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

13 distinct investors have filed 20 disclosed large-shareholding filings in Nikkiso Co., Ltd. (6376), most recently on 2026-04-07. 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 Nikkiso Co., Ltd. have?

Nikkiso Co., Ltd. has 20 buy-side and 11 sell-side disclosures on record, covering ¥11.0B ($71.2M) in total reported value, spanning 2021-07-21 to 2026-04-07.

Where does StockDrifts get Nikkiso 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.

Nikkiso Co., Ltd. 6376

Company

日機装株式会社Nikkiso Co., Ltd.

Investors

Buys

Total Value

¥11.0B ($71.2M)

Avg Return

+114.47%

Last Filing

2026-04-07

Nikkiso Co., Ltd. (6376) has 20 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥11.0B ($71.2M) in reported transaction value. The earliest filing StockDrifts holds for Nikkiso Co., Ltd. is dated 2021-07-21; the most recent is 2026-04-07. 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 +114.47%, 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
2026-06-15	SELL	Market Buy	三菱UFJ信託銀行株式会社	passive	882.1K	¥3,705	-0.3%	¥948M ($6.1M)
2026-06-15	SELL	unknown	三菱UFJモルガン・スタンレー証券株式会社	other	15.4K	¥3,705	-0.3%	¥1.7B ($10.9M)
2026-06-15	BUY	Market Buy	三菱UFJアセットマネジメント株式会社	passive	324.4K	¥3,705	+0.3%	¥1.2B ($7.8M)
2026-06-15	BUY	negotiated	株式会社三菱UFJ銀行	strategic	1.6M	¥3,705	+0.3%	¥6.0B ($38.8M)
2026-04-07	SELL	unknown	アセットマネジメントOne株式会社	other	859.2K	¥2,664	+1.1%	¥74M ($476K)
2026-04-07	BUY	unknown	みずほ証券株式会社	other	102.0K	¥2,664	-1.1%	¥272M ($1.8M)
2026-04-07	BUY	unknown	みずほ信託銀行株式会社	other	1.2M	¥2,664	-1.1%	¥3.1B ($20.1M)
2026-04-07	BUY	unknown	株式会社みずほ銀行	strategic	2.5M	¥2,664	-1.1%	¥6.7B ($43.0M)
2026-03-06	BUY	unknown	アセットマネジメントOne株式会社	other	883.9K	¥2,480	+6.0%	¥2.3B ($15.0M)
2026-03-06	BUY	unknown	みずほ証券株式会社	other	102.0K	¥2,480	+6.0%	¥268M ($1.7M)
2026-03-06	BUY	unknown	株式会社みずほ銀行	strategic	2.5M	¥2,480	+6.0%	¥6.6B ($42.4M)
2025-12-19	BUY	negotiated	アモーヴァ・アセットマネジメント株式会社	other	1.1M	¥1,583	+66.1%	¥2.8B ($18.3M)
2025-12-19	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	1.4M	¥1,583	-66.1%	¥3.7B ($23.6M)
2025-12-19	SELL	negotiated	三井住友信託銀行株式会社	strategic	60.8K	¥1,583	-66.1%	¥160M ($1.0M)
2025-11-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	923.7K	¥1,528	-72.0%	¥1.4B ($8.7M)
2025-11-21	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.5M	¥1,528	+72.0%	¥3.8B ($24.6M)
2025-09-30	BUY	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	472.2K	¥1,483	+77.3%	¥700M ($4.5M)
2025-09-30	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	323.1K	¥1,483	+77.3%	¥479M ($3.1M)
2025-09-30	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.1M	¥1,483	+77.3%	¥1.7B ($10.9M)
2025-09-30	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	1.6M	¥1,483	+77.3%	¥2.4B ($15.5M)
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	1.1M	¥1,467	+79.2%	¥507M ($3.3M)
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	1.5M	¥1,467	-79.2%	¥528M ($3.4M)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.0M	¥1,467	+79.2%	¥1.5B ($9.5M)
2024-07-05	SELL	Market Buy	ニッセイアセットマネジメント株式会社 Nissay Asset Management Company	other	568.8K	¥1,180	-122.8%	¥1.6B ($10.5M)
2024-07-05	BUY	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.8M	¥1,180	+122.8%	¥931M ($6.0M)
2024-07-05	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.5M	¥1,180	+122.8%	¥3.0B ($19.0M)
2024-07-05	BUY	Market Buy	日本生命保険相互会社 Nippon Life Insurance Company	passive	1.6M	¥1,180	+122.8%	¥139M ($895K)
2023-10-19	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	717.4K	¥934	+181.5%	¥670M ($4.3M)
2023-10-19	BUY	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	1.8M	¥934	+181.5%	¥1.7B ($10.9M)
2023-10-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.0M	¥934	+181.5%	¥934M ($6.0M)
2023-06-06	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	648.3K	¥883	+197.7%	¥24M ($158K)
2023-06-06	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	1.4M	¥883	-197.7%	¥385M ($2.5M)
2023-06-06	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.0M	¥883	-197.7%	¥269M ($1.7M)
2023-05-22	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	1.0M	¥918	-186.4%	¥635M ($4.1M)
2023-05-22	BUY	Market Buy	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	2.5M	¥918	+186.4%	¥152M ($983K)
2022-08-04	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	669.8K	¥838	-213.7%	¥218M ($1.4M)
2022-08-04	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	2.0M	¥838	-213.7%	¥542M ($3.5M)
2022-08-04	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.4M	¥838	+213.7%	¥1.2B ($7.6M)
2021-11-22	BUY	Market Buy	日本生命保険相互会社 Nippon Life Insurance Company	passive	1.6M	¥928	+183.3%	¥1.5B ($9.9M)
2021-11-22	BUY	Market Buy	ニッセイアセットマネジメント株式会社 Nissay Asset Management Company	other	2.1M	¥928	+183.3%	¥1.9B ($12.5M)
2021-07-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	927.9K	¥1,104	+138.1%	¥172M ($1.1M)
2021-07-21	BUY	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	2.7M	¥1,104	+138.1%	¥238M ($1.5M)
2021-07-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	1.4M	¥1,104	+138.1%	¥1.6B ($10.0M)

Frequently asked questions

Who has been buying Nikkiso Co., Ltd. stock?: 13 distinct investors have filed 20 disclosed large-shareholding filings in Nikkiso Co., Ltd. (6376), most recently on 2026-04-07. 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 Nikkiso Co., Ltd. have?: Nikkiso Co., Ltd. has 20 buy-side and 11 sell-side disclosures on record, covering ¥11.0B ($71.2M) in total reported value, spanning 2021-07-21 to 2026-04-07.
Where does StockDrifts get Nikkiso 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 Nikkiso Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.