of Citywire AA-rated Frank Jennings's best performing stocks last year, slumps to bottom of S&P 500 on margins disappointment.