Who has been buying Daiichi Kigenso Kagaku Kogyo Co., Ltd. stock?

6 distinct investors have filed 13 disclosed large-shareholding filings in Daiichi Kigenso Kagaku Kogyo Co., Ltd. (4082), most recently on 2026-03-23. 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 Daiichi Kigenso Kagaku Kogyo Co., Ltd. have?

Daiichi Kigenso Kagaku Kogyo Co., Ltd. has 13 buy-side and 9 sell-side disclosures on record, covering ¥6.9B ($44.8M) in total reported value, spanning 2021-04-05 to 2026-03-23.

Where does StockDrifts get Daiichi Kigenso Kagaku Kogyo Co., 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.

Daiichi Kigenso Kagaku Kogyo Co., Ltd. 4082

Company

第一稀元素化学工業株式会社Daiichi Kigenso Kagaku Kogyo Co., Ltd.

Investors

Buys

Total Value

¥6.9B ($44.8M)

Avg Return

+90.16%

Last Filing

2026-03-23

Daiichi Kigenso Kagaku Kogyo Co., Ltd. (4082) has 13 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥6.9B ($44.8M) in reported transaction value. The earliest filing StockDrifts holds for Daiichi Kigenso Kagaku Kogyo Co., Ltd. is dated 2021-04-05; the most recent is 2026-03-23. 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 +90.16%, 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
2026-03-23	BUY	Market Buy	アローストリート・キャピタル・リミテッド・パートナーシップ(Arrowstreet Capital, Limited Partnership) Arrowstreet Capital, Limited Partnership	passive	1.3M	¥2,300	+10.7%	¥3.0B ($19.3M)
2022-12-05	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	197.8K	¥1,149	+121.5%	¥78M ($506K)
2022-12-05	SELL	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	15.8K	¥1,149	-121.5%	¥22M ($145K)
2022-12-05	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	929.0K	¥1,149	+121.5%	¥1.1B ($6.8M)
2022-10-05	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	129.6K	¥1,288	-97.6%	¥35M ($223K)
2022-10-05	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	33.8K	¥1,288	+97.6%	¥44M ($281K)
2022-10-05	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.2M	¥1,288	+97.6%	¥1.6B ($10.2M)
2022-06-03	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	156.1K	¥1,105	+130.3%	¥127M ($818K)
2022-06-03	SELL	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	800	¥1,105	-130.3%	¥75M ($487K)
2022-06-03	SELL	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.6M	¥1,105	-130.3%	¥35M ($226K)
2021-07-07	SELL	unknown	國部克彦 Katsuhiko Kokubu	strategic	1.3M	¥1,764	-44.3%	¥435M ($2.8M)
2021-07-07	BUY	unknown	國部克彦 Katsuhiko Kokubu	strategic	1.3M	¥1,764	+44.3%	¥435M ($2.8M)
2021-07-06	SELL	unknown	國部克彦 Katsuhiko Kokubu	strategic	1.3M	¥1,789	-42.3%	¥441M ($2.8M)
2021-07-06	BUY	unknown	國部克彦 Katsuhiko Kokubu	strategic	1.3M	¥1,789	+42.3%	¥441M ($2.8M)
2021-07-05	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	42.2K	¥1,767	-44.0%	¥17M ($111K)
2021-07-05	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	68.8K	¥1,767	+44.0%	¥17M ($111K)
2021-07-05	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.6M	¥1,767	+44.0%	¥461M ($3.0M)
2021-06-03	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・エルエルシー J.P. Morgan Securities LLC	other	0	¥1,676	+51.9%	-
2021-06-03	SELL	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	50.5K	¥1,676	-51.9%	¥225M ($1.5M)
2021-06-03	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	59.5K	¥1,676	+51.9%	¥61M ($396K)
2021-06-03	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.4M	¥1,676	+51.9%	¥2.3B ($14.6M)
2021-05-07	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・エルエルシー J.P. Morgan Securities LLC	other	0	¥1,387	+83.5%	-
2021-05-07	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	186.0K	¥1,387	+83.5%	¥258M ($1.7M)
2021-05-07	SELL	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	22.7K	¥1,387	-83.5%	¥3M ($22K)
2021-05-07	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.4M	¥1,387	+83.5%	¥355M ($2.3M)
2021-04-05	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・エルエルシー J.P. Morgan Securities LLC	other	0	¥1,173.992	+116.8%	-
2021-04-05	BUY	Market Buy	ジェー・ピー・モルガン・セキュリティーズ・ピーエルシー J.P. Morgan Securities plc	other	185.4K	¥1,173.992	+116.8%	¥218M ($1.4M)
2021-04-05	BUY	Market Buy	JPモルガン証券株式会社 JPMorgan Securities Japan Co., Ltd.	other	24.6K	¥1,173.992	+116.8%	¥29M ($186K)
2021-04-05	BUY	Market Buy	JPモルガン・アセット・マネジメント株式会社 JPMorgan Asset Management (Japan) Limited	passive	1.1M	¥1,173.992	+116.8%	¥1.3B ($8.3M)

Frequently asked questions

Who has been buying Daiichi Kigenso Kagaku Kogyo Co., Ltd. stock?: 6 distinct investors have filed 13 disclosed large-shareholding filings in Daiichi Kigenso Kagaku Kogyo Co., Ltd. (4082), most recently on 2026-03-23. 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 Daiichi Kigenso Kagaku Kogyo Co., Ltd. have?: Daiichi Kigenso Kagaku Kogyo Co., Ltd. has 13 buy-side and 9 sell-side disclosures on record, covering ¥6.9B ($44.8M) in total reported value, spanning 2021-04-05 to 2026-03-23.
Where does StockDrifts get Daiichi Kigenso Kagaku Kogyo Co., 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 Daiichi Kigenso Kagaku Kogyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.