Who has been buying Kyowakogyosyo Co.,Ltd. stock?

6 distinct investors have filed 6 disclosed large-shareholding filings in Kyowakogyosyo Co.,Ltd. (5971), most recently on 2026-03-31. 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 Kyowakogyosyo Co.,Ltd. have?

Kyowakogyosyo Co.,Ltd. has 6 buy-side and 5 sell-side disclosures on record, covering ¥1.9B ($12.5M) in total reported value, spanning 2023-06-07 to 2026-03-31.

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.

Kyowakogyosyo Co.,Ltd. 5971

Company

株式会社共和工業所Kyowakogyosyo Co.,Ltd.

Investors

Buys

Total Value

¥1.9B ($12.5M)

Avg Return

+19.20%

Last Filing

2026-03-31

Kyowakogyosyo Co.,Ltd. (5971) has 6 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.9B ($12.5M) in reported transaction value. The earliest filing StockDrifts holds for Kyowakogyosyo Co.,Ltd. is dated 2023-06-07; the most recent is 2026-03-31. Across these filings the average return since disclosure is +19.20%, 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
2026-09-03	BUY	unknown	オールド・ピーク・リミテッド Old Peak Limited	activist	0	¥8,250	-	-
2026-09-03	BUY	Market Buy	オールド・ピーク・グループ・リミテッド Old Peak Group Ltd.	activist	110.3K	¥8,250	+5.5%	¥113M ($731K)
2026-03-31	BUY	Market Buy	オールド・ピーク・グループ・リミテッド Old Peak Group Ltd.	activist	96.5K	¥7,800	+11.5%	¥106M ($684K)
2026-03-31	BUY	Market Buy	オールド・ピーク・リミテッド Old Peak Limited	activist	0	¥7,800	-	-
2025-11-10	BUY	Market Buy	オールド・ピーク・グループ・リミテッド Old Peak Group Ltd.	passive	82.9K	¥6,740	+29.1%	¥92M ($591K)
2025-11-10	BUY	Market Buy	オールド・ピーク・リミテッド Old Peak Limited	passive	0	¥6,740	-	-
2025-10-06	BUY	Market Buy	オールド・ピーク・グループ・リミテッド Old Peak Group Ltd.	passive	69.3K	¥7,100	+22.5%	¥492M ($3.2M)
2025-10-06	BUY	Market Buy	オールド・ピーク・リミテッド Old Peak Limited	passive	0	¥7,100	+22.5%	-
2024-02-29	BUY	unknown	共和工業所取引先持株会理事長櫻井透 SAKURAI TORU	strategic	112.4K	¥5,680	-	¥638M ($4.1M)
2024-02-29	BUY	unknown	共和工業所取引先持株会理事長櫻井透 SAKURAI TORU	strategic	112.4K	¥5,680	+53.2%	¥638M ($4.1M)
2024-02-29	SELL	unknown	共和工業所取引先持株会理事長小林俊介 KOBAYASHI SHUNSUKE	unknown	0	¥5,680	-53.2%	¥616M ($4.0M)
2024-02-29	BUY	unknown	共和工業所取引先持株会理事長小林俊介 KOBAYASHI SHUNSUKE	strategic	108.4K	¥5,680	+53.2%	¥616M ($4.0M)
2024-02-29	SELL	unknown	共和工業所取引先持株会理事長西登茂一 NISHI TOMOKAZU	unknown	0	¥5,680	-53.2%	¥596M ($3.8M)
2023-08-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	49.3K	¥4,090	-112.7%	¥95M ($614K)
2023-07-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	72.6K	¥4,020	-116.4%	¥71M ($459K)
2023-06-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	90.3K	¥4,095	-112.5%	¥67M ($435K)

Frequently asked questions

Who has been buying Kyowakogyosyo Co.,Ltd. stock?: 6 distinct investors have filed 6 disclosed large-shareholding filings in Kyowakogyosyo Co.,Ltd. (5971), most recently on 2026-03-31. 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 Kyowakogyosyo Co.,Ltd. have?: Kyowakogyosyo Co.,Ltd. has 6 buy-side and 5 sell-side disclosures on record, covering ¥1.9B ($12.5M) in total reported value, spanning 2023-06-07 to 2026-03-31.
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.