Gold was treading water on Wednesday, hovering near a four-month low hit in the previous session, as investors await US economic data, amid increasing optimism about growth and sluggish bullion demand in Asia. Spot gold was flat at $1,245.80 an ounce by 0636 GMT. The metal hit a four-month low of $1,240.61 on Tuesday, before closing flat and snapping a five-day losing streak.