Shueisha has reported that the 15th volume of the Jujutsu Kaisen manga initial approximately 1.5 million copies . This marks the first time any of the volumes has sold over 1 million copies in its initial print run.
Including digital copies, the series as a whole will have over 36 million copies in circulation (unsold). Additionally, it's worth noting that Shueisha reported three weeks ago that the manga had a total of 30 million copies in circulation .
The number of copies of the Jujutsu Kaisen manga in circulation has increased by more than 420% in the last five months since the premiere of its anime adaptation.
Source: ANN
