JPMorgan Chase announced that the losses it got from the massive trading error in the bank’s London have already reached $5.8 billion. It estimated that the cost could go up to $7 billion. The bank was forced to restate its first quarter results after it was discovered that traders tried to hide losses from failed trades. The bank said that it lost $4.4 billion from its London office in the second quarter, which is up from the $2 billion loss it initially announced in May. The company recently...