Who has been buying Yamada Holdings Co., Ltd. stock?

15 distinct investors have filed 8 disclosed large-shareholding filings in Yamada Holdings Co., Ltd. (9831), most recently on 2026-01-26. 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 Yamada Holdings Co., Ltd. have?

Yamada Holdings Co., Ltd. has 8 buy-side and 10 sell-side disclosures on record, covering ¥22.3B ($143.6M) in total reported value, spanning 2021-12-06 to 2026-01-26.

Where does StockDrifts get Yamada Holdings Co., Ltd. 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.

Yamada Holdings Co., Ltd. 9831

Company

株式会社ヤマダホールディングスYamada Holdings Co., Ltd.

Investors

Buys

Total Value

¥22.3B ($143.6M)

Avg Return

+26.01%

Last Filing

2026-01-26

Yamada Holdings Co., Ltd. (9831) has 8 disclosed large-shareholding filings and 10 disclosed disposals on record, filed by 15 distinct investors. Together those filings cover ¥22.3B ($143.6M) in reported transaction value. The earliest filing StockDrifts holds for Yamada Holdings Co., Ltd. is dated 2021-12-06; the most recent is 2026-01-26. 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 +26.01%, 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
2026-07-28	BUY	unknown	株式会社C&I Holdings	activist	11.2M	¥739.3	-6.3%	¥8.3B ($53.5M)
2026-07-28	BUY	unknown	株式会社シティインデックスフィフス	activist	16.6M	¥739.3	-6.3%	¥12.3B ($79.0M)
2026-07-28	BUY	unknown	株式会社Mホールディングス	activist	644.2K	¥739.3	-6.3%	¥476M ($3.1M)
2026-07-28	BUY	unknown	野村絢	activist	32.1M	¥739.3	-6.3%	¥23.8B ($153.2M)
2026-07-28	BUY	unknown	株式会社シティインデックスイレブンス	activist	100	¥739.3	-6.3%	¥74K ($477)
2026-07-21	BUY	acquisition	株式会社シティインデックスフィフス	activist	16.6M	¥728.1	-4.8%	¥12.1B ($77.8M)
2026-07-21	BUY	unknown	株式会社Mホールディングス	activist	644.2K	¥728.1	-4.8%	¥469M ($3.0M)
2026-07-21	BUY	acquisition	野村絢	activist	32.1M	¥728.1	-4.8%	¥23.4B ($150.9M)
2026-07-21	BUY	unknown	株式会社シティインデックスイレブンス	activist	100	¥728.1	-4.8%	¥73K ($470)
2026-01-26	SELL	unknown	山田昇	other	25.1M	¥548.2	+2.5%	¥13.4B ($86.7M)
2026-01-26	BUY	unknown	株式会社テックプランニング	other	65.3M	¥548.2	+2.5%	¥34.9B ($225.4M)
2026-01-26	SELL	unknown	山田惠美子	other	0	¥548.2	+2.5%	-
2024-07-16	BUY	unknown	山田惠美子 Emiko Yamada	other	3.6M	¥441.9	+21.0%	¥1.6B ($10.4M)
2024-07-16	BUY	unknown	山田昇 Noboru Yamada	other	31.6M	¥441.9	+21.0%	¥2.9B ($19.0M)
2024-07-16	BUY	Market Buy	山田昇 Noboru Yamada	other	24.9M	¥441.9	+21.0%	¥11.0B ($71.0M)
2024-07-16	BUY	Market Buy	山田昇 Noboru Yamada	other	24.9M	¥441.9	+21.0%	¥11.0B ($70.9M)
2024-07-16	BUY	Market Buy	山田昇 Noboru Yamada	other	24.9M	¥441.9	+21.0%	¥4.9B ($31.4M)
2024-07-16	BUY	Market Buy	株式会社テックプランニング Tecc Planning Co.,Ltd.	other	49.1M	¥441.9	+21.0%	¥982M ($6.3M)
2024-07-16	BUY	Market Buy	株式会社テックプランニング Tecc Planning Co.,Ltd.	other	62.9M	¥441.9	+21.0%	¥6.1B ($39.4M)
2024-07-16	BUY	Market Buy	株式会社テックプランニング Tecc Planning Co.,Ltd.	other	65.3M	¥441.9	+21.0%	¥1.1B ($6.9M)
2024-07-16	BUY	unknown	株式会社テックプランニング Tecc Planning Co.,Ltd.	other	65.3M	¥441.9	+21.0%	¥28.9B ($186.2M)
2021-12-06	SELL	Market Buy	ブラックロック・アセット・マネジメント・カナダ・リミテッド BlackRock Asset Management Canada Limited	passive	767.8K	¥398	-34.4%	¥192M ($1.2M)
2021-12-06	SELL	Market Buy	ブラックロック・インベストメント・マネジメント(ユーケー)リミテッドLimited) BlackRock Investment Management (UK	passive	1.0M	¥398	-34.4%	¥2.2B ($14.1M)
2021-12-06	SELL	Market Buy	ブラックロック・インスティテューショナル・トラスト・カンパニー、エヌ.エイ.(BlackRock Institutional Trust Company BlackRock Institutional Trust Company, N.A.	passive	11.8M	¥398	-34.4%	¥3.1B ($20.1M)
2021-12-06	SELL	Market Buy	ブラックロック・ファンド・アドバイザーズ BlackRock Fund Advisors	passive	7.5M	¥398	-34.4%	¥5.2B ($33.8M)
2021-12-06	SELL	Market Buy	ブラックロック・アセット・マネジメント・アイルランド・リミテッド BlackRock Asset Management Ireland Limited	passive	986.6K	¥398	-34.4%	¥1.4B ($9.2M)
2021-12-06	BUY	Market Buy	ブラックロック・インベストメント・マネジメント・エルエルシー BlackRock Investment Management LLC	passive	227.8K	¥398	+34.4%	¥7.3B ($46.9M)
2021-12-06	BUY	Market Buy	ブラックロック・フィナンシャル・マネジメント・インク(BlackRock Financial Management BlackRock Financial Management, Inc.	passive	1.8M	¥398	+34.4%	¥192M ($1.2M)
2021-12-06	SELL	Market Buy	ブラックロック・アドバイザーズ・エルエルシー(BlackRock Advisers BlackRock Advisers, LLC	passive	627.9K	¥398	-34.4%	¥192M ($1.2M)
2021-12-06	SELL	Market Buy	ブラックロック・ライフ・リミテッド BlackRock Life Limited	passive	460.3K	¥398	-34.4%	¥269M ($1.7M)
2021-12-06	SELL	Market Buy	ブラックロック・ファンド・マネジャーズ・リミテッド BlackRock Fund Managers Limited	passive	1.5M	¥398	-34.4%	¥154M ($993K)
2021-12-06	BUY	Market Buy	ブラックロック(ネザーランド)BVBV) BlackRock (Netherlands	passive	1.9M	¥398	+34.4%	¥745M ($4.8M)
2021-12-06	BUY	Market Buy	ブラックロック・ジャパン株式会社 BlackRock Japan Co., Ltd.	passive	8.5M	¥398	+34.4%	¥539M ($3.5M)

Frequently asked questions

Who has been buying Yamada Holdings Co., Ltd. stock?: 15 distinct investors have filed 8 disclosed large-shareholding filings in Yamada Holdings Co., Ltd. (9831), most recently on 2026-01-26. 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 Yamada Holdings Co., Ltd. have?: Yamada Holdings Co., Ltd. has 8 buy-side and 10 sell-side disclosures on record, covering ¥22.3B ($143.6M) in total reported value, spanning 2021-12-06 to 2026-01-26.
Where does StockDrifts get Yamada Holdings Co., Ltd. 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 Yamada Holdings Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.