Who has been buying Tsukamoto Corporation Co., Ltd. stock?

10 distinct investors have filed 18 disclosed large-shareholding filings in Tsukamoto Corporation Co., Ltd. (8025), most recently on 2025-05-30. 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 Tsukamoto Corporation Co., Ltd. have?

Tsukamoto Corporation Co., Ltd. has 18 buy-side and 12 sell-side disclosures on record, covering ¥594M ($3.8M) in total reported value, spanning 2021-03-22 to 2025-05-30.

Where does StockDrifts get Tsukamoto Corporation 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.

Tsukamoto Corporation Co., Ltd. 8025

Company

株式会社ツカモトコーポレーションTsukamoto Corporation Co., Ltd.

Investors

Buys

Total Value

¥594M ($3.8M)

Avg Return

+1.46%

Last Filing

2025-05-30

Tsukamoto Corporation Co., Ltd. (8025) has 18 disclosed large-shareholding filings and 12 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥594M ($3.8M) in reported transaction value. The earliest filing StockDrifts holds for Tsukamoto Corporation Co., Ltd. is dated 2021-03-22; the most recent is 2025-05-30. 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 +1.46%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2025-05-30	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	705.1K	¥1,231	+2.8%	¥53M ($339K)
2025-02-18	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	5.9K	¥1,133	+11.7%	¥7M ($43K)
2025-02-18	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	unknown	0	¥1,133	-11.7%	¥6M ($39K)
2025-02-18	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	strategic	100.9K	¥1,133	-11.7%	¥26M ($170K)
2025-02-18	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	170.8K	¥1,133	+11.7%	¥194M ($1.2M)
2025-01-17	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	662.5K	¥1,065	+18.8%	¥8M ($53K)
2024-11-29	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	655.0K	¥1,088	+16.3%	¥44M ($286K)
2024-08-06	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	614.3K	¥1,195	+5.9%	¥51M ($326K)
2024-07-29	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	5.9K	¥1,256	+0.7%	¥7M ($48K)
2024-07-29	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	5.4K	¥1,256	-0.7%	¥12M ($76K)
2024-07-29	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	124.2K	¥1,256	-0.7%	¥20M ($129K)
2024-07-29	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	170.8K	¥1,256	+0.7%	¥215M ($1.4M)
2024-04-18	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	571.6K	¥1,232	+2.7%	¥51M ($327K)
2023-11-16	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	530.6K	¥1,162	+8.9%	¥49M ($314K)
2023-06-12	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	488.8K	¥1,326	-4.6%	¥54M ($348K)
2023-05-01	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	5.9K	¥1,558	-18.8%	¥9M ($59K)
2023-05-01	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	1.7K	¥1,558	-18.8%	¥166M ($1.1M)
2023-05-01	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	14.8K	¥1,558	-18.8%	¥23M ($149K)
2023-05-01	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	139.8K	¥1,558	+18.8%	¥1M ($8K)
2023-05-01	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	170.8K	¥1,558	-18.8%	¥266M ($1.7M)
2023-03-20	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	56.2K	¥1,420	-10.9%	¥69M ($447K)
2023-03-20	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	170.8K	¥1,420	-10.9%	¥243M ($1.6M)
2023-03-20	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	5.9K	¥1,420	-10.9%	¥8M ($54K)
2023-03-20	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	14.8K	¥1,420	+10.9%	¥3M ($22K)
2023-03-20	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	140.9K	¥1,420	+10.9%	¥40M ($257K)
2022-09-28	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	448.1K	¥1,105	+14.5%	¥51M ($331K)
2022-08-23	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	401.5K	¥1,037	+22.0%	¥44M ($283K)
2022-08-05	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	58.2K	¥1,051	-20.4%	¥44M ($284K)
2022-08-05	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	113.0K	¥1,051	+20.4%	¥119M ($766K)
2022-07-13	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	359.3K	¥1,109	+14.1%	¥46M ($294K)
2022-05-11	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	116.1K	¥1,206	+4.9%	¥140M ($904K)
2022-05-11	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	40.7K	¥1,206	-4.9%	¥78M ($500K)
2022-02-07	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	116.1K	¥1,308	-3.3%	¥152M ($980K)
2022-02-07	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	104.9K	¥1,308	-3.3%	¥137M ($885K)
2021-05-12	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	116.1K	¥1,353	-6.5%	¥157M ($1.0M)
2021-05-12	BUY	Market Buy	フリージア・マクロス株式会社 FREESIA MACROSS CORPORATION	passive	318.2K	¥1,353	-6.5%	¥35M ($227K)
2021-05-12	SELL	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	3.9K	¥1,353	+6.5%	¥143M ($920K)
2021-04-12	BUY	negotiated	三菱UFJニコス株式会社 Mitsubishi UFJ Nicos Co., Ltd.	strategic	5.9K	¥1,454	-13.0%	¥9M ($55K)
2021-04-12	SELL	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	7.3K	¥1,454	+13.0%	¥68M ($439K)
2021-04-12	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	17.0K	¥1,454	-13.0%	¥592K ($4K)
2021-04-12	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	168.9K	¥1,454	+13.0%	¥4M ($23K)
2021-04-12	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	170.8K	¥1,454	-13.0%	¥248M ($1.6M)
2021-03-22	BUY	unknown	株式会社三井住友銀行 Sumitomo Mitsui Banking Corporation	other	116.1K	¥1,398.164	-9.5%	¥162M ($1.0M)
2021-03-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	109.5K	¥1,398.164	-9.5%	¥153M ($988K)

Frequently asked questions

Who has been buying Tsukamoto Corporation Co., Ltd. stock?: 10 distinct investors have filed 18 disclosed large-shareholding filings in Tsukamoto Corporation Co., Ltd. (8025), most recently on 2025-05-30. 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 Tsukamoto Corporation Co., Ltd. have?: Tsukamoto Corporation Co., Ltd. has 18 buy-side and 12 sell-side disclosures on record, covering ¥594M ($3.8M) in total reported value, spanning 2021-03-22 to 2025-05-30.
Where does StockDrifts get Tsukamoto Corporation 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 Tsukamoto Corporation Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.