Which Billboard chart listed "Rein Me In" with a peak of number 39?

“Rein Me In” peaked at number 39 on the Billboard Global 200.

The Billboard Global 200 ranks songs worldwide using combined streaming and sales data from more than 200 territories. The Sam Fender and Olivia Dean collaboration reached number 39 on that global chart, giving the song an international benchmark beyond its particularly strong UK and Irish performance.

The song also made Fender’s first appearance on the US Billboard Hot 100, where it peaked at number 64. Those are separate charts: the Global 200 measures worldwide activity, while the Hot 100 focuses on the United States. Confusing those two charts is the main trap in this question.

“Rein Me In” performed even better in several national markets. It reached number one in the United Kingdom and Ireland, while also topping the chart in Australia and reaching number two in New Zealand. The Global 200 position captures its broad international reach rather than its peak in any one country.