Investing.com - The Investing.com weekly sentiment index revealed that 48.4% of traders were long gold, down from 52.5% a week earlier.
Gold has been under pressure recently as market players prepared for Fed rate hike later this month.
Meanwhile, only 29.8% of investors held long positions in the euro last week.
The European Central Bank is widely expected to cut its deposit rate and extend its quantitative easing program at a key meeting on Thursday.
The report also showed that 33.1% of investors were long the S&P 500, improving from 30.9% a week earlier.