Who has been buying Yamatane Corporation stock?

6 distinct investors have filed 21 disclosed large-shareholding filings in Yamatane Corporation (9305), 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 Yamatane Corporation have?

Yamatane Corporation has 21 buy-side and 8 sell-side disclosures on record, covering ¥9.7B ($62.8M) in total reported value, spanning 2021-05-12 to 2026-04-07.

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.

Yamatane Corporation 9305

Company

株式会社ヤマタネYamatane Corporation

Investors

Buys

Total Value

¥9.7B ($62.8M)

Avg Return

+75.15%

Last Filing

2026-04-07

Yamatane Corporation (9305) has 21 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥9.7B ($62.8M) in reported transaction value. The earliest filing StockDrifts holds for Yamatane Corporation is dated 2021-05-12; the most recent is 2026-04-07. Across these filings the average return since disclosure is +75.15%, 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
2026-04-07	SELL	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	846.7K	¥2,188	+3.1%	¥789M ($5.1M)
2025-12-22	SELL	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	1.2M	¥2,369	+10.5%	¥1.0B ($6.6M)
2025-12-18	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	1.1M	¥2,338	-9.3%	¥2.7B ($17.1M)
2025-12-11	SELL	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	1.2M	¥2,350	+9.7%	¥1.0B ($6.5M)
2025-12-11	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	1.2M	¥2,350	-	¥1.0B ($6.5M)
2025-06-06	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	817.9K	¥2,346	-9.6%	¥35M ($223K)
2025-04-22	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	802.8K	¥2,252.5	-5.8%	¥263M ($1.7M)
2025-02-04	BUY	unknown	公益財団法人山種美術財団理事長田村妙子 Yamatane Art Foundation	strategic	933.0K	¥1,877.5	-	¥1.8B ($11.3M)
2025-02-04	BUY	unknown	公益財団法人山種美術財団理事長田村妙子 Yamatane Art Foundation	strategic	933.0K	¥1,877.5	+13.0%	¥1.8B ($11.3M)
2025-01-27	SELL	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	454.1K	¥1,817.5	-16.7%	¥208M ($1.3M)
2025-01-27	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,817.5	-	-
2025-01-10	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	686.2K	¥1,730	+22.6%	¥196M ($1.3M)
2024-12-13	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	568.7K	¥1,927.5	+10.0%	¥1.1B ($7.1M)
2024-12-13	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,927.5	-	-
2024-12-13	SELL	Market Buy	重田光時 Mitsutoki Shigeta	passive	0	¥1,927.5	-10.0%	¥1.1B ($7.1M)
2024-12-06	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,902.5	-	-
2024-12-06	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	0	¥1,902.5	-	-
2024-12-06	SELL	Market Buy	重田光時 Mitsutoki Shigeta	passive	568.7K	¥1,902.5	-11.5%	¥43M ($278K)
2024-10-22	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,607.5	-	-
2024-10-22	SELL	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	0	¥1,607.5	-31.9%	¥950M ($6.1M)
2024-10-22	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	591.4K	¥1,607.5	+31.9%	¥950M ($6.1M)
2024-10-10	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	591.4K	¥1,537.5	+38.0%	¥82M ($529K)
2024-10-10	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,537.5	-	-
2024-10-10	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	0	¥1,537.5	-	-
2024-08-27	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	537.3K	¥1,607.5	+31.9%	¥95M ($612K)
2024-08-27	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,607.5	+31.9%	-
2024-07-22	BUY	Market Buy	カナメ・キャピタル・エルピー(Kaname Capital,L.P.) Kaname Capital, L.P.	passive	572.7K	¥1,597.5	+32.8%	¥915M ($5.9M)
2024-02-26	SELL	Market Buy	重田光時 Mitsutoki Shigeta	passive	0	¥1,290.5	-64.3%	¥7M ($45K)
2024-02-26	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,290.5	-	-
2024-02-26	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	479.1K	¥1,290.5	+64.3%	¥618M ($4.0M)
2023-08-30	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	542.2K	¥1,000.5	+112.0%	¥536M ($3.5M)
2023-08-30	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥1,000.5	-	-
2023-08-08	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥916.5	-	-
2023-08-08	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	674.9K	¥916.5	+131.4%	¥611M ($3.9M)
2023-04-26	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	795.1K	¥844.5	+151.2%	¥664M ($4.3M)
2023-04-26	BUY	Market Buy	株式会社スノーボールキャピタル Snowball Capital Inc.	passive	30.1K	¥844.5	+151.2%	¥26M ($167K)
2021-12-15	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	910.8K	¥821.5	+158.2%	¥78M ($505K)
2021-12-15	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	passive	100	¥821.5	-	-
2021-10-11	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	815.4K	¥793	+167.5%	¥92M ($592K)
2021-10-11	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	passive	100	¥793	-	-
2021-07-15	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	700.5K	¥776.5	+173.2%	¥92M ($597K)
2021-07-15	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	passive	100	¥776.5	-	-
2021-05-12	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	580.8K	¥736.5	+188.0%	¥428M ($2.8M)
2021-05-12	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	passive	100	¥736.5	+188.0%	¥74K ($475)

Frequently asked questions

Who has been buying Yamatane Corporation stock?: 6 distinct investors have filed 21 disclosed large-shareholding filings in Yamatane Corporation (9305), 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 Yamatane Corporation have?: Yamatane Corporation has 21 buy-side and 8 sell-side disclosures on record, covering ¥9.7B ($62.8M) in total reported value, spanning 2021-05-12 to 2026-04-07.
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.