Who has been buying Nishikawa Keisoku Co., Ltd. stock?

7 distinct investors have filed 9 disclosed large-shareholding filings in Nishikawa Keisoku Co., Ltd. (7500), most recently on 2026-04-17. 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 Nishikawa Keisoku Co., Ltd. have?

Nishikawa Keisoku Co., Ltd. has 9 buy-side and 2 sell-side disclosures on record, covering ¥3.6B ($23.4M) in total reported value, spanning 2021-11-02 to 2026-04-17.

Where does StockDrifts get Nishikawa Keisoku 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.

Nishikawa Keisoku Co., Ltd. 7500

Company

西川計測株式会社Nishikawa Keisoku Co., Ltd.

Investors

Buys

Total Value

¥3.6B ($23.4M)

Avg Return

+68.49%

Last Filing

2026-04-17

Nishikawa Keisoku Co., Ltd. (7500) has 9 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥3.6B ($23.4M) in reported transaction value. The earliest filing StockDrifts holds for Nishikawa Keisoku Co., Ltd. is dated 2021-11-02; the most recent is 2026-04-17. 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 +68.49%, 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
2026-04-17	SELL	unknown	西川徹 TORU NISHIKAWA	unknown	100.1K	¥9,570	-0.8%	¥1.3B ($8.2M)
2026-04-16	BUY	negotiated	太平電業株式会社 TAIHEI DENGYO KAISHA,LTD.	strategic	213.3K	¥9,800	-1.5%	¥2.1B ($13.5M)
2025-09-29	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥11,010	-13.5%	¥900M ($5.8M)
2025-09-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	249.4K	¥11,010	-13.5%	¥185M ($1.2M)
2025-09-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥11,010	-13.5%	¥2.8B ($18.1M)
2025-09-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥11,010	-13.5%	¥2.8B ($17.9M)
2025-01-23	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥7,930	+20.1%	¥648M ($4.2M)
2025-01-23	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	232.7K	¥7,930	+20.1%	¥272M ($1.8M)
2025-01-23	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥7,930	+20.1%	¥2.0B ($13.1M)
2025-01-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥7,930	+20.1%	¥2.0B ($12.9M)
2023-01-16	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥4,915	+93.7%	¥1.2B ($8.0M)
2023-01-16	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥4,915	+93.7%	¥402M ($2.6M)
2023-01-16	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	198.3K	¥4,915	+93.7%	¥329M ($2.1M)
2023-01-16	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,915	+93.7%	¥1.3B ($8.1M)
2022-10-31	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥4,845	+96.5%	¥396M ($2.6M)
2022-10-31	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	131.4K	¥4,845	+96.5%	¥215M ($1.4M)
2022-10-31	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,845	+96.5%	¥1.2B ($8.0M)
2022-10-31	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥4,845	+96.5%	¥1.2B ($7.9M)
2022-09-12	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥4,790	+98.8%	¥1.2B ($7.8M)
2022-09-12	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥4,790	+98.8%	¥391M ($2.5M)
2022-09-12	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	87.1K	¥4,790	+98.8%	¥169M ($1.1M)
2022-09-12	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,790	+98.8%	¥1.2B ($7.9M)
2022-08-24	BUY	unknown	西川隆司 Takashi Nishikawa	other	156.3K	¥4,780	+99.2%	¥747M ($4.8M)
2022-08-24	BUY	unknown	西川隆司 Takashi Nishikawa	other	156.3K	¥4,780	+99.2%	¥166M ($1.1M)
2022-05-20	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥4,415	+115.6%	¥361M ($2.3M)
2022-05-20	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	52.0K	¥4,415	+115.6%	¥153M ($987K)
2022-05-20	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,415	+115.6%	¥1.1B ($7.3M)
2022-05-20	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥4,415	+115.6%	¥1.1B ($7.2M)
2022-01-18	BUY	Market Buy	株式会社エスアイエル SIL Co., Ltd.	passive	81.7K	¥4,730	+101.3%	¥386M ($2.5M)
2022-01-18	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	17.2K	¥4,730	+101.3%	¥49M ($314K)
2022-01-18	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,730	+101.3%	¥1.2B ($7.8M)
2022-01-18	SELL	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	251.9K	¥4,730	-101.3%	¥386M ($2.5M)
2021-11-29	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	6.8K	¥4,800	+98.3%	¥33M ($211K)
2021-11-29	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,800	+98.3%	¥1.2B ($7.9M)
2021-11-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	333.6K	¥4,800	+98.3%	¥1.6B ($10.3M)
2021-11-02	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	255.2K	¥4,630	+105.6%	¥162M ($1.0M)
2021-11-02	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	333.6K	¥4,630	+105.6%	¥1.5B ($10.0M)

Frequently asked questions

Who has been buying Nishikawa Keisoku Co., Ltd. stock?: 7 distinct investors have filed 9 disclosed large-shareholding filings in Nishikawa Keisoku Co., Ltd. (7500), most recently on 2026-04-17. 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 Nishikawa Keisoku Co., Ltd. have?: Nishikawa Keisoku Co., Ltd. has 9 buy-side and 2 sell-side disclosures on record, covering ¥3.6B ($23.4M) in total reported value, spanning 2021-11-02 to 2026-04-17.
Where does StockDrifts get Nishikawa Keisoku 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 Nishikawa Keisoku Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.