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TOKYO KOATSU Co., Ltd. 7139

Company
東京高圧山崎株式会社TOKYO KOATSU Co., Ltd.
Investors
6
Buys
9
Total Value
¥1.6B ($10.5M)
Avg Return
+4.65%
Last Filing
2025-01-30

TOKYO KOATSU Co., Ltd. (7139) has 9 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.6B ($10.5M) in reported transaction value. The earliest filing StockDrifts holds for TOKYO KOATSU Co., Ltd. is dated 2022-04-20; the most recent is 2025-01-30. 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 +4.65%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-01-30SELLMarket Buy
東京マイビス株式会社
Tokyo Mybis Co., Ltd.
other0¥4,640-1.3%¥59M ($380K)
2025-01-30BUYMarket Buy
前田 浩正
HIROMASA MAEDA
passive72.9K¥4,640+1.3%¥59M ($380K)
2022-07-20SELLunknown
昭和電工株式会社
Showa Denko K.K.
unknown0¥4,532.034-3.7%¥284M ($1.8M)
2022-07-20BUYnegotiated
昭和電工ガスプロダクツ株式会社
SHOWA DENKO GAS PRODUCTS CO., LTD.
strategic62.6K¥4,532.034+3.7%¥284M ($1.8M)
2022-04-22BUYMarket Buy
東京マイビス株式会社
Tokyo Mybis Co., Ltd.
other12.7K¥4,464.536+5.3%¥57M ($365K)
2022-04-22BUYMarket Buy
東京マイビス株式会社
Tokyo Mybis Co., Ltd.
other12.7K¥4,464.536+5.3%¥57M ($365K)
2022-04-22BUYMarket Buy
前田 浩正
HIROMASA MAEDA
passive60.2K¥4,464.536+5.3%¥269M ($1.7M)
2022-04-22BUYMarket Buy
前田 浩正
HIROMASA MAEDA
passive60.2K¥4,464.536+5.3%¥269M ($1.7M)
2022-04-20BUYnegotiated
昭和電工株式会社
Showa Denko K.K.
strategic62.6K¥4,464.536+5.3%¥279M ($1.8M)
2022-04-20BUYnegotiated
大陽日酸株式会社
TAIYO NIPPON SANSO CORPORATION
strategic78.9K¥4,464.536+5.3%¥352M ($2.3M)
2022-04-20BUYunknown
日清紡ホールディングス株式会社
Nisshinbo Holdings Inc.
strategic27.0K¥4,464.536+5.3%¥121M ($778K)
2022-04-20BUYnegotiated
大陽日酸株式会社
TAIYO NIPPON SANSO CORPORATION
strategic78.9K¥4,464.536+5.3%¥352M ($2.3M)

Frequently asked questions

Who has been buying TOKYO KOATSU Co., Ltd. stock?
6 distinct investors have filed 9 disclosed large-shareholding filings in TOKYO KOATSU Co., Ltd. (7139), most recently on 2025-01-30. 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 TOKYO KOATSU Co., Ltd. have?
TOKYO KOATSU Co., Ltd. has 9 buy-side and 2 sell-side disclosures on record, covering ¥1.6B ($10.5M) in total reported value, spanning 2022-04-20 to 2025-01-30.
Where does StockDrifts get TOKYO KOATSU 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 TOKYO KOATSU Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.