I.O.I Suddenly Tops Instiz Chart for First Week of June 2026

I.O.I Suddenly ranked No. 1 on the Instiz chart for the first week of June 2026, giving I.O.I the leading position on the June 1-7 weekly ranking. The song recorded 35,697 points, placing ahead of ILLIT’s “It’s Me” and CORTIS’s “REDRED” in the reported chart order. ¹

The result adds another documented chart milestone for “Suddenly,” the title track from I.O.I’s third mini album, “I.O.I : LOOP.” The album was released on May 19 at 6 p.m. KST, and the song had already been reported at No. 1 on Melon’s Top 100 before the Instiz weekly result was published. ²

I.O.I Suddenly Leads The June 1-7 Instiz Chart

The June 1-7 Instiz ranking placed I.O.I’s “Suddenly” first with 35,697 points. ILLIT’s “It’s Me” was listed in second place, while CORTIS’s “REDRED” followed in third. ¹

The Instiz chart result was reported on June 9, 2026, after a series of earlier reports on the song’s domestic chart performance. SBS reported on June 1 that I.O.I’s new song “Suddenly” had topped Melon’s Top 100 after its May 19 release. The same report said the group had completed its Seoul concert schedule and was set to continue its tour in Bangkok the following weekend. ³

A more specific Melon milestone was reported by Newsis on May 29. “Suddenly” reached No. 1 on Melon’s Top 100 at 8 a.m. on May 29, the first day of I.O.I’s Seoul concerts at Jamsil Indoor Stadium, which were scheduled for May 29-31. ⁴

Release Details For I.O.I : LOOP

“Suddenly” was released as the title track of I.O.I’s third mini album, “I.O.I : LOOP.” Allkpop reported that the album arrived on May 19 at 6 p.m. KST and marked the group’s first release in about nine years. The same report described “Suddenly” as a synth-pop title track and noted that Jeon So Mi participated in writing the lyrics. ²

The title track had been identified before the album release. Newsis reported on April 27 that I.O.I disclosed the tracklist for “I.O.I : LOOP” through official social media. That report named “Suddenly” as the comeback title track and described it as a synth-pop song about unexpected waves of longing, with Jeon So Mi contributing to the lyrics. ⁶

The available source material does not provide a full production breakdown, full album credits, or streaming totals beyond the cited chart positions and the Instiz points total. What is documented is narrower and concrete: “Suddenly” was introduced as the title track before release, issued with “I.O.I : LOOP” on May 19, and later appeared at No. 1 on both Melon’s Top 100 and the first weekly Instiz chart of June.

Music Shows And Tour Schedule

JTBC reported that I.O.I released “I.O.I : LOOP” on May 19 and completed major music-show stages for “Suddenly” on Mnet, KBS2, MBC and SBS programs. The same report said the group began its “2026 I.O.I Concert Tour: LOOP” with three Seoul dates from May 29 to 31. ⁵

The Seoul concert schedule overlapped with the date of the reported Melon Top 100 milestone. Newsis stated that “Suddenly” reached No. 1 on Melon’s Top 100 at 8 a.m. on May 29, while also noting that the group’s Jamsil Indoor Stadium concerts were scheduled to begin that day and run through May 31. ⁴

SBS later reported on June 1 that I.O.I had completed the Seoul concert schedule and was set to continue the tour in Bangkok the following weekend. ³ The provided source material does not include additional Bangkok venue details, ticket information, attendance figures, or later tour stops.

The latest source-backed update places “Suddenly” at No. 1 on the Instiz chart for June 1-7, 2026, following its May 19 release as the title track of “I.O.I : LOOP” and its previously reported Melon Top 100 peak. The confirmed record shows a comeback single with documented chart results, defined release details, and tour activity tied to I.O.I’s 2026 schedule.

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Cloi Lee

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