Who has been buying Tameny Inc. stock?

8 distinct investors have filed 10 disclosed large-shareholding filings in Tameny Inc. (6181), most recently on 2026-04-07. 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 Tameny Inc. have?

Tameny Inc. has 10 buy-side and 26 sell-side disclosures on record, covering ¥2.7B ($17.2M) in total reported value, spanning 2021-03-22 to 2026-04-07.

Where does StockDrifts get Tameny 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.

Tameny Inc. 6181

Company

タメニー株式会社(旧社名株式会社パートナーエージェント)Tameny Inc.

Investors

Buys

Total Value

¥2.7B ($17.2M)

Avg Return

-26.35%

Last Filing

2026-04-07

Tameny Inc. (6181) has 10 disclosed large-shareholding filings and 26 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥2.7B ($17.2M) in reported transaction value. The earliest filing StockDrifts holds for Tameny Inc. is dated 2021-03-22; the most recent is 2026-04-07. 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 -26.35%, 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
2026-07-02	SELL	Market Buy	佐藤茂 Shigeru Sato	passive	2.3M	¥79	+1.3%	¥37M ($241K)
2026-05-25	SELL	Market Buy	佐藤茂 Shigeru Sato	passive	2.8M	¥80	+10.0%	¥38M ($246K)
2026-04-07	SELL	Market Buy	佐藤茂 Shigeru Sato	passive	3.2M	¥102	+8.8%	¥132M ($852K)
2026-03-30	BUY	private	AIフュージョンキャピタルグループ株式会社 AI FUSION CAPITAL GROUP CORP.	strategic	18.0M	¥105	-9.5%	¥1.1B ($7.3M)
2026-03-23	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	145.6K	¥101	-1.0%	¥267M ($1.7M)
2026-02-26	BUY	Market Buy	佐藤茂 Shigeru Sato	passive	3.2M	¥108	-5.6%	¥350M ($2.3M)
2026-02-26	BUY	Market Buy	佐藤茂 Shigeru Sato	passive	3.2M	¥108	-5.6%	¥88M ($571K)
2026-02-26	BUY	Market Buy	佐藤茂 Shigeru Sato	passive	3.2M	¥108	-5.6%	¥350M ($2.3M)
2026-02-26	SELL	Market Buy	佐藤茂 Shigeru Sato	passive	3.2M	¥108	+5.6%	¥88M ($571K)
2026-02-19	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	2.8M	¥122	-16.4%	¥340M ($2.2M)
2026-01-30	BUY	unknown	株式会社フォーシスアンドカンパニー Foursis&Co	strategic	1.6M	¥122	-16.4%	¥195M ($1.3M)
2025-08-28	BUY	unknown	AIフュージョンキャピタルグループ株式会社 AI FUSION CAPITAL GROUP CORP.	strategic	5.1M	¥130	-21.5%	¥668M ($4.3M)
2025-04-22	BUY	negotiated	株式会社IBJ IBJ,Inc.	activist	4.0M	¥131	-22.1%	¥520M ($3.4M)
2025-04-22	BUY	Market Buy	株式会社IBJ IBJ,Inc.	activist	4.0M	¥131	-22.1%	¥183M ($1.2M)
2025-03-27	BUY	Market Buy	株式会社IBJ IBJ,Inc.	passive	4.0M	¥163	-37.4%	¥228M ($1.5M)
2025-03-25	BUY	Market Buy	株式会社IBJ IBJ,Inc.	passive	2.6M	¥166	-38.5%	¥208M ($1.3M)
2025-03-17	BUY	Market Buy	株式会社IBJ IBJ,Inc.	passive	1.3M	¥152	-32.9%	¥200M ($1.3M)
2024-02-22	SELL	unknown	佐藤茂 Shigeru Sato	other	3.3M	¥106	+3.8%	¥254M ($1.6M)
2023-04-14	BUY	acquisition	株式会社TMSホールディングス TMS holdings Inc.	strategic	1.8M	¥157	-35.0%	¥283M ($1.8M)
2023-04-14	BUY	unknown	株式会社TMSホールディングス代表取締役社長吉末育宏 TMS holdings Inc.	strategic	1.8M	¥157	-35.0%	¥283M ($1.8M)
2021-09-14	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥118	-13.6%	-
2021-09-14	SELL	private	エボファンド Evo Fund	activist	1.1M	¥118	+13.6%	¥187K ($1K)
2021-09-09	SELL	private	エボファンド Evo Fund	activist	1.2M	¥111	+8.1%	¥252K ($2K)
2021-09-09	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥111	-8.1%	-
2021-09-02	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥110	-7.3%	-
2021-09-02	SELL	private	エボファンド Evo Fund	activist	1.5M	¥110	+7.3%	¥253K ($2K)
2021-08-30	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥111	-8.1%	-
2021-08-30	SELL	private	エボファンド Evo Fund	activist	1.7M	¥111	+8.1%	¥80K ($514)
2021-08-27	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥108	-5.6%	-
2021-08-27	SELL	private	エボファンド Evo Fund	activist	1.8M	¥108	+5.6%	¥227K ($1K)
2021-08-23	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥102	+0.0%	-
2021-08-23	SELL	private	エボファンド Evo Fund	activist	2.0M	¥102	+0.0%	¥258K ($2K)
2021-08-17	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥116	-12.1%	-
2021-08-17	SELL	private	エボファンド Evo Fund	activist	2.3M	¥116	+12.1%	¥293K ($2K)
2021-08-13	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥122	-16.4%	-
2021-08-13	SELL	private	エボファンド Evo Fund	activist	2.6M	¥122	+16.4%	¥307K ($2K)
2021-08-03	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥122	-16.4%	-
2021-08-03	SELL	private	エボファンド Evo Fund	activist	2.8M	¥122	+16.4%	¥434K ($3K)
2021-07-28	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥123	-17.1%	-
2021-07-28	SELL	private	エボファンド Evo Fund	activist	3.2M	¥123	+17.1%	¥228K ($1K)
2021-07-21	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥122	-16.4%	-
2021-07-21	SELL	private	エボファンド Evo Fund	activist	3.5M	¥122	+16.4%	¥255K ($2K)
2021-07-13	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥122	-16.4%	-
2021-07-13	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥122	-16.4%	-
2021-07-13	SELL	private	エボファンド Evo Fund	activist	3.7M	¥122	+16.4%	¥228K ($1K)
2021-07-13	SELL	private	エボファンド Evo Fund	activist	3.7M	¥122	+16.4%	¥230K ($1K)
2021-06-17	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥139	-26.6%	-
2021-06-17	SELL	private	エボファンド Evo Fund	activist	3.9M	¥139	+26.6%	¥441K ($3K)
2021-06-16	BUY	private	EVOLUTION JAPANアセットマネジメント株式会社(Evolution Japan Asset Management Co. EVOLUTION JAPAN Asset Management Co., Ltd.	passive	0	¥137	-25.6%	-
2021-06-16	SELL	private	エボファンド Evo Fund	activist	4.3M	¥137	+25.6%	¥502K ($3K)

Showing the 50 most recent of 66 filings.

Frequently asked questions

Who has been buying Tameny Inc. stock?: 8 distinct investors have filed 10 disclosed large-shareholding filings in Tameny Inc. (6181), most recently on 2026-04-07. 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 Tameny Inc. have?: Tameny Inc. has 10 buy-side and 26 sell-side disclosures on record, covering ¥2.7B ($17.2M) in total reported value, spanning 2021-03-22 to 2026-04-07.
Where does StockDrifts get Tameny 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 Tameny Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.