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Mitsuchi Corporation 3439

Company
株式会社三ツ知Mitsuchi Corporation
Investors
4
Buys
4
Total Value
¥576M ($3.7M)
Avg Return
-29.79%
Last Filing
2026-03-18

Mitsuchi Corporation (3439) has 4 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥576M ($3.7M) in reported transaction value. The earliest filing StockDrifts holds for Mitsuchi Corporation is dated 2021-06-10; the most recent is 2026-03-18. 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 -29.79%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-03-18SELLunknown
野田 正英
NODA MASAE
strategic155.2K¥639-22.1%¥77M ($494K)
2025-05-15BUYunknown
アイシンシロキ株式会社
AISIN SHIROKI CORPORATION
unknown0¥613+27.2%¥245M ($1.6M)
2025-05-15SELLunknown
アイシンシロキ株式会社
AISIN SHIROKI CORPORATION
unknown0¥613-27.2%¥245M ($1.6M)
2025-03-10SELLunknown
野田 正英
NODA MASAE
strategic275.2K¥636-22.6%¥57M ($366K)
2025-03-10BUYunknown
野田 正英
NODA MASAE
strategic275.2K¥636+22.6%¥57M ($366K)
2024-06-21SELLunknown
箕浦 幹彦 (相続人代表 箕浦 智康)
MIKIHIKO MINOURA
other0¥800+2.5%¥598M ($3.9M)
2024-02-28SELLunknown
株式会社三ツ知
NODA MASAE
strategic364.3K¥820+4.9%¥56M ($362K)
2024-02-28BUYunknown
野田 正英
NODA MASAE
strategic364.3K¥820-4.9%¥56M ($359K)
2023-12-13SELLunknown
野田 正英
NODA MASAE
strategic432.5K¥725-7.6%¥46M ($295K)
2022-09-20SELLunknown
松井証券株式会社
Matsui Securities Co.,Ltd
other0¥1,045+25.4%¥528M ($3.4M)
2022-08-03BUYunknown
松井証券株式会社
Matsui Securities Co.,Ltd
other505.5K¥1,027-24.1%¥519M ($3.3M)
2022-06-02SELLunknown
松井証券株式会社
Matsui Securities Co.,Ltd
other0¥1,148+32.1%¥565M ($3.6M)
2022-05-09BUYunknown
松井証券株式会社
Matsui Securities Co.,Ltd
other492.2K¥1,155-32.5%¥568M ($3.7M)
2022-03-18BUYMarket Buy
箕浦 幹彦
MIKIHIKO MINOURA
passive747.7K¥1,069-27.0%¥57M ($366K)
2022-03-18BUYMarket Buy
箕浦 幹彦
MIKIHIKO MINOURA
passive747.7K¥1,069-27.0%¥57M ($366K)
2021-06-10BUYMarket Buy
箕浦 幹彦
MIKIHIKO MINOURA
passive347.3K¥1,211-35.6%¥32M ($209K)

Frequently asked questions

Who has been buying Mitsuchi Corporation stock?
4 distinct investors have filed 4 disclosed large-shareholding filings in Mitsuchi Corporation (3439), most recently on 2026-03-18. 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 Mitsuchi Corporation have?
Mitsuchi Corporation has 4 buy-side and 8 sell-side disclosures on record, covering ¥576M ($3.7M) in total reported value, spanning 2021-06-10 to 2026-03-18.
Where does StockDrifts get Mitsuchi Corporation 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 Mitsuchi Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.