Who has been buying Nippon Aqua Co., Ltd. stock?

8 distinct investors have filed 5 disclosed large-shareholding filings in Nippon Aqua Co., Ltd. (1429), most recently on 2026-04-03. 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 Nippon Aqua Co., Ltd. have?

Nippon Aqua Co., Ltd. has 5 buy-side and 9 sell-side disclosures on record, covering ¥1.1B ($7.0M) in total reported value, spanning 2021-05-18 to 2026-04-03.

Where does StockDrifts get Nippon Aqua 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.

Nippon Aqua Co., Ltd. 1429

Company

株式会社日本アクアNippon Aqua Co., Ltd.

Investors

Buys

Total Value

¥1.1B ($7.0M)

Avg Return

-1.88%

Last Filing

2026-04-03

Nippon Aqua Co., Ltd. (1429) has 5 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥1.1B ($7.0M) in reported transaction value. The earliest filing StockDrifts holds for Nippon Aqua Co., Ltd. is dated 2021-05-18; the most recent is 2026-04-03. 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 -1.88%, 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
2026-04-03	SELL	Market Buy	SBIアセットマネジメント株式会社	passive	1.0M	¥700	+1.1%	¥465M ($3.0M)
2026-04-03	BUY	Market Buy	株式会社SBI証券	other	163.8K	¥700	-1.1%	¥2M ($16K)
2026-01-09	SELL	Market Buy	株式会社SBI証券	other	159.9K	¥881	+20.0%	¥113M ($727K)
2026-01-09	SELL	Market Buy	SBIアセットマネジメント株式会社	passive	1.7M	¥881	+20.0%	¥1.2B ($7.7M)
2025-04-07	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	448.8K	¥672	+4.9%	¥12M ($75K)
2025-04-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	1.8M	¥672	+4.9%	¥248M ($1.6M)
2025-02-07	BUY	Market Buy	SBIアセットマネジメント株式会社 SBI Asset Management Co., Ltd.	passive	1.4M	¥775	-9.0%	¥1.1B ($7.0M)
2025-02-07	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	432.6K	¥775	-9.0%	¥335M ($2.2M)
2023-03-22	SELL	Market Buy	シュローダー・インベストメント・マネジメント株式会社 Schroder Investment Management(Japan)Limited	passive	1.4M	¥873	+19.2%	¥340M ($2.2M)
2022-12-23	SELL	unknown	中村文隆 Fumitaka Nakamura	activist	1.0M	¥836	+15.7%	¥840M ($5.4M)
2022-12-23	BUY	unknown	中村文隆 Fumitaka Nakamura	activist	1.0M	¥836	-15.7%	¥840M ($5.4M)
2022-12-23	BUY	unknown	中村文隆 Fumitaka Nakamura	activist	1.0M	¥836	-15.7%	¥840M ($5.4M)
2022-01-07	SELL	Market Buy	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.2M	¥634	-11.2%	¥57M ($370K)
2022-01-07	SELL	Market Buy	auカブコム証券株式会社 Mitsubishi UFJ Financial Group Inc.	other	1.0K	¥634	-11.2%	¥24M ($156K)
2022-01-07	SELL	Market Buy	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	258.8K	¥634	-11.2%	¥148M ($953K)
2021-05-18	SELL	Market Buy	ブイアイエス・アドバイザーズ・エルピー(VIS Advisors,LP) VIS Advisors,LP	passive	1.4M	¥540	-30.6%	¥188M ($1.2M)

Frequently asked questions

Who has been buying Nippon Aqua Co., Ltd. stock?: 8 distinct investors have filed 5 disclosed large-shareholding filings in Nippon Aqua Co., Ltd. (1429), most recently on 2026-04-03. 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 Nippon Aqua Co., Ltd. have?: Nippon Aqua Co., Ltd. has 5 buy-side and 9 sell-side disclosures on record, covering ¥1.1B ($7.0M) in total reported value, spanning 2021-05-18 to 2026-04-03.
Where does StockDrifts get Nippon Aqua 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 Nippon Aqua Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.