Gryffin earns his second leader this year.
The track is Gryffin's second leader and Jepsen's first. "OMG" was remixed by MOTi, Josh Le Tissier and Alphalove, among others.
Gryffin first topped the tally for a week this past February with "Remember," with Zohara. The DJ first charted with his first top 10, "Love in Ruins" (featuring Sinead Harnett), which reached No. 6 in December 2017. Two weeks ago, he earned his first No. 1 on Top Dance/Electronic Albums with Gravity, which houses "OMG."