Currency traders can't lose as trusted strategies reap big gains

New York

EVERYONE's a winner in the US$5.3 trillion-a- day global currency market this year.

For just the second time in the past decade, three major foreign-exchange trading strategies are all producing positive returns. The carry trade, in which investors borrow in Group of 10 currencies with low interest rates and use the proceeds to buy assets with higher yields, is on pace for its biggest annual gain since 2012, according to Deutsche Bank AG index data.