Who has been buying Taiyo Bussan Kaisha,Ltd. stock?

16 distinct investors have filed 32 disclosed large-shareholding filings in Taiyo Bussan Kaisha,Ltd. (9941), most recently on 2026-05-11. 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 Taiyo Bussan Kaisha,Ltd. have?

Taiyo Bussan Kaisha,Ltd. has 32 buy-side and 20 sell-side disclosures on record, covering ¥2.5B ($16.1M) in total reported value, spanning 2021-08-19 to 2026-05-11.

Where does StockDrifts get Taiyo Bussan Kaisha,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.

Taiyo Bussan Kaisha,Ltd. 9941

Company

太洋物産株式会社Taiyo Bussan Kaisha,Ltd.

Investors

Buys

Total Value

¥2.5B ($16.1M)

Avg Return

+3.97%

Last Filing

2026-05-11

Taiyo Bussan Kaisha,Ltd. (9941) has 32 disclosed large-shareholding filings and 20 disclosed disposals on record, filed by 16 distinct investors. Together those filings cover ¥2.5B ($16.1M) in reported transaction value. The earliest filing StockDrifts holds for Taiyo Bussan Kaisha,Ltd. is dated 2021-08-19; the most recent is 2026-05-11. 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 +3.97%, 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
2026-07-31	BUY	Market Buy	ケイレオブラザーズリミテッド(KAY LEO BROTHERS LIMITED) KAY LEO BROTHERS LIMITED	passive	1.0M	¥1,237	-2.8%	¥1.2B ($8.0M)
2026-07-15	BUY	Market Buy	エスクリプトエナジー株式会社代表取締役久永賢剛 S Crypto Energy Inc.	passive	250.0K	¥1,414	-13.7%	¥4M ($23K)
2026-07-08	BUY	Market Buy	エックスモバイル株式会社	activist	350.2K	¥1,446	-15.5%	¥506M ($3.3M)
2026-07-08	BUY	Market Buy	エックスモバイル株式会社	activist	350.2K	¥1,446	-15.5%	¥506M ($3.3M)
2026-07-08	BUY	Market Buy	木野将徳	activist	436.6K	¥1,446	-15.5%	¥28M ($183K)
2026-07-08	BUY	Market Buy	株式会社エビス商事 EBISUSHOJI CO.,LTD.	passive	318.1K	¥1,446	-15.5%	¥460M ($3.0M)
2026-07-08	BUY	Market Buy	木野将徳	activist	436.6K	¥1,446	-15.5%	¥28M ($183K)
2026-07-08	BUY	Market Buy	株式会社エビス商事 EBISUSHOJI CO.,LTD.	passive	318.1K	¥1,446	-15.5%	¥460M ($3.0M)
2026-07-07	BUY	private	ORCHID PLUS PTE. LTD.	passive	1.2M	¥1,508	-19.9%	¥897M ($5.8M)
2026-07-02	BUY	Market Buy	エスクリプトエナジー株式会社代表取締役久永賢剛 S Crypto Energy Inc.	passive	250.0K	¥1,431	-13.6%	¥358M ($2.3M)
2026-06-24	BUY	Market Buy	木野将徳 KINOMASANORI	passive	332.0K	¥1,190	+13.5%	¥26M ($165K)
2026-06-16	BUY	Market Buy	木野将徳 MASANORIKINO	passive	310.6K	¥1,203	+16.2%	¥27M ($177K)
2026-05-29	BUY	Market Buy	木野将徳 MASANORIKINO	passive	287.8K	¥1,175	+8.1%	¥35M ($229K)
2026-05-29	SELL	Market Buy	株式会社エビス商事 EBISUSHOJI Co.,Ltd.	passive	96.1K	¥1,175	-8.1%	¥47M ($303K)
2026-05-28	BUY	Market Buy	木野将徳 MASANORIKINO	passive	287.8K	¥1,152	+10.2%	¥35M ($224K)
2026-05-11	BUY	Market Buy	クリスタルスカイ有限会社	passive	111.2K	¥991	+5.5%	¥110M ($711K)
2026-05-11	BUY	Market Buy	木野将徳	passive	146.4K	¥991	+5.5%	¥33M ($211K)
2026-05-08	BUY	Market Buy	大森丈幸 OMORI TAKEYUKI	passive	195.0K	¥1,021	+2.5%	¥199M ($1.3M)
2026-05-08	SELL	Market Buy	大森丈幸 OMORI TAKEYUKI	passive	96.0K	¥1,021	-2.5%	¥141M ($908K)
2026-05-08	SELL	unknown	クリスタルスカイ有限会社	other	0	¥1,021	-2.5%	¥114M ($733K)
2026-05-08	SELL	unknown	クリスタルスカイ有限会社	other	0	¥1,021	-2.5%	¥114M ($733K)
2026-05-08	BUY	Market Buy	大森丈幸 OMORI TAKEYUKI	passive	233.9K	¥1,021	+2.5%	¥40M ($256K)
2026-05-08	BUY	Market Buy	木野将徳	passive	257.6K	¥1,021	+2.5%	¥114M ($733K)
2026-05-08	BUY	Market Buy	木野将徳	passive	257.6K	¥1,021	+2.5%	¥114M ($733K)
2026-05-07	BUY	Market Buy	クリスタルスカイ有限会社	passive	111.2K	¥1,084	-3.5%	¥121M ($778K)
2026-05-07	BUY	Market Buy	木野将徳	passive	113.4K	¥1,084	-3.5%	¥123M ($793K)
2026-05-07	BUY	Market Buy	クリスタルスカイ有限会社	passive	111.2K	¥1,084	-3.5%	¥121M ($778K)
2026-05-07	BUY	Market Buy	木野将徳	passive	146.4K	¥1,084	-3.5%	¥159M ($1.0M)
2025-06-17	SELL	Market Buy	株式会社BPMH BPMH Inc.	passive	411.4K	¥980	-19.1%	¥153M ($986K)
2025-06-17	BUY	Market Buy	ORCHID PLUS PTE. LTD.	passive	189.0K	¥980	+19.1%	¥185M ($1.2M)
2024-12-17	SELL	Market Buy	ソラ株式会社 SORA,inc.	passive	0	¥878	-32.9%	¥435M ($2.8M)
2024-12-17	BUY	Market Buy	株式会社BPMH BPMH Inc.	passive	600.4K	¥878	+32.9%	¥527M ($3.4M)
2023-09-01	BUY	Market Buy	ソラ株式会社 SORA,inc.	passive	600.4K	¥1,041	+12.1%	¥120M ($777K)
2022-10-25	BUY	unknown	桑畑夏美 Natsumi Kuwahata	other	222.4K	¥918	+27.1%	¥204M ($1.3M)
2022-10-25	BUY	unknown	株式会社エビス商事 EBISUSHOJI CO.,LTD.	strategic	136.1K	¥918	+27.1%	¥33M ($212K)
2022-10-25	BUY	unknown	桑畑夏美 Natsumi Kuwahata	other	222.4K	¥918	+27.1%	¥204M ($1.3M)
2022-09-29	BUY	unknown	湯浅商事株式会社 Yuasa Shoji Co., Ltd.	other	66.8K	¥913	+27.8%	¥61M ($393K)
2022-09-29	BUY	unknown	湯浅健右 Kensuke Yuasa	other	155.6K	¥913	+27.8%	¥142M ($917K)
2022-09-29	BUY	unknown	湯浅健右 Kensuke Yuasa	other	155.6K	¥913	+27.8%	¥142M ($917K)
2022-09-22	SELL	unknown	株式会社ティーアール商事 T.R. Shoji Co., Ltd.	other	0	¥1,078	-8.3%	¥54M ($348K)
2022-09-22	SELL	unknown	須田忠雄 Tadao Suda	other	0	¥1,078	-8.3%	¥87M ($560K)
2022-09-20	BUY	Market Buy	株式会社ティーアール商事 T.R. Shoji Co., Ltd.	other	50.0K	¥1,058	+10.3%	¥53M ($341K)
2022-09-20	SELL	Market Buy	須田忠雄 Tadao Suda	passive	80.4K	¥1,058	-10.3%	¥30M ($193K)
2022-09-15	SELL	Market Buy	須田忠雄 Tadao Suda	passive	108.6K	¥1,027	-13.6%	¥40M ($256K)
2022-09-15	SELL	Market Buy	株式会社ティーアール商事 T.R. Shoji Co., Ltd.	other	50.0K	¥1,027	-13.6%	¥11M ($68K)
2022-09-07	BUY	Market Buy	ソラ株式会社 SORA,inc.	passive	444.8K	¥863	+35.2%	¥384M ($2.5M)
2022-08-25	BUY	Market Buy	株式会社ティーアール商事 T.R. Shoji Co., Ltd.	other	50.0K	¥974	+19.8%	¥49M ($314K)
2022-08-25	SELL	Market Buy	須田忠雄 Tadao Suda	passive	121.9K	¥974	-19.8%	¥23M ($151K)
2022-06-14	SELL	unknown	太洋不動産株式会社 TAIYO FUDOUSAN	other	247.0K	¥1,046	-11.6%	¥7M ($46K)
2022-06-14	SELL	unknown	太洋不動産株式会社 TAIYO FUDOUSAN	other	125.3K	¥1,046	-11.6%	¥17M ($112K)

Showing the 50 most recent of 81 filings.

Frequently asked questions

Who has been buying Taiyo Bussan Kaisha,Ltd. stock?: 16 distinct investors have filed 32 disclosed large-shareholding filings in Taiyo Bussan Kaisha,Ltd. (9941), most recently on 2026-05-11. 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 Taiyo Bussan Kaisha,Ltd. have?: Taiyo Bussan Kaisha,Ltd. has 32 buy-side and 20 sell-side disclosures on record, covering ¥2.5B ($16.1M) in total reported value, spanning 2021-08-19 to 2026-05-11.
Where does StockDrifts get Taiyo Bussan Kaisha,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 Taiyo Bussan Kaisha,Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.