Who has been buying Nitto Kogyo Corporation stock?

8 distinct investors have filed 6 disclosed large-shareholding filings in Nitto Kogyo Corporation (6651), 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 Nitto Kogyo Corporation have?

Nitto Kogyo Corporation has 6 buy-side and 3 sell-side disclosures on record, covering ¥14.3B ($92.1M) in total reported value, spanning 2021-07-14 to 2026-05-11.

Where does StockDrifts get Nitto Kogyo Corporation 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.

Nitto Kogyo Corporation 6651

Company

日東工業株式会社Nitto Kogyo Corporation

Investors

Buys

Total Value

¥14.3B ($92.1M)

Avg Return

+110.55%

Last Filing

2026-05-11

Nitto Kogyo Corporation (6651) has 6 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥14.3B ($92.1M) in reported transaction value. The earliest filing StockDrifts holds for Nitto Kogyo Corporation is dated 2021-07-14; 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 +110.55%, 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
2026-05-11	BUY	unknown	有限会社横山不動産	other	515.3K	¥4,910	-4.7%	¥2.5B ($16.3M)
2026-05-11	BUY	unknown	有限会社伸和興産	other	1.1M	¥4,910	-4.7%	¥5.2B ($33.3M)
2026-05-11	BUY	Market Buy	名東興産株式会社	other	6.9M	¥4,910	-4.7%	¥2.0B ($12.9M)
2026-05-11	BUY	unknown	有限会社横山不動産代表取締役加藤千惠子	other	515.3K	¥4,910	-4.7%	¥2.5B ($16.3M)
2026-05-11	BUY	unknown	有限会社伸和興産代表取締役加藤千惠子	other	1.1M	¥4,910	-4.7%	¥5.2B ($33.3M)
2026-05-11	BUY	Market Buy	名東興産株式会社代表取締役加藤千惠子	other	6.9M	¥4,910	-4.7%	¥2.0B ($12.9M)
2023-07-06	SELL	unknown	日東工業取引先持株会理事長舩橋茂行 NITTO KOGYO CORPORATION Business Partners Shareholding Association Chairman of the Board Shigeyuki Funabashi	other	0	¥3,565	-22.0%	¥7.2B ($46.5M)
2023-07-06	BUY	unknown	日東工業取引先持株会理事長市原正樹 NITTO KOGYO CORPORATION Business Partners Shareholding Association Chairman of the Board Masaki Ichihara	strategic	2.3M	¥3,565	+22.0%	¥8.1B ($52.1M)
2023-07-06	BUY	unknown	日東工業取引先持株会理事長舩橋茂行 NITTO KOGYO CORPORATION Business Partners Shareholding Association Chairman of the Board Shigeyuki Funabashi	other	0	¥3,565	+22.0%	¥7.2B ($46.5M)
2023-07-06	BUY	unknown	日東工業取引先持株会理事長市原正樹 NITTO KOGYO CORPORATION Business Partners Shareholding Association Chairman of the Board Masaki Ichihara	strategic	2.3M	¥3,565	+22.0%	¥8.1B ($52.1M)
2022-02-22	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	713.4K	¥1,584	+174.6%	¥20M ($132K)
2022-02-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	102.7K	¥1,584	+174.6%	¥148M ($958K)
2022-02-22	SELL	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	unknown	0	¥1,584	-174.6%	¥16M ($102K)
2021-12-07	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	702.1K	¥1,644	-164.6%	¥459M ($3.0M)
2021-12-07	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	strategic	944.7K	¥1,644	+164.6%	¥49M ($319K)
2021-12-07	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.0M	¥1,644	+164.6%	¥1.6B ($10.6M)
2021-07-14	BUY	unknown	日東工業取引先持株会理事長舩橋茂行 Shigeyuki Funabashi	strategic	2.2M	¥1,918	+126.8%	¥4.1B ($26.6M)

Frequently asked questions

Who has been buying Nitto Kogyo Corporation stock?: 8 distinct investors have filed 6 disclosed large-shareholding filings in Nitto Kogyo Corporation (6651), 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 Nitto Kogyo Corporation have?: Nitto Kogyo Corporation has 6 buy-side and 3 sell-side disclosures on record, covering ¥14.3B ($92.1M) in total reported value, spanning 2021-07-14 to 2026-05-11.
Where does StockDrifts get Nitto Kogyo Corporation 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 Nitto Kogyo Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.