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

12 distinct investors have filed 32 disclosed large-shareholding filings in DKK Co., Ltd. (6706), most recently on 2026-05-12. 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 DKK Co., Ltd. have?

DKK Co., Ltd. has 32 buy-side and 41 sell-side disclosures on record, covering ¥6.5B ($41.9M) in total reported value, spanning 2021-04-07 to 2026-05-12.

Where does StockDrifts get DKK 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.

DKK Co., Ltd. 6706

Company

電気興業株式会社DKK Co., Ltd.

Investors

Buys

Total Value

¥6.5B ($41.9M)

Avg Return

+45.07%

Last Filing

2026-05-12

DKK Co., Ltd. (6706) has 32 disclosed large-shareholding filings and 41 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥6.5B ($41.9M) in reported transaction value. The earliest filing StockDrifts holds for DKK Co., Ltd. is dated 2021-04-07; the most recent is 2026-05-12. 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 +45.07%, 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
2026-08-14	BUY	Market Buy	fundnote株式会社 fundnote	activist	1.4M	¥3,450	+0.0%	¥352M ($2.3M)
2026-07-21	BUY	Market Buy	fundnote株式会社 fundnote	activist	1.3M	¥2,929	+17.8%	¥302M ($1.9M)
2026-06-19	BUY	Market Buy	fundnote株式会社 fundnote	activist	1.2M	¥3,175	-9.4%	¥330M ($2.1M)
2026-06-12	BUY	Market Buy	fundnote株式会社 fundnote	activist	1.1M	¥3,180	-3.1%	¥315M ($2.0M)
2026-05-25	BUY	Market Buy	fundnote株式会社 fundnote	activist	991.8K	¥3,470	-8.5%	¥344M ($2.2M)
2026-05-12	BUY	Market Buy	fundnote株式会社 fundnote	activist	892.8K	¥3,465	+0.0%	¥439M ($2.8M)
2026-05-11	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	1.3M	¥3,425	+1.2%	¥1.1B ($7.2M)
2026-02-20	BUY	unknown	fundnote株式会社 fundnote	activist	766.5K	¥3,040	+8.9%	¥379M ($2.4M)
2026-01-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	72.0K	¥2,745	-20.6%	¥238M ($1.5M)
2026-01-22	SELL	unknown	野村證券株式会社	other	113.8K	¥2,745	-20.6%	¥377M ($2.4M)
2026-01-22	BUY	unknown	fundnote株式会社 fundnote	activist	642.0K	¥2,745	+20.6%	¥1.8B ($11.4M)
2026-01-22	BUY	unknown	野村アセットマネジメント株式会社	other	228.3K	¥2,745	+20.6%	¥756M ($4.9M)
2025-11-10	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	250.3K	¥1,971	+67.9%	¥493M ($3.2M)
2025-11-10	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	172.9K	¥1,971	+67.9%	¥342M ($2.2M)
2025-11-10	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	220.3K	¥1,971	-67.9%	¥365M ($2.4M)
2025-10-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	250.9K	¥2,007	+64.9%	¥2M ($14K)
2025-10-06	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	297	¥2,007	-64.9%	¥446M ($2.9M)
2025-10-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	405.2K	¥2,007	+64.9%	¥431M ($2.8M)
2025-09-19	BUY	negotiated	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	117.4K	¥2,083	+58.9%	¥7M ($44K)
2025-09-19	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	192.1K	¥2,083	-58.9%	¥57M ($366K)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	310.0K	¥2,083	+58.9%	¥45M ($293K)
2025-07-23	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	249.4K	¥2,108	-57.0%	¥5M ($30K)
2025-07-23	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	222.8K	¥2,108	+57.0%	¥99M ($637K)
2025-07-23	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	190.4K	¥2,108	+57.0%	¥145M ($934K)
2025-06-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	122.5K	¥2,111	+56.8%	¥259M ($1.7M)
2025-06-20	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	252.2K	¥2,111	+56.8%	¥532M ($3.4M)
2025-06-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	175.3K	¥2,111	+56.8%	¥370M ($2.4M)
2025-04-03	BUY	Market Buy	オアシスマネジメントカンパニーリミテッド(Oasis Management Company Ltd.) Oasis Management Company Ltd.	activist	1.1M	¥1,741	+90.1%	¥414M ($2.7M)
2023-03-20	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	143.0K	¥2,245	-47.4%	¥84M ($543K)
2023-03-20	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	245.5K	¥2,245	-47.4%	¥57M ($368K)
2023-03-20	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	76.8K	¥2,245	-47.4%	¥416M ($2.7M)
2023-02-06	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	132.3K	¥1,912	-73.1%	¥90M ($582K)
2023-02-06	SELL	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	282.4K	¥1,912	-73.1%	¥53M ($343K)
2023-02-06	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	10.2K	¥1,912	-73.1%	¥76M ($493K)
2023-02-06	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	47.2K	¥1,912	-73.1%	¥39M ($254K)
2023-01-11	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	271.6K	¥1,935	+71.1%	¥526M ($3.4M)
2023-01-11	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	179.9K	¥1,935	+71.1%	¥348M ($2.2M)
2023-01-11	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	263.1K	¥1,935	+71.1%	¥509M ($3.3M)
2022-07-25	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	364.8K	¥2,516	-31.6%	¥287M ($1.9M)
2022-07-25	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	128.0K	¥2,516	+31.6%	¥35M ($229K)
2022-07-25	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	112.9K	¥2,516	-31.6%	¥120M ($777K)
2022-04-22	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	479.0K	¥2,373	-39.5%	¥30M ($194K)
2022-04-22	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	114.7K	¥2,373	-39.5%	¥20M ($129K)
2022-04-22	SELL	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	160.1K	¥2,373	-39.5%	¥398M ($2.6M)
2022-04-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	491.2K	¥2,331	-42.0%	¥72M ($466K)
2022-04-07	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	122.0K	¥2,331	-42.0%	¥732M ($4.7M)
2022-04-07	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	328.2K	¥2,331	+42.0%	¥765M ($4.9M)
2022-03-07	SELL	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	522.1K	¥2,308	-43.4%	¥23M ($147K)
2022-03-07	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	436.7K	¥2,308	+43.4%	¥406M ($2.6M)
2022-02-07	SELL	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	531.9K	¥2,312	-43.2%	¥3M ($21K)

Showing the 50 most recent of 87 filings.

Frequently asked questions

Who has been buying DKK Co., Ltd. stock?: 12 distinct investors have filed 32 disclosed large-shareholding filings in DKK Co., Ltd. (6706), most recently on 2026-05-12. 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 DKK Co., Ltd. have?: DKK Co., Ltd. has 32 buy-side and 41 sell-side disclosures on record, covering ¥6.5B ($41.9M) in total reported value, spanning 2021-04-07 to 2026-05-12.
Where does StockDrifts get DKK 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 DKK Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.