Who has been buying Narasaki Sangyo Co., Ltd. stock?

6 distinct investors have filed 11 disclosed large-shareholding filings in Narasaki Sangyo Co., Ltd. (8085), most recently on 2026-04-22. 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 Narasaki Sangyo Co., Ltd. have?

Narasaki Sangyo Co., Ltd. has 11 buy-side and 4 sell-side disclosures on record, covering ¥7.5B ($48.3M) in total reported value, spanning 2023-01-23 to 2026-04-22.

Where does StockDrifts get Narasaki Sangyo 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.

Narasaki Sangyo Co., Ltd. 8085

Company

ナラサキ産業株式会社Narasaki Sangyo Co., Ltd.

Investors

Buys

Total Value

¥7.5B ($48.3M)

Avg Return

+50.47%

Last Filing

2026-04-22

Narasaki Sangyo Co., Ltd. (8085) has 11 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥7.5B ($48.3M) in reported transaction value. The earliest filing StockDrifts holds for Narasaki Sangyo Co., Ltd. is dated 2023-01-23; the most recent is 2026-04-22. 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 +50.47%, 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
2026-04-22	BUY	Market Buy	株式会社UH Partners 3	passive	233.5K	¥4,340	-7.0%	¥233M ($1.5M)
2026-04-22	BUY	Market Buy	株式会社UH Partners 2	passive	381.8K	¥4,340	-7.0%	¥1.7B ($10.7M)
2026-04-22	BUY	Market Buy	光通信株式会社	passive	380.3K	¥4,340	-7.0%	¥1.7B ($10.6M)
2026-03-02	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社	unknown	0	¥4,670	+6.5%	-
2026-03-02	SELL	negotiated	三菱UFJ信託銀行株式会社	strategic	196.3K	¥4,670	+6.5%	¥857M ($5.5M)
2026-02-24	BUY	Market Buy	株式会社UH Partners 3	passive	179.3K	¥4,205	+3.8%	¥783M ($5.0M)
2026-02-24	BUY	Market Buy	株式会社UH Partners 2	passive	381.8K	¥4,205	-3.8%	¥1.7B ($10.8M)
2026-02-24	BUY	Market Buy	光通信株式会社	passive	380.3K	¥4,205	-3.8%	¥1.7B ($10.7M)
2025-11-20	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	125.9K	¥3,600	+21.3%	¥194M ($1.2M)
2025-11-20	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	381.8K	¥3,600	+21.3%	¥1.4B ($8.9M)
2025-11-20	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥3,600	+21.3%	¥1.4B ($8.8M)
2025-09-26	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	71.8K	¥3,645	+19.8%	¥202M ($1.3M)
2025-09-26	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	381.8K	¥3,645	+19.8%	¥1.4B ($9.0M)
2025-09-26	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥3,645	+19.8%	¥1.4B ($8.9M)
2025-07-24	BUY	Market Buy	株式会社UH Partners 3 UH Partners 3 Co., Ltd.	passive	16.7K	¥3,305	+32.1%	¥55M ($356K)
2025-07-24	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	381.8K	¥3,305	+32.1%	¥123M ($795K)
2025-07-24	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥3,305	+32.1%	¥1.3B ($8.1M)
2025-02-07	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	344.7K	¥2,700	+61.7%	¥378M ($2.4M)
2025-02-07	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	20.9K	¥2,700	+61.7%	¥4.9B ($31.3M)
2025-02-07	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥2,700	+61.7%	¥1.0B ($6.6M)
2025-02-05	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	204.7K	¥2,682	+62.8%	¥457M ($2.9M)
2025-02-05	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥2,682	+62.8%	¥1.0B ($6.6M)
2024-01-19	BUY	Market Buy	株式会社UH Partners 2 UH Partners 2, Inc.	passive	34.0K	¥3,045	+43.4%	¥104M ($668K)
2024-01-19	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	380.3K	¥3,045	+43.4%	¥58M ($377K)
2023-06-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	290.0K	¥2,200	-98.4%	¥301M ($1.9M)
2023-05-29	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	361.0K	¥2,094	+108.5%	¥196M ($1.3M)
2023-02-07	SELL	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	427.3K	¥2,021	-116.0%	¥138M ($889K)
2023-01-23	BUY	Market Buy	光通信株式会社 Hikari Tsushin K.K.	passive	267.2K	¥1,775	+145.9%	¥474M ($3.1M)

Frequently asked questions

Who has been buying Narasaki Sangyo Co., Ltd. stock?: 6 distinct investors have filed 11 disclosed large-shareholding filings in Narasaki Sangyo Co., Ltd. (8085), most recently on 2026-04-22. 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 Narasaki Sangyo Co., Ltd. have?: Narasaki Sangyo Co., Ltd. has 11 buy-side and 4 sell-side disclosures on record, covering ¥7.5B ($48.3M) in total reported value, spanning 2023-01-23 to 2026-04-22.
Where does StockDrifts get Narasaki Sangyo 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 Narasaki Sangyo Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.