Janet Yellen: Rather than focus on the US recovery, she stressed “the outlook abroad”. Photograph: Andrew Harrer/Bloomberg

Step forward Janet Yellen, the first central banker to the world. The US Federal Reserve she chairs kept rates on hold last week even while the US eco(...)

Outside Tokyo Stock Exchange: Japanese November-April stock market returns typically exceed May-October by 8.3 percentage points annually.  Photograph: Yoshikazu Tsuno/AFP/Getty Images

The old “sell in May and go away” adage invariably does the rounds at this time of year. Is it a silly market myth or is there something to the notion(...)

Hedge fund manager Stephen Jen is bracing for more pain in emerging markets. (Photograph: Jin Lee/Bloomberg)

Stephen Jen landed in Hong Kong in early January 1997 as Morgan Stanley’s newly minted exchange-rate strategist for Asia. He was soon working aroun(...)

 Jerome Kerviel arrives at a  Paris courthouse  accused of gambling tens of billions of euros  of Societe Generale’s money in outrageous secret trades that humiliated the French banking powerhouse and exposed a need for tighter risk controls. Photograph: Thibault Camus/AP Photo

Sean Quinn’s €3.2 billion punt on Anglo-Irish Bank is unparalleled in Irish investment history, but ignominious blow-ups are nothing new in the financ(...)

Traders work on the floor of the New York Stock Exchange. Photograph: Brendan McDermid/Reuters

It’s easy for active investors to drown in a sea of misinformation. There’s no shortage of confident commentary telling investors and traders what to (...)

Serious Money: John Looby

This is a month of anniversaries. Five years ago this month, Lehman Bros collapsed dramatically. The global credit system froze. Trust between banks, (...)