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Nihon Seimitsu Co., Ltd. 7771

Company
日本精密株式会社Nihon Seimitsu Co., Ltd.
Investors
3
Buys
3
Total Value
¥1.2B ($7.9M)
Avg Return
+271.73%
Last Filing
2026-03-13

Nihon Seimitsu Co., Ltd. (7771) has 3 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥1.2B ($7.9M) in reported transaction value. The earliest filing StockDrifts holds for Nihon Seimitsu Co., Ltd. is dated 2023-08-24; the most recent is 2026-03-13. 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 +271.73%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-03-13BUYMarket Buy
KWON KYOUNGHOON
passive1.9M¥418+0.7%¥812M ($5.2M)
2026-03-13BUYMarket Buy
KWON KYOUNGHOON
passive1.9M¥418+0.7%¥812M ($5.2M)
2023-09-11BUYMarket Buy
株式会社 キュロホールディングス
CUROHOLDINGS Co.,Ltd.
activist2.5M¥83+407.2%¥210M ($1.4M)
2023-08-24BUYMarket Buy
Kib plug energy Co.,Ltd.
activist2.5M¥83+407.2%¥210M ($1.4M)
2023-08-24BUYMarket Buy
Kib plug energy Co.,Ltd.
activist2.5M¥83+407.2%¥210M ($1.4M)
2023-08-24BUYMarket Buy
Kib plug energy Co.,Ltd.
activist2.5M¥83+407.2%¥210M ($1.4M)

Frequently asked questions

Who has been buying Nihon Seimitsu Co., Ltd. stock?
3 distinct investors have filed 3 disclosed large-shareholding filings in Nihon Seimitsu Co., Ltd. (7771), most recently on 2026-03-13. 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 Nihon Seimitsu Co., Ltd. have?
Nihon Seimitsu Co., Ltd. has 3 buy-side and 0 sell-side disclosures on record, covering ¥1.2B ($7.9M) in total reported value, spanning 2023-08-24 to 2026-03-13.
Where does StockDrifts get Nihon Seimitsu 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 Nihon Seimitsu Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.