Who has been buying Waqoo Inc. stock?

8 distinct investors have filed 15 disclosed large-shareholding filings in Waqoo Inc. (4937), most recently on 2026-04-27. 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 Waqoo Inc. have?

Waqoo Inc. has 15 buy-side and 36 sell-side disclosures on record, covering ¥13.1B ($84.7M) in total reported value, spanning 2021-07-05 to 2026-04-27.

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.

Waqoo Inc. 4937

Company

株式会社WaqooWaqoo Inc.

Investors

Buys

Total Value

¥13.1B ($84.7M)

Avg Return

-10.51%

Last Filing

2026-04-27

Waqoo Inc. (4937) has 15 disclosed large-shareholding filings and 36 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥13.1B ($84.7M) in reported transaction value. The earliest filing StockDrifts holds for Waqoo Inc. is dated 2021-07-05; the most recent is 2026-04-27. Across these filings the average return since disclosure is -10.51%, 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
2026-04-27	SELL	unknown	相川佳之	other	989.8K	¥1,294	-85.6%	¥255M ($1.6M)
2026-04-27	BUY	unknown	SBCメディカルグループ株式会社	unknown	353.6K	¥1,294	-	¥458M ($3.0M)
2026-04-27	BUY	unknown	SBCメディカルグループ株式会社	unknown	353.6K	¥1,294	-	¥458M ($3.0M)
2026-04-27	SELL	unknown	相川佳之	other	989.8K	¥1,294	-85.6%	¥255M ($1.6M)
2025-12-25	BUY	acquisition	SBCメディカルグループ株式会社	corporate	1.9M	¥1,367	+75.7%	¥1.4B ($8.7M)
2025-12-25	SELL	acquisition	相川佳之	activist	0	¥1,367	-75.7%	¥1.4B ($8.7M)
2025-12-19	SELL	unknown	井上裕基	activist	346.0K	¥1,444	-66.3%	¥61M ($393K)
2025-12-19	SELL	unknown	井上裕基	activist	346.0K	¥1,444	-66.3%	¥61M ($393K)
2025-12-19	SELL	unknown	株式会社M&M	strategic	200.0K	¥1,444	-66.3%	¥60M ($386K)
2025-12-19	BUY	acquisition	SBCメディカルグループ株式会社	corporate	928.7K	¥1,444	+66.3%	¥829M ($5.3M)
2025-12-19	SELL	acquisition	相川佳之	activist	989.8K	¥1,444	-66.3%	¥4M ($24K)
2025-12-19	SELL	unknown	株式会社M&M	strategic	200.0K	¥1,444	-66.3%	¥60M ($386K)
2025-11-20	SELL	acquisition	SBCメディカルグループ株式会社 Sbc Medical Group Inc	corporate	353.6K	¥1,787	-34.4%	¥3M ($17K)
2025-11-20	SELL	acquisition	SBCメディカルグループ株式会社 Sbc Medical Group Inc	corporate	353.6K	¥1,787	-34.4%	¥3M ($17K)
2025-11-20	SELL	acquisition	SBCメディカルグループ株式会社 Sbc Medical Group Inc	corporate	353.6K	¥1,787	-34.4%	¥3M ($17K)
2025-11-20	SELL	acquisition	相川佳之 AIKAWA YOSHIYUKI	activist	989.8K	¥1,787	-34.4%	¥7M ($46K)
2025-11-20	SELL	acquisition	相川佳之 AIKAWA YOSHIYUKI	activist	989.8K	¥1,787	-34.4%	¥7M ($46K)
2025-11-20	SELL	acquisition	相川佳之 AIKAWA YOSHIYUKI	activist	989.8K	¥1,787	-34.4%	¥7M ($46K)
2025-06-27	SELL	unknown	井上裕基 Inoue Hiroki	activist	386.5K	¥954	-151.8%	¥35M ($227K)
2025-06-27	SELL	unknown	井上裕基 Inoue Hiroki	activist	386.5K	¥954	-151.8%	¥35M ($227K)
2025-06-27	SELL	unknown	株式会社M&M M&M Co., Ltd.	strategic	240.5K	¥954	-151.8%	¥36M ($229K)
2025-06-27	SELL	unknown	株式会社M&M M&M Co., Ltd.	strategic	240.5K	¥954	-151.8%	¥36M ($229K)
2025-06-17	BUY	Market Buy	株式会社BPMH BPMH Inc.	passive	18.2K	¥1,056	+127.5%	¥1.7B ($11.0M)
2025-01-09	SELL	unknown	井上裕基 Inoue Hiroki	activist	423.5K	¥1,110	-116.4%	¥55M ($358K)
2025-01-09	SELL	unknown	井上裕基 Inoue Hiroki	activist	423.5K	¥1,110	-116.4%	¥55M ($358K)
2025-01-09	SELL	unknown	株式会社M&M M&M Co., Ltd.	strategic	277.5K	¥1,110	-116.4%	¥27M ($171K)
2025-01-09	SELL	unknown	株式会社M&M M&M Co., Ltd.	strategic	277.5K	¥1,110	-116.4%	¥27M ($171K)
2024-12-26	BUY	Market Buy	株式会社BPMH BPMH Inc.	passive	198.7K	¥1,072	+124.1%	¥213M ($1.4M)
2024-10-18	BUY	unknown	井上裕基 Inoue Hiroki	activist	473.5K	¥1,269	-	-
2024-10-18	BUY	unknown	株式会社M&M M&M Co., Ltd.	strategic	301.5K	¥1,269	-	-
2024-05-22	SELL	unknown	相川佳之 AIKAWA YOSHIYUKI	other	989.8K	¥1,806	-33.0%	¥357M ($2.3M)
2024-05-22	SELL	unknown	相川佳之 AIKAWA YOSHIYUKI	unknown	989.8K	¥1,806	-33.0%	¥357M ($2.3M)
2024-05-22	SELL	negotiated	相川佳之 AIKAWA YOSHIYUKI	strategic	989.8K	¥1,806	-33.0%	¥2M ($11K)
2024-04-23	SELL	unknown	井上裕基 Inoue Hiroki	activist	473.5K	¥1,702	-41.1%	¥164M ($1.1M)
2024-04-23	SELL	unknown	株式会社M&M M&M Co., Ltd.	strategic	301.5K	¥1,702	-41.1%	¥104M ($672K)
2024-02-09	BUY	negotiated	SBCメディカルグループ株式会社 Sbc Medical Group Inc	strategic	353.6K	¥2,032	+18.2%	¥719M ($4.6M)
2024-02-09	BUY	negotiated	SBCメディカルグループ株式会社 Sbc Medical Group Inc	strategic	353.6K	¥2,032	-	¥719M ($4.6M)
2024-02-09	BUY	negotiated	SBCメディカルグループ株式会社 Sbc Medical Group Inc	strategic	353.6K	¥2,032	+18.2%	¥719M ($4.6M)
2024-01-12	BUY	Market Buy	パーシング株式会社 Pershing.Co.,Ltd	passive	190.4K	¥2,274	+5.6%	¥433M ($2.8M)
2023-12-06	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	137.6K	¥2,172	-10.6%	¥134M ($865K)
2023-10-04	BUY	negotiated	相川佳之 AIKAWA YOSHIYUKI	strategic	989.8K	¥2,267	-	¥3M ($22K)
2023-10-03	BUY	unknown	相川佳之 AIKAWA YOSHIYUKI	unknown	989.8K	¥2,279	-	¥5M ($35K)
2023-10-03	BUY	negotiated	相川佳之 AIKAWA YOSHIYUKI	strategic	989.8K	¥2,279	-	¥3M ($22K)
2023-06-06	SELL	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	199.0K	¥1,622	-48.1%	¥53M ($340K)
2023-05-09	BUY	Market Buy	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	231.4K	¥1,571	+52.9%	¥364M ($2.3M)
2023-03-27	SELL	unknown	井上裕基 Inoue Hiroki	activist	473.5K	¥963	-149.4%	¥868K ($6K)
2023-03-27	SELL	unknown	株式会社M&M M&M Co., Ltd.	activist	301.5K	¥963	-149.4%	¥579K ($4K)
2022-07-07	SELL	unknown	ニッセイ・キャピタル株式会社 NISSAY CAPITAL CO.,LTD	other	0	¥907	-164.8%	¥142M ($915K)
2022-06-22	SELL	unknown	井上裕基 Inoue Hiroki	activist	473.5K	¥835	-187.7%	¥166M ($1.1M)
2022-06-22	SELL	unknown	ニッセイ・キャピタル株式会社 NISSAY CAPITAL CO.,LTD	other	156.3K	¥835	-187.7%	¥56M ($361K)

Showing the 50 most recent of 60 filings.

Frequently asked questions

Who has been buying Waqoo Inc. stock?: 8 distinct investors have filed 15 disclosed large-shareholding filings in Waqoo Inc. (4937), most recently on 2026-04-27. 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 Waqoo Inc. have?: Waqoo Inc. has 15 buy-side and 36 sell-side disclosures on record, covering ¥13.1B ($84.7M) in total reported value, spanning 2021-07-05 to 2026-04-27.
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.