Who has been buying TACHI-S Co., Ltd. stock?

11 distinct investors have filed 19 disclosed large-shareholding filings in TACHI-S Co., Ltd. (7239), most recently on 2025-12-01. 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 TACHI-S Co., Ltd. have?

TACHI-S Co., Ltd. has 19 buy-side and 17 sell-side disclosures on record, covering ¥12.0B ($77.7M) in total reported value, spanning 2021-03-19 to 2025-12-01.

Where does StockDrifts get TACHI-S 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.

TACHI-S Co., Ltd. 7239

Company

株式会社タチエスTACHI-S Co., Ltd.

Investors

Buys

Total Value

¥12.0B ($77.7M)

Avg Return

+36.77%

Last Filing

2025-12-01

TACHI-S Co., Ltd. (7239) has 19 disclosed large-shareholding filings and 17 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥12.0B ($77.7M) in reported transaction value. The earliest filing StockDrifts holds for TACHI-S Co., Ltd. is dated 2021-03-19; the most recent is 2025-12-01. 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 +36.77%, 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
2026-06-01	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	6.3K	¥2,197	+2.1%	¥70M ($450K)
2026-06-01	SELL	unknown	三菱UFJ eスマート証券株式会社	other	32.6K	¥2,197	+2.1%	¥8M ($50K)
2026-06-01	SELL	Market Buy	三菱UFJアセットマネジメント株式会社	passive	340.3K	¥2,197	+2.1%	¥124M ($799K)
2026-06-01	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	1.1M	¥2,197	+2.1%	¥534M ($3.4M)
2025-12-01	BUY	Market Buy	三菱UFJモルガン・スタンレー証券株式会社	other	38.6K	¥2,026	+4.3%	¥82M ($526K)
2025-12-01	BUY	Market Buy	三菱UFJ eスマート証券株式会社	other	35.5K	¥2,026	+4.3%	¥75M ($484K)
2025-12-01	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	397.4K	¥2,026	+4.3%	¥840M ($5.4M)
2025-12-01	BUY	Market Buy	三菱UFJ信託銀行株式会社	passive	1.3M	¥2,026	+4.3%	¥2.7B ($17.7M)
2025-09-19	BUY	Market Buy	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	166.4K	¥2,012	+5.0%	¥335M ($2.2M)
2025-09-19	SELL	Market Buy	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	681.3K	¥2,012	-5.0%	¥163M ($1.1M)
2025-09-19	BUY	Market Buy	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.1M	¥2,012	+5.0%	¥241M ($1.6M)
2025-08-04	BUY	Market Buy	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	5.5M	¥1,810	+16.7%	¥10.0B ($64.4M)
2025-03-27	BUY	Market Buy	エーエージーエス・インベストメント・インク(AAGS Investment, Inc.) AAGS Investment, Inc.	passive	5.5M	¥1,814	+16.5%	¥10.0B ($64.5M)
2025-01-10	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.1M	¥1,729	-22.2%	¥104M ($668K)
2025-01-10	SELL	Market Buy	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	other	35.6K	¥1,729	-22.2%	¥6M ($39K)
2025-01-10	SELL	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	270.5K	¥1,729	-22.2%	¥524M ($3.4M)
2024-09-02	BUY	Market Buy	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	other	39.1K	¥1,967	+7.4%	¥77M ($496K)
2024-09-02	BUY	Market Buy	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	572.8K	¥1,967	+7.4%	¥1.1B ($7.3M)
2024-09-02	BUY	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.2M	¥1,967	+7.4%	¥2.3B ($14.6M)
2024-01-19	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	946.1K	¥1,936	+9.1%	¥1.8B ($11.8M)
2024-01-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	760.2K	¥1,936	+9.1%	¥1.5B ($9.5M)
2024-01-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	166.4K	¥1,936	+9.1%	¥322M ($2.1M)
2023-11-07	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	166.4K	¥1,654	+27.8%	¥275M ($1.8M)
2023-11-07	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	630.3K	¥1,654	-27.8%	¥17M ($113K)
2023-11-07	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	925.7K	¥1,654	-27.8%	¥163M ($1.1M)
2023-07-10	SELL	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	1.6M	¥1,555	-35.9%	¥586M ($3.8M)
2023-06-29	SELL	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.0M	¥1,538	-37.4%	¥569M ($3.7M)
2023-06-22	SELL	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.3M	¥1,504	-40.5%	¥583M ($3.8M)
2023-06-15	SELL	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.7M	¥1,503	-40.6%	¥561M ($3.6M)
2023-06-07	SELL	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	3.1M	¥1,477	-43.1%	¥625M ($4.0M)
2023-01-24	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	3.5M	¥1,173	+80.1%	¥182M ($1.2M)
2023-01-05	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	3.3M	¥1,103	+91.6%	¥505M ($3.3M)
2022-11-28	SELL	Market Buy	グランサム、マヨ、ヴァンオッテルローアンドカンパニーエルエルシー(Grantham, Mayo, Van Otterloo & Co. LLC) Grantham, Mayo, Van Otterloo & Co. LLC	activist	1.4M	¥1,131	-86.8%	¥403M ($2.6M)
2022-10-12	SELL	unknown	ブランデス・インベストメント・パートナーズ・エル・ピー(Brandes Investment Partners, L.P.) Brandes Investment Partners, L.P.	activist	1.5M	¥1,099	-92.3%	¥399M ($2.6M)
2022-09-22	SELL	unknown	ブランデス・インベストメント・パートナーズ・エル・ピー(Brandes Investment Partners, L.P.) Brandes Investment Partners, L.P.	activist	1.9M	¥1,188	-77.9%	¥461M ($3.0M)
2022-05-10	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.9M	¥1,026	+106.0%	¥3.0B ($19.1M)
2022-04-15	SELL	unknown	ブランデス・インベストメント・パートナーズ・エル・ピー(Brandes Investment Partners, L.P.) Brandes Investment Partners, L.P.	activist	2.3M	¥969	-118.1%	¥331M ($2.1M)
2022-03-22	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.9M	¥1,010	+109.2%	¥2.9B ($18.8M)
2021-12-21	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.9M	¥1,148	+84.1%	¥409M ($2.6M)
2021-12-03	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.5M	¥1,189	+77.7%	¥490M ($3.2M)
2021-11-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	642.1K	¥1,174	+80.0%	¥46M ($294K)
2021-11-19	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.0M	¥1,174	-80.0%	¥62M ($400K)
2021-11-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	166.4K	¥1,174	+80.0%	¥195M ($1.3M)
2021-04-13	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.1M	¥1,206	+75.2%	¥425M ($2.7M)
2021-03-19	BUY	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	166.4K	¥953.536	+121.6%	¥159M ($1.0M)
2021-03-19	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	603.3K	¥953.536	-121.6%	¥17M ($108K)
2021-03-19	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	1.1M	¥953.536	+121.6%	¥47M ($304K)

Frequently asked questions

Who has been buying TACHI-S Co., Ltd. stock?: 11 distinct investors have filed 19 disclosed large-shareholding filings in TACHI-S Co., Ltd. (7239), most recently on 2025-12-01. 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 TACHI-S Co., Ltd. have?: TACHI-S Co., Ltd. has 19 buy-side and 17 sell-side disclosures on record, covering ¥12.0B ($77.7M) in total reported value, spanning 2021-03-19 to 2025-12-01.
Where does StockDrifts get TACHI-S 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 TACHI-S Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.