ProShares UltraShort Bloomberg Natural Gas (KOLD) is down -16.4%, or -$13.61 to $69.20. Published first on TheFly – the ultimate source for real-time, market-moving breaking financial news. Try Now>> See today’s best-performing stocks on TipRanks >> Read More on KOLD: ProShares UltraShort Bloomberg Natural Gas falls -15.1% Largest borrow rate increases among liquid names Disclaimer & DisclosureReport an Issue