SCOTTSDALE, Ariz / AP Olga Korbut walks around the man-made lake in anonymity, despite the bright red warmup jacket with “Olga” in sparkly letters on her left shoulder. Korbut likes it here, this little suburban slice of nature, a place where she can get her body moving, listen to the birds, stroll alongside the dog walkers. Korbut stops at …

  Bloomberg OPEC has never taken supply cuts so seriously, and hedge funds are loving it. Investor optimism that West Texas Intermediate oil prices will rise reached an all-time high as the Organization of Petroleum Exporting Countries delivered on pledges to reduce production. The International Energy Agency said the group has achieved a record 90 percent initial compliance with an …

Bloomberg Lower oil prices and the scrapping of fuel subsidies have allowed India’s biggest energy companies to slash borrowings to the lowest in at least eight years. Total debt at Indian Oil Corp., the nation’s largest refiner, stood at 419 billion rupees ($6.2 billion) at the end of September, down from 863 billion rupees in March 2014, according to the …