Who has been buying Yasunaga Corporation stock?

10 distinct investors have filed 11 disclosed large-shareholding filings in Yasunaga Corporation (7271), most recently on 2026-03-12. 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 Yasunaga Corporation have?

Yasunaga Corporation has 11 buy-side and 5 sell-side disclosures on record, covering ¥2.0B ($13.1M) in total reported value, spanning 2021-04-23 to 2026-03-12.

Where does StockDrifts get Yasunaga Corporation 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.

Yasunaga Corporation 7271

Company

株式会社安永Yasunaga Corporation

Investors

Buys

Total Value

¥2.0B ($13.1M)

Avg Return

+63.38%

Last Filing

2026-03-12

Yasunaga Corporation (7271) has 11 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥2.0B ($13.1M) in reported transaction value. The earliest filing StockDrifts holds for Yasunaga Corporation is dated 2021-04-23; the most recent is 2026-03-12. 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 +63.38%, 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
2026-03-12	SELL	negotiated	安永暁俊	other	0	¥1,012	-29.7%	-
2026-03-12	BUY	negotiated	株式会社KAYAS	activist	359.7K	¥1,012	+29.7%	¥472M ($3.0M)
2026-03-12	BUY	negotiated	安永由以	other	3.9K	¥1,012	-29.7%	¥5M ($33K)
2026-03-12	BUY	negotiated	有限会社YASNAG	activist	1.2M	¥1,012	-29.7%	¥1.5B ($9.8M)
2026-03-12	BUY	negotiated	株式会社KAYAS	activist	359.7K	¥1,012	+29.7%	¥472M ($3.0M)
2026-03-12	BUY	negotiated	安永由以	other	3.9K	¥1,012	-29.7%	¥5M ($33K)
2026-03-12	SELL	negotiated	安永暁俊	other	0	¥1,012	-29.7%	-
2026-03-12	BUY	negotiated	有限会社YASNAG	activist	1.2M	¥1,012	-29.7%	¥1.5B ($9.8M)
2025-10-02	SELL	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	3.5K	¥675	-94.5%	¥747M ($4.8M)
2025-10-02	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	16.0K	¥675	+94.5%	¥10M ($62K)
2024-05-27	BUY	negotiated	安永暁俊 Akitoshi Yasunaga	other	359.7K	¥615	+113.5%	¥221M ($1.4M)
2024-05-27	BUY	negotiated	有限会社YASNAG YUGENGAISHA YASNAG	activist	1.2M	¥615	+113.5%	¥708M ($4.6M)
2024-05-27	BUY	negotiated	安永由以 Yui Yasunaga	other	3.9K	¥615	+113.5%	¥2M ($15K)
2023-10-25	BUY	negotiated	安永由以 Yui Yasunaga	other	3.9K	¥733	+79.1%	¥3M ($18K)
2023-10-25	BUY	negotiated	安永暁俊 Akitoshi Yasunaga	other	359.7K	¥733	+79.1%	¥264M ($1.7M)
2023-10-25	BUY	negotiated	有限会社YASNAG YUGENGAISHA YASNAG	activist	1.2M	¥733	+79.1%	¥828M ($5.3M)
2023-10-03	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	1.7K	¥781	+68.1%	¥1M ($9K)
2023-10-03	BUY	unknown	モルガン・スタンレーMUFG証券株式会社 Morgan Stanley MUFG Securities Co., Ltd.	other	1.7M	¥781	+68.1%	¥1.3B ($8.5M)
2023-10-02	BUY	negotiated	安永暁俊 Akitoshi Yasunaga	other	359.7K	¥802	+63.7%	¥288M ($1.9M)
2023-10-02	BUY	negotiated	安永由以 Yui Yasunaga	other	3.9K	¥802	+63.7%	¥3M ($20K)
2023-10-02	BUY	negotiated	安永暁俊 Akitoshi Yasunaga	other	359.7K	¥802	+63.7%	¥288M ($1.9M)
2023-10-02	BUY	negotiated	安永由以 Yui Yasunaga	other	3.9K	¥802	+63.7%	¥3M ($20K)
2023-10-02	BUY	negotiated	有限会社YASNAG YUGENGAISHA YASNAG	activist	2.2M	¥802	+63.7%	¥1.7B ($11.1M)
2023-10-02	BUY	negotiated	有限会社YASNAG YUGENGAISHA YASNAG	activist	2.2M	¥802	+63.7%	¥1.7B ($11.1M)
2022-04-18	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	117.4K	¥735	-78.6%	¥136M ($877K)
2022-04-18	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	35.7K	¥735	+78.6%	¥951K ($6K)
2022-04-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	230.0K	¥735	+78.6%	¥169M ($1.1M)
2022-04-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	151.5K	¥735	-78.6%	¥2M ($12K)
2022-04-04	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	153.9K	¥809	+62.3%	¥125M ($803K)
2022-04-04	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	302.4K	¥809	+62.3%	¥245M ($1.6M)
2022-04-04	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	35.0K	¥809	+62.3%	¥28M ($183K)
2022-04-04	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	230.0K	¥809	+62.3%	¥186M ($1.2M)
2021-04-23	BUY	negotiated	安永由以 Yui Yasunaga	other	3.9K	¥1,233	+6.5%	¥5M ($31K)
2021-04-23	BUY	negotiated	有限会社YASNAG YUGENGAISHA YASNAG	activist	2.2M	¥1,233	+6.5%	¥2.7B ($17.1M)
2021-04-23	BUY	negotiated	安永暁俊 Akitoshi Yasunaga	other	359.7K	¥1,233	+6.5%	¥443M ($2.9M)

Frequently asked questions

Who has been buying Yasunaga Corporation stock?: 10 distinct investors have filed 11 disclosed large-shareholding filings in Yasunaga Corporation (7271), most recently on 2026-03-12. 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 Yasunaga Corporation have?: Yasunaga Corporation has 11 buy-side and 5 sell-side disclosures on record, covering ¥2.0B ($13.1M) in total reported value, spanning 2021-04-23 to 2026-03-12.
Where does StockDrifts get Yasunaga Corporation 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 Yasunaga Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.