Dollars in the detail; banks pan for gold in 'data lakes'
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LONDON (Reuters) - From sending special offers on restaurants to burger-loving current account holders to selling anonymised credit card records, banks are racing to monetize the huge troves of data they hold.Wall Street trails Silicon Valley in using customer information to boost revenue but with tech giants such as Amazon and Google wading onto their turf with forays into lending and payments, banks including JPMorgan, HSBC and Barclays are moving to narrow the gap.Mining mountains of trading..