Arbitrage normally ensures that covered interest parity (CIP) holds. Until recently, excess profits, if any, were documented to last merely seconds and reach a few pips. Instead, this paper finds that following the Lehman bankruptcy, these were large, persisted for months and involved strategies...

Arbitrage normally ensures that covered interest parity (CIP) holds. Until recently, excess profits, if any, were documented to last merely seconds and reach a few pips. Instead, this paper finds that following the Lehman bankruptcy, these were large, persisted for months and involved strategies...

The empirical financial literature has recently suggested that the US stock market might be efficient in bad times and inefficient in good times. This article explains why some psychological phenomena such as wishful thinking, overconfidence and the house money effect might cause deviations from...