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Tsuchiya Holdings Co., Ltd. 1840

Company
株式会社土屋ホールディングスTsuchiya Holdings Co., Ltd.
Investors
7
Buys
7
Total Value
¥1.1B ($7.3M)
Avg Return
+15.60%
Last Filing
2026-03-27

Tsuchiya Holdings Co., Ltd. (1840) has 7 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥1.1B ($7.3M) in reported transaction value. The earliest filing StockDrifts holds for Tsuchiya Holdings Co., Ltd. is dated 2022-03-11; the most recent is 2026-03-27. 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 +15.60%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-03-27BUYunknown
土屋 みどり
activist10.0K¥234+0.4%¥2M ($15K)
2026-03-27BUYunknown
株式会社土屋総合研究所
strategic3.4M¥234+0.4%¥801M ($5.2M)
2026-03-27BUYunknown
株式会社土屋経営
activist2.8M¥234+0.4%¥645M ($4.2M)
2026-03-27BUYunknown
土屋 昌三
activist870.9K¥234+0.4%¥203M ($1.3M)
2025-04-03BUYunknown
積水ハウス株式会社
Sekisui House, Ltd.
strategic1.6M¥226+3.1%¥358M ($2.3M)
2022-10-11BUYunknown
株式会社土屋総合研究所
Tsuchiya Research Institute Co., Ltd.
strategic3.4M¥198+17.7%¥681M ($4.4M)
2022-10-11BUYunknown
株式会社土屋経営
Tsuchiya Management Co., Ltd.
activist2.8M¥198+17.7%¥548M ($3.5M)
2022-10-11BUYunknown
株式会社土屋総合研究所
Tsuchiya Research Institute Co., Ltd.
strategic3.4M¥198+17.7%¥681M ($4.4M)
2022-10-11BUYunknown
株式会社土屋経営
Tsuchiya Management Co., Ltd.
activist2.8M¥198+17.7%¥548M ($3.5M)
2022-10-11BUYunknown
土屋 昌三
tsuchiya syouzou
activist482.1K¥198+17.7%¥95M ($616K)
2022-10-11BUYunknown
土屋 昌三
tsuchiya syouzou
activist482.1K¥198+17.7%¥95M ($616K)
2022-03-11BUYunknown
株式会社土屋総合研究所
Tsuchiya Research Institute Co., Ltd.
strategic3.4M¥175+33.1%¥602M ($3.9M)
2022-03-11BUYunknown
土屋 博子
Hiroko Tsuchiya
strategic738.8K¥175+33.1%¥129M ($834K)
2022-03-11BUYunknown
株式会社土屋経営
Tsuchiya Management Co., Ltd.
strategic2.8M¥175+33.1%¥484M ($3.1M)
2022-03-11SELLunknown
土屋 公三
Tsuchiya Kouzou
strategic757.8K¥175-33.1%¥2M ($15K)

Frequently asked questions

Who has been buying Tsuchiya Holdings Co., Ltd. stock?
7 distinct investors have filed 7 disclosed large-shareholding filings in Tsuchiya Holdings Co., Ltd. (1840), most recently on 2026-03-27. 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 Tsuchiya Holdings Co., Ltd. have?
Tsuchiya Holdings Co., Ltd. has 7 buy-side and 1 sell-side disclosures on record, covering ¥1.1B ($7.3M) in total reported value, spanning 2022-03-11 to 2026-03-27.
Where does StockDrifts get Tsuchiya Holdings 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 Tsuchiya Holdings Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.