StockDrifts LogoStockDrifts

Sanki Engineering Co., Ltd. 1961

Company
三機工業株式会社Sanki Engineering Co., Ltd.
Investors
2
Buys
2
Total Value
¥20.5B ($132.2M)
Avg Return
+22.36%
Last Filing
2025-12-22

Sanki Engineering Co., Ltd. (1961) has 2 disclosed large-shareholding filings and 0 disclosed disposals on record, filed by 2 distinct investors. Together those filings cover ¥20.5B ($132.2M) in reported transaction value. The earliest filing StockDrifts holds for Sanki Engineering Co., Ltd. is dated 2025-12-22; the most recent is 2025-12-22. 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 +22.36%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-06-05BUYMarket Buy
キャピタル・リサーチ・アンド・マネージメント・カンパニー(Capital Research and Management Company)
Capital Research and Management Company
passive8.5M¥2,318+20.6%¥19.8B ($127.6M)
2025-12-22BUYMarket Buy
大樹生命保険株式会社
passive2.9M¥5,770+22.4%¥20.5B ($132.2M)
2025-12-22BUYMarket Buy
日本生命保険相互会社
passive2.2M¥5,770+22.4%¥15.2B ($98.1M)

Frequently asked questions

Who has been buying Sanki Engineering Co., Ltd. stock?
2 distinct investors have filed 2 disclosed large-shareholding filings in Sanki Engineering Co., Ltd. (1961), most recently on 2025-12-22. 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 Sanki Engineering Co., Ltd. have?
Sanki Engineering Co., Ltd. has 2 buy-side and 0 sell-side disclosures on record, covering ¥20.5B ($132.2M) in total reported value, spanning 2025-12-22 to 2025-12-22.
Where does StockDrifts get Sanki Engineering 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 Sanki Engineering Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.