Davis W. Edwards is a managing director at Macquarie Group and is responsible for managing the credit risks of its North American energy investments. Macquarie, Australia’s preeminent fi nancial conglomerate, is one of the largest energy companies in North America through its subsidiary, Macquarie Cook Energy. Previously, Davis headed the Mathematical Arbitrage Trading Desk at Bear Stearns. With several billion in capital and operated like a private hedge fund, the Mathematical Arbitrage Trading Desk handled Bear Stearns’s proprietary investments in the equities, energy, commodities, and option markets.