NYSE trader: an emphasis on share prices and on meeting quarterly earnings expectations has led to destructive short-term behaviour by some chief executives. Photograph: EPA/Justin Lane

The idea that a company’s primary purpose is to enrich its shareholders is the “dumbest idea in the world”, according to high-profile GMO strategist J(...)

 A trader works on the floor of the New York Stock Exchange. The Investors’ Intelligence poll of newsletter writers has seen the biggest fortnightly jump from bears to bulls in more than 40 years. Photograph: Spencer Platt/Getty Images

Where has all the fear gone? Last month, the S&P 500 was in correction mode, and the Vix, or fear index, was soaring as traders bought protection (...)

Surely the exploding costs of Obamacare would lead to vast amounts of red ink, right? Well, no. Photograph:  Chip Somodevilla/Getty Images

The great American Ebola freak-out of 2014 seems to be over. The disease is still ravaging Africa, and as with any epidemic, there’s always a risk of (...)

Duracell a “brilliant move” for Berkshire, analyst says  Photograph: Bloomberg

Warren Buffett’s Berkshire Hathaway said it would buy Procter & Gamble’s Duracell battery unit in a stock swap, taking over a business the billion(...)

Battered image: Tesco’s auditor, PricewaterhouseCoopers, warned in May of the “risk of manipulation” of financial results. photograph: jeff j mitchell/getty images

The announcement that Tesco is to be investigated by the UK’s serious fraud office has once again shone a light on murky accounting practices in the c(...)

Last week, I compared driving a car to investing. Everyone can enjoy the benefits of driving if they mitigate the risk of accidents. So it is with inv(...)

Tough times: a trader on the floor of the NYSE during recent market falls. Photograph: Spencer Platt/Getty Images

Pullbacks, corrections, bear markets, crashes – what’s the difference exactly? The terms are often used loosely, but a pullback denotes a brief single(...)

Warren Buffett: last week lost more than $2 billion in two days. Photograph: Carlo Allegri/Reuters
Stocktake

Warren Buffett, we’re told, is having a disastrous time.His Tesco shareholding has cost him dearly in recent months, while last week he lost more than(...)

LeBron James: that rarest of commodities – a prodigy who lived up to his advance billing. Photograph: Hans Deryk/Reuters.

Beats by Dre headphones began running an evocative television commercial last weekend showing basketball superstar LeBron James returning to his na(...)

New data indicating strength in the US economy helped major US, European and pan-world stock indexes to pare losses. Photograph: Reuters

Global equity markets tumbled again yesterday as investors continued to worry about world growth and on fears that Europe’s debt crisis was waking up (...)