Tether (USDT), the controversial stablecoin issued by Tether Limited, has experienced its highest exchange volume since first being issued in 2015. According to data from CoinMetrics.io, on December 20, 2018, USDT had over $6.9B in exchange volume. The increase in exchange volume may hint at a return in trader confidence for Tether. On Tuesday, Bloomberg published a report suggesting that Tether Limited has the necessary USD collateral to back up its stablecoin. In November, Tether Limited reopened account verification and direct fiat redemption features for its traders.