Who has been buying Smaregi, Inc. stock?

16 distinct investors have filed 29 disclosed large-shareholding filings in Smaregi, Inc. (4431), most recently on 2026-05-12. 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 Smaregi, Inc. have?

Smaregi, Inc. has 29 buy-side and 45 sell-side disclosures on record, covering ¥26.4B ($170.4M) in total reported value, spanning 2021-03-22 to 2026-05-12.

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.

Smaregi, Inc. 4431

Company

株式会社スマレジSmaregi, Inc.

Investors

Buys

Total Value

¥26.4B ($170.4M)

Avg Return

-1.21%

Last Filing

2026-05-12

Smaregi, Inc. (4431) has 29 disclosed large-shareholding filings and 45 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥26.4B ($170.4M) in reported transaction value. The earliest filing StockDrifts holds for Smaregi, Inc. is dated 2021-03-22; the most recent is 2026-05-12. Across these filings the average return since disclosure is -1.21%, 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
2026-10-08	BUY	unknown	株式会社徳田	strategic	2.0M	¥3,780	-	-
2026-10-08	SELL	unknown	德田誠	strategic	2.9M	¥3,780	+0.4%	¥298M ($1.9M)
2026-08-21	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥3,395	+10.9%	¥756M ($4.9M)
2026-05-12	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	2.0K	¥2,265	-66.2%	¥58M ($374K)
2026-05-12	SELL	unknown	アセットマネジメントOne株式会社	other	1.3M	¥2,265	-66.2%	¥638M ($4.1M)
2026-04-07	BUY	unknown	株式会社山本博士事務所	strategic	3.3M	¥2,250	-	-
2026-04-07	SELL	unknown	山本博士	strategic	540.6K	¥2,250	-67.3%	¥66M ($429K)
2026-03-24	SELL	Market Buy	ヴォイチェフヤクブポドバス(Wojciech Jakub Podobas) Wojciech Jakub Podobas	passive	701.1K	¥2,077	-81.3%	¥622M ($4.0M)
2025-09-19	SELL	unknown	望月拓也 Takuya Mochizuki	strategic	93.6K	¥3,165	-19.0%	¥231M ($1.5M)
2025-09-19	SELL	unknown	株式会社MOCCI MOCCI Co., Ltd.	strategic	1.1M	¥3,165	-19.0%	¥324M ($2.1M)
2025-08-25	BUY	unknown	山本博士 Hiroshi Yamamoto	strategic	570.6K	¥3,445	-	-
2025-08-25	BUY	unknown	株式会社山本博士事務所 Dr. Yamamoto Office Co., Ltd.	strategic	3.3M	¥3,445	-	-
2025-08-05	SELL	unknown	山本博士 Hiroshi Yamamoto	strategic	570.6K	¥3,625	-3.9%	¥293M ($1.9M)
2025-08-05	SELL	unknown	株式会社山本博士事務所 Dr. Yamamoto Office Co., Ltd.	strategic	3.3M	¥3,625	-3.9%	¥36M ($230K)
2025-05-02	BUY	Market Buy	ヴォイチェフヤクブポドバス(Wojciech Jakub Podobas) Wojciech Jakub Podobas	passive	1.0M	¥3,080	+22.2%	¥3.1B ($19.9M)
2025-04-07	BUY	Market Buy	ウィッシュボーンマネジメントエルピー (WISHBONE MANAGEMENT LP) WISHBONE MANAGEMENT LP	passive	1.6M	¥2,428	+55.1%	¥593M ($3.8M)
2025-02-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	28.2K	¥2,656	-41.8%	¥26M ($169K)
2025-02-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.5M	¥2,656	-41.8%	¥863M ($5.6M)
2024-08-02	SELL	unknown	德田誠 MAKOTO TOKUDA	strategic	3.0M	¥1,951	-93.0%	¥8M ($50K)
2024-08-02	SELL	unknown	株式会社徳田 Tokuda Co., Ltd.	strategic	2.0M	¥1,951	-93.0%	¥4M ($25K)
2024-07-19	SELL	unknown	株式会社MINATO MINATO Co., Ltd.	strategic	1.2M	¥2,367	-59.1%	¥9M ($60K)
2024-07-19	SELL	unknown	湊隆太朗 Ryutaro Minato	strategic	424.4K	¥2,367	-59.1%	¥144M ($931K)
2024-07-19	SELL	unknown	湊隆太朗 Ryutaro Minato	strategic	424.4K	¥2,367	-59.1%	¥144M ($931K)
2024-07-19	SELL	unknown	株式会社MINATO MINATO Co., Ltd.	strategic	1.2M	¥2,367	-59.1%	¥9M ($60K)
2024-04-22	BUY	Market Buy	ウィッシュボーンマネジメントエルピー (WISHBONE MANAGEMENT LP) WISHBONE MANAGEMENT LP	passive	1.3M	¥2,239	+68.2%	¥625M ($4.0M)
2024-03-04	SELL	unknown	德田誠 MAKOTO TOKUDA	strategic	3.0M	¥2,284	-64.8%	¥229M ($1.5M)
2024-03-04	SELL	unknown	株式会社徳田 Tokuda Co., Ltd.	strategic	2.0M	¥2,284	-64.8%	¥4M ($29K)
2024-01-22	BUY	Market Buy	ウィッシュボーンマネジメントエルピー (WISHBONE MANAGEMENT LP) WISHBONE MANAGEMENT LP	passive	1.0M	¥2,498	+50.7%	¥2.6B ($16.7M)
2023-11-08	SELL	Market Buy	ウィッシュボーンマネジメントエルピー (WISHBONE MANAGEMENT LP) WISHBONE MANAGEMENT LP	passive	950.0K	¥3,210	-17.3%	¥801M ($5.2M)
2023-09-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.9M	¥2,408	+56.4%	¥473M ($3.1M)
2023-09-07	BUY	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	37.2K	¥2,408	+56.4%	¥9M ($61K)
2023-08-18	SELL	unknown	株式会社徳田 Tokuda Co., Ltd.	strategic	2.0M	¥2,152	-75.0%	¥13M ($82K)
2023-08-18	SELL	unknown	德田誠 MAKOTO TOKUDA	strategic	3.1M	¥2,152	-75.0%	¥275M ($1.8M)
2023-07-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.7M	¥2,071	+81.8%	¥634M ($4.1M)
2023-07-07	BUY	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	34.2K	¥2,071	+81.8%	¥16M ($105K)
2023-06-26	SELL	unknown	山本博士 Hiroshi Yamamoto	strategic	649.2K	¥2,295	-64.0%	¥500M ($3.2M)
2023-06-26	BUY	unknown	株式会社山本博士事務所 Dr. Yamamoto Office Co., Ltd.	strategic	3.3M	¥2,295	-	-
2023-04-07	BUY	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	12.7K	¥2,703	+39.3%	¥3.1B ($20.1M)
2023-04-07	SELL	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	26.0K	¥2,703	-39.3%	¥16M ($103K)
2023-04-07	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.3M	¥2,703	+39.3%	¥3.6B ($23.3M)
2023-03-07	BUY	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.6M	¥2,383	+58.0%	¥627M ($4.0M)
2023-03-07	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	other	28.1K	¥2,383	-	¥67M ($432K)
2023-03-07	BUY	Market Buy	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	32.3K	¥2,383	+58.0%	¥5M ($30K)
2023-02-02	SELL	unknown	株式会社MOCCI MOCCI Co., Ltd.	strategic	1.2M	¥2,277	-65.3%	¥22M ($144K)
2023-02-02	SELL	unknown	望月拓也 Takuya Mochizuki	strategic	167.4K	¥2,277	-65.3%	¥434M ($2.8M)
2023-01-11	BUY	unknown	アセットマネジメントOneインターナショナル Asset Management One International Ltd.	other	28.8K	¥2,345	+60.5%	¥68M ($436K)
2023-01-11	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.3M	¥2,345	+60.5%	¥3.1B ($19.7M)
2022-06-07	SELL	Market Buy	キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company) Capital Research and Management Company	passive	835.2K	¥911	-313.3%	¥270M ($1.7M)
2022-03-04	BUY	Market Buy	ウィッシュボーンマネジメントエルピー (WISHBONE MANAGEMENT LP) WISHBONE MANAGEMENT LP	passive	1.2M	¥1,469	+156.3%	¥311M ($2.0M)
2022-03-02	SELL	unknown	山本博士 Hiroshi Yamamoto	strategic	868.0K	¥1,515	-148.5%	¥3M ($19K)

Showing the 50 most recent of 87 filings.

Frequently asked questions

Who has been buying Smaregi, Inc. stock?: 16 distinct investors have filed 29 disclosed large-shareholding filings in Smaregi, Inc. (4431), most recently on 2026-05-12. 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 Smaregi, Inc. have?: Smaregi, Inc. has 29 buy-side and 45 sell-side disclosures on record, covering ¥26.4B ($170.4M) in total reported value, spanning 2021-03-22 to 2026-05-12.
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.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.