Who has been buying Rakumachi,inc. stock?

3 distinct investors have filed 10 disclosed large-shareholding filings in Rakumachi,inc. (6037), most recently on 2026-04-23. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does Rakumachi,inc. have?

Rakumachi,inc. has 10 buy-side and 10 sell-side disclosures on record, covering ¥32.9B ($212.2M) in total reported value, spanning 2021-10-11 to 2026-04-23.

Where does StockDrifts get Rakumachi,inc. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Rakumachi,inc. 6037

Company

楽待株式会社Rakumachi,inc.

Investors

Buys

Total Value

¥32.9B ($212.2M)

Avg Return

+37.10%

Last Filing

2026-04-23

Rakumachi,inc. (6037) has 10 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥32.9B ($212.2M) in reported transaction value. The earliest filing StockDrifts holds for Rakumachi,inc. is dated 2021-10-11; the most recent is 2026-04-23. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +37.10%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-04-23	BUY	unknown	坂口幸亜	activist	100.0K	¥933	-3.0%	¥93M ($602K)
2026-04-23	BUY	negotiated	坂口直大	activist	13.4M	¥933	-3.0%	¥12.5B ($80.5M)
2026-04-02	BUY	negotiated	坂口幸亜	activist	100.0K	¥919	-1.0%	¥92M ($593K)
2026-04-02	SELL	negotiated	坂口直大	activist	13.4M	¥919	+1.0%	¥111M ($714K)
2025-10-22	BUY	Market Buy	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥1,305	-26.8%	¥10M ($67K)
2025-10-22	BUY	Market Buy	坂口直大 Sakaguchi Naohiro	activist	13.5M	¥1,305	-26.8%	¥1.2B ($7.5M)
2025-10-07	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥1,326	-28.0%	¥133M ($855K)
2025-10-07	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	13.5M	¥1,326	-28.0%	¥17.9B ($115.5M)
2025-07-01	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥966	-1.1%	¥97M ($623K)
2025-07-01	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	13.5M	¥966	+1.1%	¥153M ($989K)
2025-05-13	SELL	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	1.1M	¥879	-8.7%	¥190M ($1.2M)
2025-04-23	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥890	+7.3%	¥89M ($574K)
2025-04-23	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	13.7M	¥890	-7.3%	¥201M ($1.3M)
2025-04-18	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥909	+5.1%	¥91M ($586K)
2025-04-18	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	13.9M	¥909	-5.1%	¥206M ($1.3M)
2025-01-10	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.1M	¥720	-32.6%	¥169M ($1.1M)
2025-01-10	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥720	+32.6%	¥72M ($465K)
2024-12-11	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥720	+32.6%	¥72M ($465K)
2024-12-11	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.3M	¥720	-32.6%	¥55M ($354K)
2024-11-07	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥699	+36.6%	¥70M ($451K)
2024-11-07	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.4M	¥699	-36.6%	¥68M ($439K)
2024-10-16	BUY	Market Buy	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥756	+26.3%	¥800M ($5.2M)
2024-10-16	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥756	+26.3%	¥800M ($5.2M)
2024-10-16	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.5M	¥756	+26.3%	¥1.1B ($7.2M)
2024-10-16	BUY	Market Buy	坂口直大 Sakaguchi Naohiro	activist	14.5M	¥756	+26.3%	¥1.1B ($7.2M)
2024-06-26	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥547	+74.6%	¥55M ($353K)
2024-06-26	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥547	+74.6%	¥55M ($353K)
2024-06-26	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.6M	¥547	+74.6%	¥7.9B ($51.0M)
2024-06-26	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.6M	¥547	+74.6%	¥7.9B ($51.0M)
2024-03-12	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.8M	¥516	+85.1%	¥7.6B ($48.9M)
2024-03-12	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	14.8M	¥516	+85.1%	¥7.6B ($48.9M)
2024-03-12	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥516	+85.1%	¥52M ($333K)
2024-03-12	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	100.0K	¥516	+85.1%	¥52M ($333K)
2023-06-01	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	50.0K	¥454	+110.3%	¥23M ($146K)
2023-06-01	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	7.5M	¥454	+110.3%	¥3.4B ($22.0M)
2022-03-16	BUY	negotiated	坂口直大 Sakaguchi Naohiro	activist	7.5M	¥411	+132.4%	¥3.1B ($19.9M)
2022-03-16	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	50.0K	¥411	+132.4%	¥21M ($133K)
2022-03-16	BUY	negotiated	坂口幸亜 Yukia Sakaguchi	activist	50.0K	¥411	+132.4%	¥21M ($133K)
2022-03-16	SELL	negotiated	坂口直大 Sakaguchi Naohiro	activist	7.5M	¥411	-132.4%	¥19M ($122K)
2021-10-11	SELL	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	722.0K	¥399.5	-139.1%	¥48M ($308K)

Frequently asked questions

Who has been buying Rakumachi,inc. stock?: 3 distinct investors have filed 10 disclosed large-shareholding filings in Rakumachi,inc. (6037), most recently on 2026-04-23. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does Rakumachi,inc. have?: Rakumachi,inc. has 10 buy-side and 10 sell-side disclosures on record, covering ¥32.9B ($212.2M) in total reported value, spanning 2021-10-11 to 2026-04-23.
Where does StockDrifts get Rakumachi,inc. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Rakumachi,inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.