Oricon (Japanese research organization) released its weekly manga ranking for the week of 2024/08/05.

Related rankings are compiled here
Oricon Comic Ranking Summary

The top-selling manga this week is volume 44 of "Space Brothers." The story tackles the mission to return to Earth.
In 2nd place is volume 15 of "Oshi no Ko." While the anime is gaining momentum, the manga is also entering its final chapter.
The 3rd spot goes to volume 5 of "Smoking Behind the Supermarket with You." In 4th place is volume 22 of "Record of Ragnarok." The 5th place is taken by volume 27 of "Jujutsu Kaisen."
Notable mentions beyond the top 5 include "One Piece," which maintains its 6th place position even after surpassing one million copies sold. Additionally, new releases have made their way into the rankings.

1st place: Space Brothers 44

To secure enough oxygen for their return to Earth, someone needs to exit the Oryol and transfer to the Soyuz. Standing up to the challenge are Mutta and Hibito. However, to transfer, they must leap through space and jump from one ship to the other. Amidst immeasurable fear, the brothers finally venture into the void of space!

2nd place: Oshi no Ko 15

The filming of the movie "15 Years of Lies" is progressing, depicting Ai's past. Aqua and Ruby's "father," Kamiki Hikaru, makes his appearance, and their relationship deepens. In the movie, Ruby, who plays Ai, and Aqua, who plays Kamiki, are about to shoot a kiss scene as siblings! While receiving the feelings of her friends, such as Kana Arima and Akane Kurokawa, who care about her, Aqua's revenge drama heads toward its final stage in Volume 15!

3rd place: Smoking Behind the Supermarket with You 5

By chance, they exchanged cigarettes for the first time outside the back of the supermarket. Amidst this, faint emotions began to take shape, along with still unknown pasts and precious words. Sasaki hesitates to move forward into the future. Yamada and Tayama are held back by their pasts. What light will shine on these kind and timid people?

4th place: Record of Ragnarok 22

Finally, the battle between Shinsengumi's First Unit Captain Sōji Okita and the Sword God of Beginnings, Susanoo-no-Mikoto, has begun! Without giving Susanoo a moment to draw his sword, Okita's fierce assault leads to an unexpected development! And then, Susanoo's divine weapon appears, which is...!? Everyone watching is overwhelmed and breathless... This is truly the ultimate blood battle of swords against swords!

5th place: Jujutsu Kaisen 27

Gojo's defeat—without time to mourn his death, Kashimo faces off against Sukuna! Kashimo, putting his life on the line, unleashes his Maximum Technique, but Sukuna completes his transformation through reincarnation...!? Meanwhile, behind the scenes of the Sukuna battle, comedian Takaba challenges Kenjaku to a one-on-one duel!!?

Oricon Weekly Manga Sales Ranking

Ranking / Estimated number of copies sold / Estimated cumulative sales volume / Title / Author

1 107,214 107,214 Space Brothers 44 Chuya Koyama
2 83,403 242,138 Oshi no Ko 15 Aka Akasaka × Mengo Yokoyari
3 64,295 64,295 Smoking Behind the Supermarket with You 5 Jinushi
4 63,439 100,663 Record of Ragnarok 22 (Art) Ajichika / (Story) Shinya Umemura / (Composition) Takumi Fukui
5 56,851 937,110 Jujutsu Kaisen 27 Gege Akutami
6 53,248 1,254,654 ONE PIECE 109 Eiichiro Oda
7 47,697 47,697 Toilet-Bound Hanako-kun 22 Iro Aida
8 45,630 45,630 GIANT KILLING 64 (Art) Tsujitomo / (Story & Research Cooperation) Masaya Tsunamoto
9 30,234 30,234 Tokyo Aliens 9 NAOE
10 29,249 29,249 I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too 6 Level Up Changed My Life (Art) Kazuomi Minatogawa / (Story) Miku / (Character Design) Rein Kuwashima