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Abigail with attitude: Rise of opaque commodity houses

Another banker whose surname begins with “M” hit the headlines in April. Blythe Masters, the veteran JPMorgan banker, left the US firm.

Forty-something, Blythe is part of the commodities clear-out on Wall Street. Some would say that is a harsh epitaph to a gilded career. Masters, after all, was the youngest female managing director at JPMorgan and made her name as one of the pioneers of the credit default swap market.

In 2006, Masters stepped up to run the bank’s commodities operation, which expanded with the Bear Stearns acquisition as well as with the purchase of Sempra Commodities from Royal Bank of Scotland in 2010. “We need to be active in the underlying physical commodity market in order to understand and make prices,” she claimed at the time.

But things have not gone according to plan. JPMorgan became embroiled in a messy dispute with the Federal Energy Regulatory Commission, which accused the firm of manipulating power markets in California.

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